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1

Co-coking of Hydrotreated Decant Oil/Coal Blends: Effect of Hydrotreatment Severity on the Yield Distribution and Quality of Distillate Fuels  

Science Journals Connector (OSTI)

The coke yield from delayed co-coking of hydrotreated DOs and coal blends was observed to be in the range of 15.9–24.4%. ... The coal used in this study (EI-106) was a 50:50 blend of the Powellton and Eagle seams, both very similar coals of high-volatile A bituminous rank from West Virginia. ... One of the hydrotreated DOs (EI-133) was coked alone. ...

Ömer Gül; Leslie R. Rudnick; Harold H. Schobert

2013-05-19T23:59:59.000Z

2

Features of hydrotreating catalytic cracking feed and heavy slow coking gas oils  

SciTech Connect

A possible means of more extensive processing of crude oil is the use, in catalytic cracking, of heavy coking gas oils (HCGOs), a feature of which is a higher content of polycyclic aromatic compounds and resins by comparison with straight-run vacuum distillates. The presence of these compounds in catalytic cracking feed causes a reduction in the product yield and increased coke formation. Therefore, one of the problems of hydrotreating feedstock of this kind is the hydrogenation of polycyclic arenes. Processes of extensive desulphurization and denitration occur in parallel, since the sulphur and nitrogen compounds of HCGO are chiefly condensed benzoderivatives of thiophene, pyridine and carbazole, and largely concentrated in heavy aromatic and resinous fractions. The composition of the saturated part of the cracking feed plays a large role in achieving the optimum yields of gaseous and gasoline fractions. Thus an increase in the proportion of cyclanes in the feed raises the gasoline yield. In this way, an investigation of the hydrocarbon conversions during the hydrotreatment of cracking feed is of great importance. The present paper sets out the results for studying the change in the group-structural characteristics of the hydrogenation products of a mixture containing 30% HCGOs according to data of {sup 1}H and {sup 13}C NMR spectroscopy. 7 refs., 7 figs., 1 tab.

Yefremov, N.I.; Kushnarev, D.F.; Frolov, P.A.; Chagovets, A.N.; Kalabin, G.A.

1993-12-31T23:59:59.000Z

3

Preparation and evaluation of hydrotreating catalysts based on activated carbon derived from oil sand petroleum coke  

Science Journals Connector (OSTI)

Novel Ni–Mo/activated carbon (AC) hydrotreating catalysts were prepared and evaluated for upgrading heavy vacuum gas oil (HVGO). The AC supports were derived from Alberta oil sand petroleum coke, i.e. fluid coke and/or delayed coke, hereafter referred to as OSP coke, through a chemical process. The BET surface area was as high as 2194 m2/g for the fluid coke derived AC and 2357 m2/g for the delayed coke derived AC. Both \\{ACs\\} contained a large number of micropores with pore volume as high as 1.2 cm3/g. Ni and Mo based active component precursors could be easily loaded on the activated carbon supports by chemical impregnation of nickel nitrate and ammonium molybdate followed by calcination in nitrogen at 773 K without further modification or oxidation treatment to the activated carbons. Scanning electron microscopy (SEM) observation showed highly porous surface structure of the bare activated carbon supports and well dispersed metal (oxide) precursor nanoparticles of 30–50 nm loaded on the AC supports. For comparison, two reference catalysts were also prepared by the same procedure but using commercial activated carbon and porous alumina as supports. After catalyst activation by sulfiding, the hydrotreating performance of the prepared catalysts was evaluated in a magnetically stirred autoclave with a HVGO feedstock to examine their hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) activities. Two commercial hydrotreating catalysts were also tested and compared under similar conditions with the same feed. The results showed that the catalysts based on the activated carbon supports prepared from OSP coke had better hydrotreating performance than the other catalysts. Scanning transmission electron microscopy (STEM) characterization of the catalysts after activation showed that small particles of nanostructure (2–5 nm in size) were evenly embedded in the carbon matrix except for some bigger particles that were located on the catalyst surface. Energy dispersive X-ray (EDX) spectroscopy revealed that these particles were composed of Ni, Mo and S elements. The dispersed nanoparticles formed the active sites and were responsible for the observed high HDS and HDN activity. Elemental analysis and surface characterization of the spent catalysts showed that the formation of coke precursors was favored on the alumina supported catalyst, which resulted in catalyst deactivation.

Yu Shi; Jinwen Chen; Jian Chen; Robb A. Macleod; Marek Malac

2012-01-01T23:59:59.000Z

4

Extended end-point distillate fuels from shale oil by hydrotreating coupled with catalytic dewaxing  

SciTech Connect

It is generally accepted that shale oils derived by either surface or in situ retorting of western oil shale require relatively severe hydrotreatment as a consequence of their high oxygen, nitrogen and olefin contents. However, the hydrotreated syn crudes so produced typically possess pour points on the order of 20-30/sup 0/C which may require transport in heated pipelines. In addition distillates derived from the hydrotreated shale oil may also be unacceptable as jet and diesel fuels as a consequence of their poor low temperature fluidity characteristics. The authors report here a relatively simple process modification which overcomes these problems, i.e., addition of a shape-selective ZSM-5 dewaxing reactor in series with the conventional hydrotreating reactor. This process scheme is shown to be operative without interstage separation of light products from the hydrotreater including ammonia. Processing conditions for the dewaxing reactor are compatible with those of the hydrotreater. Surprisingly low levels of zeolite acidity are required for substantial pour point reduction. As a result of such processing, naphthas with octanes higher than those typically obtained by hydrocracking are produced in addition to a high yield of extended end point distillate which meets essentially all requirements for acceptable diesel fuel.

LaPierre, R.B.; Gorring, R.L.; Smith, R.L.

1986-03-01T23:59:59.000Z

5

Characteristics of a commercially aged Ni-Mo/Al2O3 hydrotreating catalyst: component distribution, nature of coke and effects of regeneration  

SciTech Connect

Information concerning the morphology and behavior of active components on commercially aged catalyst, the effects of regeneration conditions on activity, and insights into the nature of coke and contaminant metal deposits could lead to improved catalysts and operating conditions , yielding significant economic returns. Spent Ni-Mo/Al2O3 hydrotreating catalyst from a commercial hydrotreater was examined using TGA, SEM, STEM, XPS, and a microreactor. Information concerning intraparticle distributions of active components, characteristics of the coke and metal deposits, and catalytic activity for fresh, spent and regenerated catalyst was used to draw general conclusions concerning hydrotreating catalyst deactivation. It was found that catalytic activity was reduced and the nature of the hydrogenation function was altered due to bulk migration and agglomeration of molybdenum. This process was found to be accelerated by high-temperature regeneration. Results also indicated that iron deposits might catalyze formation of coke. Tentative generalizations and suggestions on improved reactor operation are presented.

Bogdanor, J.M.

1984-01-01T23:59:59.000Z

6

Atmospheric Crude Oil Distillation Operable Capacity  

Gasoline and Diesel Fuel Update (EIA)

(Barrels per Calendar Day) (Barrels per Calendar Day) Data Series: Total Number of Operable Refineries Number of Operating Refineries Number of Idle Refineries Atmospheric Crude Oil Distillation Operable Capacity (B/CD) Atmospheric Crude Oil Distillation Operating Capacity (B/CD) Atmospheric Crude Oil Distillation Idle Capacity (B/CD) Atmospheric Crude Oil Distillation Operable Capacity (B/SD) Atmospheric Crude Oil Distillation Operating Capacity (B/SD) Atmospheric Crude Oil Distillation Idle Capacity (B/SD) Vacuum Distillation Downstream Charge Capacity (B/SD) Thermal Cracking Downstream Charge Capacity (B/SD) Thermal Cracking Total Coking Downstream Charge Capacity (B/SD) Thermal Cracking Delayed Coking Downstream Charge Capacity (B/SD Thermal Cracking Fluid Coking Downstream Charge Capacity (B/SD) Thermal Cracking Visbreaking Downstream Charge Capacity (B/SD) Thermal Cracking Other/Gas Oil Charge Capacity (B/SD) Catalytic Cracking Fresh Feed Charge Capacity (B/SD) Catalytic Cracking Recycle Charge Capacity (B/SD) Catalytic Hydro-Cracking Charge Capacity (B/SD) Catalytic Hydro-Cracking Distillate Charge Capacity (B/SD) Catalytic Hydro-Cracking Gas Oil Charge Capacity (B/SD) Catalytic Hydro-Cracking Residual Charge Capacity (B/SD) Catalytic Reforming Charge Capacity (B/SD) Catalytic Reforming Low Pressure Charge Capacity (B/SD) Catalytic Reforming High Pressure Charge Capacity (B/SD) Catalytic Hydrotreating/Desulfurization Charge Capacity (B/SD) Catalytic Hydrotreating Naphtha/Reformer Feed Charge Cap (B/SD) Catalytic Hydrotreating Gasoline Charge Capacity (B/SD) Catalytic Hydrotreating Heavy Gas Oil Charge Capacity (B/SD) Catalytic Hydrotreating Distillate Charge Capacity (B/SD) Catalytic Hydrotreating Kerosene/Jet Fuel Charge Capacity (B/SD) Catalytic Hydrotreating Diesel Fuel Charge Capacity (B/SD) Catalytic Hydrotreating Other Distillate Charge Capacity (B/SD) Catalytic Hydrotreating Residual/Other Charge Capacity (B/SD) Catalytic Hydrotreating Residual Charge Capacity (B/SD) Catalytic Hydrotreating Other Oils Charge Capacity (B/SD) Fuels Solvent Deasphalting Charge Capacity (B/SD) Catalytic Reforming Downstream Charge Capacity (B/CD) Total Coking Downstream Charge Capacity (B/CD) Catalytic Cracking Fresh Feed Downstream Charge Capacity (B/CD) Catalytic Hydro-Cracking Downstream Charge Capacity (B/CD) Period:

7

Dale Coke: Coke Farm  

E-Print Network (OSTI)

Dale Coke Photo by Benjamin J. Myers.2009. Coke FarmDale Coke grew up on an apricot orchard in California’s

Farmer, Ellen

2010-01-01T23:59:59.000Z

8

Distillation  

Science Journals Connector (OSTI)

A critical review on new developments in desalination by distillation processes, with the multistage flash evaporation process as the reference, was presented by Veenman. These developments refer to vertical t...

Prof. Dr. Anthony Delyannis; Dr. Euridike-Emmy Delyannis

1980-01-01T23:59:59.000Z

9

Integrated design of diesel hydrotreating processes  

Science Journals Connector (OSTI)

This work presents an integrated approach for the design of diesel hydrotreating processes employing a simulated annealing optimisation algorithm. The modelling of reactor, separation and heat recovery system for diesel hydrotreating processes is discussed, and a novel optimisation framework is developed for the design of complex refinery processes. A comparison with conventional approach to process design, i.e. sequential evolution of design, is given to illustrate the ability of proposed approach to obtain overall hydrotreating process designs with minimum total annualised costs. The proposed integrated approach takes into account the trade-offs between capital and operating costs, as well as interactions between the hydrotreater, distillation column, and the associated heat exchanger network.

Muhammad Imran Ahmad; Nan Zhang; Megan Jobson

2011-01-01T23:59:59.000Z

10

Hydrotreating of coal-derived liquids  

SciTech Connect

The objective of Sandia`s refining of coal-derived liquids project is to determine the relationship between hydrotreating conditions and Product characteristics. The coal-derived liquids used in this work were produced In HTI`s first proof-of-concept run using Illinois No. 8 coal. Samples of the whole coal liquid product, distillate fractions of this liquid, and Criterion HDN-60 catalyst were obtained from Southwest Research Inc. Hydrotreating experiments were performed using a continuous operation, unattended, microflow reactor system. A factorial experimental design with three variables (temperature, (310{degrees}C to 388{degrees}C), liquid hourly space velocity (1 to 3 g/h/cm{sup 3}(cat)), pressure (500 to 1000 psig H{sub 2}) is being used in this project. Sulfur and nitrogen contents of the hydrotreated products were monitored during the hydrotreating experiments to ensure that activity was lined out at each set of reaction conditions. Results of hydrotreating the whole coal liquid showed that nitrogen values in the products ranged from 549 ppM at 320{degrees}C, 3 g/h/cm{sup 3}(cat), 500 psig H{sub 2} to <15 ppM at 400{degrees}C, 1 g/h/ cm{sup 3}(cat), 1000 psig H{sub 2}.

Stohl, F.V.; Lott, S.E.; Diegert, K.V.; Goodnow, D.C.; Oelfke, J.B.

1995-06-01T23:59:59.000Z

11

coking coal  

Science Journals Connector (OSTI)

coking coal [A caking coal suitable for the production of coke for metallurgical use] ? Kokskohle f, verkokbare Kohle

2014-08-01T23:59:59.000Z

12

High coking value pitch  

SciTech Connect

A high coking value pitch prepared from coal tar distillate and has a low softening point and a high carbon value while containing substantially no quinoline insolubles is disclosed. The pitch can be used as an impregnant or binder for producing carbon and graphite articles.

Miller, Douglas J.; Chang, Ching-Feng; Lewis, Irwin C.; Lewis, Richard T.

2014-06-10T23:59:59.000Z

13

12.2 Coke Production 12.2.1 General  

E-Print Network (OSTI)

Metallurgical coke is produced by the destructive distillation of coal in coke ovens. Prepared coal is heated in an oxygen-free atmosphere (–coked–) until most volatile components in the coal are removed. The material remaining is a carbon mass called coke. Metallurgical coke is used in iron and steel industry processes (primarily in blast furnaces) to reduce iron ore to iron. Over 90 percent of the total coke production is dedicated to blast furnace operations. Foundry coke comprises most of the balance and is used by foundries in furnaces for melting metal and in the preparation of molds. Foundry coke production uses a different blend of coking coals, longer coking times, and lower coking temperatures relative to those used for metallurgical coke. Most coke plants are collocated with iron and steel production facilities, and the demand for coke generally corresponds with the production of iron and steel. There has been a steady decline in the number of coke plants over the past several years for many reasons, including a decline in the demand for iron/steel, increased production of steel by mini-mills (electric arc furnaces that do not use coke), and the lowering of the coke:iron ratio used in the blast furnace (e. g., increased use of pulverized coal injection). There were 18 coke plants operating in the U. S. in 2007.

unknown authors

14

Delayed coking of decant oil and coal in a laboratory-scale coking unit  

SciTech Connect

In this paper, we describe the development of a laboratory-scale delayed coker and present results of an investigation on the recovered liquid from the coking of decant oil and decant oil/coal mixtures. Using quantitative gas chromatography/mass spectroscopy (GC/MS) and {sup 1}H and {sup 13}C NMR, a study was made of the chemical composition of the distillate liquids isolated from the overheads collected during the coking and co-coking process. {sup 1}H and {sup 13}C NMR analyses of combined liquids from coking and co-coking did not show any substantial differences. These NMR results of coking and co-coking liquids agree with those of GC/MS. In these studies, it was observed that co-coking with coal resulted in a decrease in the paraffins contents of the liquid. The percentage of cycloparaffins, indenes, naphthalenes, and tetralins did not change significantly. In contrast, alkyl benzenes and polycyclic aromatic hydrocarbons in the distillate were higher in the co-coking experiments which may have resulted from the distillation of thermally cracked coal macromolecules and the contribution of these molecules to the overall liquid composition. 40 refs., 3 figs., 13 tabs.

Oemer Guel; Leslie R. Rudnick; Harold H. Schobert [Pennsylvania State University Park, PA (United States). Energy Institute, C205 Coal Utilization Laboratory

2006-08-15T23:59:59.000Z

15

,,"Distillate Fuel Oil(b)",,,"Alternative Energy Sources(c)"  

U.S. Energy Information Administration (EIA) Indexed Site

Standard Errors for Table 10.9;" " Unit: Percents." ,,"Distillate Fuel Oil(b)",,,"Alternative Energy Sources(c)" ,,,"Coal Coke" "NAICS"," ","Total","...

16

,,"Distillate Fuel Oil",,,"Alternative Energy Sources(b)"  

U.S. Energy Information Administration (EIA) Indexed Site

8 Relative Standard Errors for Table 10.8;" " Unit: Percents." ,,"Distillate Fuel Oil",,,"Alternative Energy Sources(b)" ,,,"Coal Coke" "NAICS"," ","Total","...

17

Fundamentals of Delayed Coking Joint Industry Project  

SciTech Connect

The coking test facilities include three reactors (or cokers) and ten utilities. Experiments were conducted using the micro-coker, pilot-coker, and stirred-batch coker. Gas products were analyzed using an on-line gas chromatograph. Liquid properties were analyzed in-house using simulated distillation (HP 5880a), high temperature gas chromatography (6890a), detailed hydrocarbon analysis, and ASTM fractionation. Coke analyses as well as feedstock analyses and some additional liquid analyses (including elemental analyses) were done off-site.

Volk Jr., Michael; Wisecarver, Keith D.; Sheppard, Charles M.

2003-02-07T23:59:59.000Z

18

Chemicals from Coal Coking  

Science Journals Connector (OSTI)

Chemicals from Coal Coking ... Since 2009, she has been at INCAR-CSIC, researching the preparation and characterization of carbon materials (cokes and fibers) and nanomaterials (nanotubes and graphenes) and their catalytic, environmental, and energy applications. ... He then joined the Fundamental Studies Section of the British Coke (later Carbonization) Research Association, eventually becoming Head of Fundamental Studies. ...

Marcos Granda; Clara Blanco; Patricia Alvarez; John W. Patrick; Rosa Menéndez

2013-09-30T23:59:59.000Z

19

Hydrotreating of oil from eastern oil shale  

SciTech Connect

Oil shale provides one of the major fossil energy reserves for the United States. The quantity of reserves in oil shale is less than the quantity in coal, but is much greater (by at least an order of magnitude) than the quantity of crude oil reserves. With so much oil potentially available from oil shale, efforts have been made to develop techniques for its utilization. In these efforts, hydrotreating has proved to be an acceptable technique for upgrading raw shale oil to make usuable products. The present work demonstrated the use of the hydrotreating technique for upgrading an oil from Indiana New Albany oil shale.

Scinta, J.; Garner, J.W.

1984-01-01T23:59:59.000Z

20

Fundamentals of Delayed Coking Joint Industry Project  

SciTech Connect

Delayed coking evolved steadily over the early to mid 1900s to enable refiners to convert high boiling, residual petroleum fractions to light products such as gasoline. Pound for pound, coking is the most energy intensive of any operation in a modern refinery. Large amounts of energy are required to heat the thick, poor-quality petroleum residuum to the 900 to 950 degrees F required to crack the heavy hydrocarbon molecules into lighter, more valuable products. One common misconception of delayed coking is that the product coke is a disadvantage. Although coke is a low valued (near zero economic value) byproduct, compared to transportation fuels, there is a significant worldwide trade and demand for coke as it is an economical fuel. Coke production has increased steadily over the last ten years, with further increases forecast for the foreseeable future. Current domestic production is near 111,000 tons per day. A major driving force behind this increase is the steady decline in crude quality available to refiners. Crude slates are expected to grow heavier with higher sulfur contents while environmental restrictions are expected to significantly reduce the demand for high-sulfur residual fuel oil. Light sweet crudes will continue to be available and in even greater demand than they are today. Refiners will be faced with the choice of purchasing light sweet crudes at a premium price, or adding bottom of the barrel upgrading capability, through additional new investments, to reduce the production of high-sulfur residual fuel oil and increase the production of low-sulfur distillate fuels. A second disadvantage is that liquid products from cokers frequently are unstable, i.e., they rapidly form gum and sediments. Because of intermediate investment and operating costs, delayed coking has increased in popularity among refiners worldwide. Based on the 2000 Worldwide Refining Survey published in the Oil and Gas, the delayed coking capacity for 101 refineries around the world is 2,937,439 barrels/calendar day. These cokers produce 154,607 tons of coke per day and delayed coking accounts for 88% of the world capacity. The delayed coking charge capacity in the United States is 1,787,860 b/cd. Despite its wide commercial use, only relatively few contractors and refiners are truly knowledgeable in delayed-coking design, so that this process carries with it a ''black art'' connotation. Until recently, the expected yield from cokers was determined by a simple laboratory test on the feedstock. As a result of Tulsa University's prior related research, a process model was developed that with additional work could be used to optimize existing delayed cokers over a wide range of potential feedstocks and operating conditions. The objectives of this research program are to: utilize the current micro, batch and pilot unit facilities at The University of Tulsa to enhance the understanding of the coking process; conduct additional micro and pilot unit tests with new and in-house resids and recycles to make current optimization models more robust; conduct focused kinetic experiments to enhance the furnace tube model and to enhance liquid production while minimizing sulfur in the products; conduct detailed foaming studies to optimize the process and minimize process upsets; quantify the parameters that affect coke morphology; and to utilize the knowledge gained from the experimental and modeling studies to enhance the computer programs developed in the previous JIP for optimization of the coking process. These refined computer models will then be tested against refinery data provided by the member companies. Novel concepts will also be explored for hydrogen sulfide removal of furnace gases as well as gas injection studies to reduce over-cracking.

Michael Volk; Keith Wisecarver

2004-09-26T23:59:59.000Z

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Fundamentals of Delayed Coking Joint Industry Project  

SciTech Connect

Delayed coking evolved steadily over the early to mid 1900s to enable refiners to convert high boiling, residual petroleum fractions to light products such as gasoline. Pound for pound, coking is the most energy intensive of any operation in a modern refinery. Large amounts of energy are required to heat the thick, poor-quality petroleum residuum to the 900 to 950 degrees F required to crack the heavy hydrocarbon molecules into lighter, more valuable products. One common misconception of delayed coking is that the product coke is a disadvantage. Although coke is a low valued (near zero economic value) byproduct, compared to transportation fuels, there is a significant worldwide trade and demand for coke as it is an economical fuel. Coke production has increased steadily over the last ten years, with further increases forecast for the foreseeable future. Current domestic production is near 111,000 tons per day. A major driving force behind this increase is the steady decline in crude quality available to refiners. Crude slates are expected to grow heavier with higher sulfur contents while environmental restrictions are expected to significantly reduce the demand for high-sulfur residual fuel oil. Light sweet crudes will continue to be available and in even greater demand than they are today. Refiners will be faced with the choice of purchasing light sweet crudes at a premium price, or adding bottom of the barrel upgrading capability, through additional new investments, to reduce the production of high-sulfur residual fuel oil and increase the production of low-sulfur distillate fuels. A second disadvantage is that liquid products from cokers frequently are unstable, i.e., they rapidly form gum and sediments. Because of intermediate investment and operating costs, delayed coking has increased in popularity among refiners worldwide. Based on the 2000 Worldwide Refining Survey published in the Oil and Gas, the delayed coking capacity for 101 refineries around the world is 2,937,439 barrels/calendar day. These cokers produce 154,607 tons of coke per day and delayed coking accounts for 88% of the world capacity. The delayed coking charge capacity in the United States is 1,787,860 b/cd. Despite its wide commercial use, only relatively few contractors and refiners are truly knowledgeable in delayed-coking design, so that this process carries with it a ''black art'' connotation. Until recently, the expected yield from cokers was determined by a simple laboratory test on the feedstock. As a result of Tulsa University's prior related research, a process model was developed that with additional work could be used to optimize existing delayed cokers over a wide range of potential feedstocks and operating conditions. The objectives of this research program are to: utilize the current micro, batch and pilot unit facilities at The University of Tulsa to enhance the understanding of the coking process; conduct additional micro and pilot unit tests with new and in-house resids and recycles to make current optimization models more robust; conduct focused kinetic experiments to enhance the furnace tube model and to enhance liquid production while minimizing sulfur in the products; conduct detailed foaming studies to optimize the process and minimize process upsets; quantify the parameters that affect coke morphology; and to utilize the knowledge gained from the experimental and modeling studies to enhance the computer programs developed in the previous JIP for optimization of the coking process. These refined computer models will then be tested against refinery data provided by the member companies. Novel concepts will also be explored for hydrogen sulfide removal of furnace gases as well as gas injection studies to reduce over-cracking.

Michael Volk; Keith Wisecarver

2003-09-26T23:59:59.000Z

22

Regeneration of Hydrotreating and FCC Catalysts  

SciTech Connect

Hydrotreating, hydrocracking, and fluid catalytic cracking (FCC) catalysts are important components of petroleum refining processes. Hydrotreating and hydrocracking catalysts are used to improve the yield of high-quality light oil fractions from heavier crude oil and petroleum feedstocks containing high levels of impurities. FCC catalysts improve the yield of higher octane gasoline from crude oil. Residuum hydrotreating and cracking catalysts are susceptible to irreversible deactivation caused by adsorption of sulfur and by metals impurities, such as vanadium and nickel. The gradual buildup of these impurities in a hydrotreating catalyst eventually plugs the pores and deactivates it. Nickel and vanadium adversely affect the behavior of cracking catalysts, reducing product yield and quality. Replacing deactivated catalysts represents a significant cost in petroleum refining. Equally important are the costs and potential liabilities associated with treating and disposing spent catalysts. For example, recent US Environmental Protection Agency rulings have listed spent hydrotreating and hydrorefining catalysts as hazardous wastes. FCC catalysts, though more easily disposed of as road-base or as filler in asphalt and cement, are still an economic concern mainly because of the large volumes of spent catalysts generated. New processes are being considered to increase the useful life of catalysts or for meeting more stringent disposal requirements for spent catalysts containing metals. This report discusses a collaborative effort between Pacific Northwest National Laboratory (PNNL) and Phillips Petroleum, Inc., to identify promising chemical processes for removing metals adhered to spent hydrodesulfurization (HDS, a type of hydrotreating catalyst) and FCC catalysts. This study, conducted by PNNL, was funded by the US Department of Energy's Bartlesville Project Office. Fresh and spent catalysts were provided by Phillips Petroleum. The FCC catalyst was a rare-earth exchanged Y zeolite in a silica-alumina matrix. X-ray fluorescence analyses showed that the rare earths used in preparing the catalysts were a mixture of lanthanum and cerium. Antimony found in the spent catalyst was added during operation of the FCC unit as a way to suppress the adverse effects of deposited nickel. The fresh HDS samples consisted of sulfided nickel and molybdenum on an alumina support. The spent catalyst showed nearly 10% vanadium on the catalyst and a modest increase in nickel and sulfur on the catalyst as a result of operations. Hydrocracking catalysts were not available for this study.

CM Wai; JG Frye; JL Fulton; LE Bowman; LJ Silva; MA Gerber

1999-09-30T23:59:59.000Z

23

Hydrotreating operations discussed at refining meeting  

SciTech Connect

At the most recent National Petroleum Refiners Association question and answer session on refining and petrochemical technology, refiners and a panel of experts exchanged experiences on hydrotreater operations. Topics addressed included reactor pressurization, scale basket removal, and the use of antifoulants in effluent exchangers. This article presents comments from the panelists on the following questions. (1) What is the industry practice used to speed up the pressurization of 2.25 Cr/1 Mo reactors during start-up? Is there any relationship between reactor skin temperature and pressure used? (2) Has anyone removed scale baskets from a hydrotreating reactor and compared operations before and after? If so, were there any noticeable differences? Why? (3) What is the industry experience with the use of antifoulants for hydrocracking or hydrotreating reactor effluent exchangers?

NONE

1995-06-12T23:59:59.000Z

24

Blast furnace coke quality in relation to petroleum coke addition  

SciTech Connect

The incorporation of petroleum coke as an additive in industrial coking coal blends is a practice often used by steel companies. A suitable blast furnace coke produced by replacing part of the coking coal blend with a suitable petroleum coke (addition of 5 to 15%), was made by Great Lakes Carbon Corporation and successfully tested at several blast furnaces. This coke had lower reactivity, less ash and slightly higher sulfur content than coke made without the addition of petroleum coke. In contrast with these results, it has been reported in a BCRA study that additions of petroleum coke to a strong coking coal, above 5 wt%, increased coke reactivity. These differences may be explained on the basis of the coal or blend characteristics to which petroleum coke is added. Petroleum coke addition seems to give better results if the coal/blend has high fluidity. The present situation in Spain is favorable for the use of petroleum coke. So, a study of laboratory and semi-industrial scale was made to assess the possibility of using petroleum coke as an additive to the typical industrial coal blend coked by the Spanish Steel Company, ENSIDESA. The influence of the petroleum coke particle size was also studied to semi-industrial scale.

Alvarez, R.; Diez, M.A.; Menendez, J.A.; Barriocanal, C.; Pis, J.J. [CSIC, Oviedo (Spain). Inst. Nacional del Carbon; Sirgado, M. [ENSIDESA, Aviles (Spain)

1995-12-01T23:59:59.000Z

25

100% Pet coke or pet coke blends combustion  

SciTech Connect

Information is outlined on the combustion of 100 percent petroleum coke or petroleum coke blends. Data are presented on NISCO overviews; fuel (coke) characteristics; delayed coke analysis (1995-96); limestone characteristics/effects; limestone preparation; ash characteristics; vortex finders; agglomerization; and NISCO performance results.

Swindle, D.L.

1996-12-31T23:59:59.000Z

26

Effect of Narrow Cut Oil Shale Distillates on HCCI Engine Performance  

SciTech Connect

In this investigation, oil shale crude obtained from the Green River Formation in Colorado using Paraho Direct retorting was mildly hydrotreated and distilled to produce 7 narrow boiling point fuels of equal volumes. The resulting derived cetane numbers ranged between 38.3 and 43.9. Fuel chemistry and bulk properties strongly correlated with boiling point.

Eaton, Scott J [ORNL; Bunting, Bruce G [ORNL; Lewis Sr, Samuel Arthur [ORNL; Fairbridge, Craig [National Centre for Upgrading Technology, Canada

2009-01-01T23:59:59.000Z

27

Desulfurization of coke oven gas from the coking of coking coal blended with a sorbent and waste plastic  

Science Journals Connector (OSTI)

A new way to implement the simultaneous reutilization of solid waste, the desulfurization of coke oven gas (COG), and even the desulfurization of coke by the co-coking of coking coal (CC) and waste plastic (WP).....

Zhao Rongfang; Ye Shufeng; Xie Yusheng…

2007-03-01T23:59:59.000Z

28

Methods of hydrotreating a liquid stream to remove clogging compounds  

DOE Patents (OSTI)

A method includes producing formation fluid from a subsurface in situ heat treatment process. The formation fluid is separated to produce a liquid stream and a gas stream. At least a portion of the liquid stream is provided to a hydrotreating unit. At least a portion of selected in situ heat treatment clogging compositions in the liquid stream are removed to produce a hydrotreated liquid stream by hydrotreating at least a portion of the liquid stream at conditions sufficient to remove the selected in situ heat treatment clogging compositions.

Minderhoud, Johannes Kornelis [Amsterdam, NL; Nelson, Richard Gene [Katy, TX; Roes, Augustinus Wilhelmus Maria [Houston, TX; Ryan, Robert Charles [Houston, TX; Nair, Vijay [Katy, TX

2009-09-22T23:59:59.000Z

29

Influence of coal preparation and coking conditions on coke reactivity  

Science Journals Connector (OSTI)

The influence of various technological factors on the high-temperature properties of coke is investigated. It is found that factors facilitating an orderly organic structure of the coke (fine grinding and comp...

D. V. Miroshnichenko

2009-02-01T23:59:59.000Z

30

Modified coal batch in coking  

Science Journals Connector (OSTI)

The influence of volatile products from low-metamorphic poorly clinkering G coal on plasticmass formation in rammed batch during coking is considered. An experimental batch of modified coke has been produced at P...

A. G. Starovoit; E. I. Malyi; M. S. Chemerinskii; M. A. Starovoit…

2013-05-01T23:59:59.000Z

31

Met coke world summit 2005  

SciTech Connect

Papers are presented under the following session headings: industry overview and market outlook; coke in the Americas; the global coke industry; and new developments. All the papers (except one) only consist of a copy of the overheads/viewgraphs.

NONE

2005-07-01T23:59:59.000Z

32

Coking and gasification process  

DOE Patents (OSTI)

An improved coking process for normally solid carbonaceous materials wherein the yield of liquid product from the coker is increased by adding ammonia or an ammonia precursor to the coker. The invention is particularly useful in a process wherein coal liquefaction bottoms are coked to produce both a liquid and a gaseous product. Broadly, ammonia or an ammonia precursor is added to the coker ranging from about 1 to about 60 weight percent based on normally solid carbonaceous material and is preferably added in an amount from about 2 to about 15 weight percent.

Billimoria, Rustom M. (Houston, TX); Tao, Frank F. (Baytown, TX)

1986-01-01T23:59:59.000Z

33

Characterization of liquids derived from laboratory coking of decant oil and co-coking of Pittsburgh seam bituminous coal with decant oil  

SciTech Connect

In this study, decant oil and a blend of Pittsburgh seam bituminous coal with decant oil were subjected to coking and co-coking in a laboratory-scale delayed coker. Higher yields of coke and gas were obtained from co-coking than from coking. Coal addition into the feedstock resulted in lighter overhead liquid. GC/MS analyses of gasoline, jet fuel, and diesel show that co-coking of coal/decant oil gave higher quantity aromatic components than that of coking of decant oil alone. Simulated distillation gas chromatography analyses of overhead liquids and GC/MS analyses of vacuum fractions show that when coal was reacted with a decant oil, the coal constituents contributed to the distillable liquids. To address the reproducibility of the liquid products, overhead liquid samples collected at the first, third, and fifth hours of experiments of 6 h duration were evaluated using simulated distillation gas chromatography and {sup 1}H and {sup 13}C NMR. NMR analyses of the liquid products showed that, even though there were slight changes in the {sup 1}H and {sup 13}C spectra, the standard deviation was low for the time-dependent samples. Simulated distillation gas chromatography showed that the yields of refinery boiling range materials (i.e., gasoline, jet fuel, diesel, and fuel oil cuts) were reproducible between runs. Fractionation of the overhead liquids into refinery boiling range materials (gasoline, jet fuel, diesel, fuel oil fractions) showed that the boiling range materials and chemical compositions of fractions were found to be reproducible. 54 refs., 17 tabs.

Omer Gul; Caroline Clifford; Leslie R. Rudnick; Harold H. Schobert [Pennsylvania State University, University Park, PA (United States)

2009-05-15T23:59:59.000Z

34

Coke and Coal Research  

Science Journals Connector (OSTI)

... A. Mott at the University of Sheffield, are concerned with problems affecting the hard coke industry, which enjoys facilities for large-scale experimentation through its member firms such as ... of the body organizing this work visited the Kingston and Fulham Laboratories of the British Coal Utilisation Research Association on September 9. Mr. J. G. Bennett, director of ...

1943-09-18T23:59:59.000Z

35

Investigation of Bonding Mechanism of Coking on Semi-coke from Lignite with Pitch and Tar  

Science Journals Connector (OSTI)

Investigation of Bonding Mechanism of Coking on Semi-coke from Lignite with Pitch and Tar ... Study on the coking mechanism of coal and coal tar pitches. ...

Vedat Arslan

2006-08-16T23:59:59.000Z

36

Winter Distillate  

Gasoline and Diesel Fuel Update (EIA)

5 5 Notes: Throughout the summer, gasoline prices have drawn most of the public's attention, but EIA has been concerned over winter heating fuels as well. q Distillate inventories are likely to begin the winter heating season at low levels, which increases the chances of price volatility such as that seen last winter. q Natural gas does not look much better. q Winter Distillate http://www.eia.doe.gov/pub/oil_gas/petroleum/presentati...00/winter_distillate_and_natural_gas_outlook/sld001.htm [8/10/2000 4:35:57 PM] Slide 2 of 25 Notes: Residential heating oil prices on the East Coast (PADD 1) were 39 cents per gallon higher this June than last year (120 v 81 cents per gallon). As many of you already know, the increase is due mainly to increased crude oil prices.

37

Distillation 29 Chem 355 Jasperse DISTILLATION  

E-Print Network (OSTI)

Distillation 29 Chem 355 Jasperse DISTILLATION Background Distillation is a widely used technique for purifying liquids. The basic distillation process involves heating a liquid such that liquid molecules that is condensed and collected must be more pure than the original liquid mix. Distillation can be used to remove

Jasperse, Craig P.

38

Coke | OpenEI  

Open Energy Info (EERE)

18 18 Varnish cache server Browse Upload data GDR 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142278418 Varnish cache server Coke Dataset Summary Description UK National coal (and solid fuels and gases derived from processing coal) are published in Chapter 2 (Solid Fuels and Derived Gases) of the Digest of UK Energy Statistics (DUKES). Included here are the datasets for commodity balances (1998 - 2009); supply and consumption (2005 - 2009) of coal and other fuels (e.g. coke oven gas, blast furnace gas, benzole and tars, etc). Chapter 2 of the report is available: http://www.decc.gov.uk/assets/decc/Statistics/publications/dukes/308-dukes-2010-ch2.pdf Source UK Department of Energy and Climate Change (DECC)

39

Design and construction of coke battery 1A at Radlin coke plant, Poland  

SciTech Connect

In the design and construction of coke battery 1A at Radlin coke plant (Poland), coking of rammed coke with a stationary system was employed for the first time. The coke batteries are grouped in blocks. Safety railings are provided on the coke and machine sides of the maintenance areas.

A.M. Kravchenko; D.P. Yarmoshik; V.B. Kamenyuka; G.E. Kos'kova; N.I. Shkol'naya; V.V. Derevich; A.S. Grankin [Giprokoks, the State Institute for the Design of Coke-Industry Enterprises, Kharkov (Ukraine)

2009-07-15T23:59:59.000Z

40

Catalytic Distillation  

E-Print Network (OSTI)

removing both will occur in the temperature range ne~ded high and low boilers to maintain the tower for reaction. One limitation may be .I the composition profile, exothermic reactions critical point of the system, above w~ich can be easily temperature... with significantly less energy. There are two primary reasons for energy reduction: 1. The heat of reaction for exothermic reactions is fully re covered as useful boilup for fractionation. 2. Fewer attendant distillations are normally required than for a...

Smith, L. A., Jr.; Hearn, D.; Wynegar, D. P.

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Factors influencing coke gasification with carbon dioxide.  

E-Print Network (OSTI)

??Of all coke properties the influence of the catalytic mineral matter on reactivity of metallurgical cokes is least understood. There is limited information about the… (more)

Grigore, Mihaela

2007-01-01T23:59:59.000Z

42

Coke from coal and petroleum  

DOE Patents (OSTI)

A carbonaceous coke is manufactured by the delayed coking of a slurry mixture of from about 10 to about 30 weight percent of caking or non-caking coal and the remainder a petroleum resid blended at below 50.degree. C.

Wynne, Jr., Francis E. (Allison Park, PA); Lopez, Jaime (Pittsburgh, PA); Zaborowsky, Edward J. (Harwick, PA)

1981-01-01T23:59:59.000Z

43

Definition: Petroleum coke | Open Energy Information  

Open Energy Info (EERE)

coke coke Jump to: navigation, search Dictionary.png Petroleum coke A residue high in carbon content and low in hydrogen that is the final product of thermal decomposition in the condensation process in cracking (breaking of carbon-carbon bonds). This product is reported as marketable coke or catalyst coke.Coke from petroleum has a heating value of 6.024 million Btu per barrel.[1] View on Wikipedia Wikipedia Definition Petroleum coke (often abbreviated Pet coke or petcoke) is a carbonaceous solid derived from oil refinery coker units or other cracking processes. Other coke has traditionally been derived from coal. This coke can either be fuel grade (high in sulphur and metals) or anode grade (low in sulphur and metals). The raw coke directly out of the coker is often

44

Identifying Opportunities for Industrial Energy Conservation  

E-Print Network (OSTI)

. Cement Making 5. Vacuum Distillation 4. Cooking 6. Hydrocracking 5. Glass Melting 7. Hydrogen Production 6. Copper Smelting 8. Hydrorefining/Hydrotreating 7. Miscellaneous 9. Visbreaking 10. Petroleum Coking 11. Desulfurization C. Iron and Steel I...

Hoffman, A. R.

1981-01-01T23:59:59.000Z

45

Research on Coal and Coke  

Science Journals Connector (OSTI)

... THE third annual report of the Northern Coke Research Committee records the many-sided activities of its staff working in the Armstrong College ... activities of its staff working in the Armstrong College, Newcastle, on problems of the coals and ...

1932-10-22T23:59:59.000Z

46

Characteristics of coking coal burnout  

SciTech Connect

An attempt was made to clarify the characteristics of coking coal burnout by the morphological analysis of char and fly ash samples. Laboratory-scale combustion testing, simulating an ignition process, was carried out for three kinds of coal (two coking coals and one non-coking coal for reference), and sampled chars were analyzed for size, shape and type by image analysis. The full combustion process was examined in industrial-scale combustion testing for the same kinds of coal. Char sampled at the burner outlet and fly ash at the furnace exit were also analyzed. The difference between the char type, swelling properties, agglomeration, anisotropy and carbon burnout were compared at laboratory scale and at industrial scale. As a result, it was found that coking coals produced chars with relatively thicker walls, which mainly impeded char burnout, especially for low volatile coals.

Nakamura, M. [Ishikawajima-Harima Heavy Industries Co., Ltd., Tokyo (Japan); Bailey, J.G. [Univ. of Newcastle, New South Wales (Australia)

1996-12-31T23:59:59.000Z

47

Influence of petroleum coking additive on the quality of coal batch, coke, and tar  

Science Journals Connector (OSTI)

Given the shortage of coal with good coking properties, a petroleum coking additive is introduced in coal batch so as to expand the range of plasticity. This additive improves coke quality in every respect, excep...

I. I. Mel’nikov; V. M. Kryachuk; D. A. Mezin; A. A. Gorbunov…

2011-12-01T23:59:59.000Z

48

Evaluation of coal and its influence on coke quality and the coking process  

Science Journals Connector (OSTI)

The evaluation of coal batch is considered, along with its influence on coke quality and the coking properties. The quality of the coal available for coking at OAO Zapadno-Sibirskii Metallurgicheskii Kombinat is ...

G. R. Gainieva; V. I. Byzova; N. N. Nazarov; L. D. Nikitin…

2008-10-01T23:59:59.000Z

49

Estimating Coke and Pepsi's Price and Advertising Strategies  

E-Print Network (OSTI)

Strategy Distributions for Coke (First Quarter 1977) a)Paper No. 789 ESTIMATING COKE AND PEPSI'S PRICE ADVERTISINGEconomics July, 1998 Estimating Coke and Pepsi’s Price and

Golan, Amos; Karp, Larry S.; Perloff, Jeffrey M.

1998-01-01T23:59:59.000Z

50

Experimental study of elastoplastic mechanical properties of coke drum materials.  

E-Print Network (OSTI)

??Coke drums are vertical pressure vessels used in the delayed coking process in petroleum refineries. Significant temperature variation during the delayed coking process causes the… (more)

Chen, Jie

2010-01-01T23:59:59.000Z

51

New coke-sorting system at OAO Koks  

SciTech Connect

A new coke-sorting system has been introduced at OAO Koks. It differs from the existing system in that it has no bunkers for all-purpose coke but only bunkers for commercial coke. In using this system with coke from battery 4, the crushing of the coke on conveyer belts, at roller screens, and in the commercial-coke bunkers is studied. After installing braking elements in the coke path, their effectiveness in reducing coke disintegration and improving coke screening is investigated. The granulometric composition and strength of the commercial coke from coke battery 3, with the new coke-sorting system, is evaluated.

B.Kh. Bulaevskii; V.S. Shved; Yu.V. Kalimin; S.D. Filippov [OAO Koks, Kemerovo (Russian Federation)

2009-05-15T23:59:59.000Z

52

Utilization of coke and functionalized coke-based composite for uptake of heavy metals from wastewater .  

E-Print Network (OSTI)

??This study investigated the functionalization of coke particles and their utilization for the preparation of coke-polymer composite. Looking at the possibility of using it for… (more)

Mdlalose, Lindani Mbalenhle

2014-01-01T23:59:59.000Z

53

Catalytic distillation structure  

SciTech Connect

Catalytic distillation structure for use in reaction distillation columns, a providing reaction sites and distillation structure and consisting of a catalyst component and a resilient component intimately associated therewith. The resilient component has at least about 70 volume % open space and being present with the catalyst component in an amount such that the catalytic distillation structure consist of at least 10 volume % open space.

Smith, Jr., Lawrence A. (Bellaire, TX)

1984-01-01T23:59:59.000Z

54

Russian coking coal in 2008 and 2009  

Science Journals Connector (OSTI)

Coal resources and coke production in the second half of 2009 ... are considered. The unsuitability of the available coal for the production of high-strength coke is analyzed.

B. P. Kiselev

2010-10-01T23:59:59.000Z

55

Technological value of coal used for coking  

Science Journals Connector (OSTI)

The technological value of coal used for coking is analyzed, with particular attention to clinkering coal, the coke group, and lean additives, as well as G and GZhO coal. A relation is established between the tec...

A. S. Stankevich; V. S. Stankevich

2013-09-01T23:59:59.000Z

56

Oxidized coal in coking: A review  

Science Journals Connector (OSTI)

A literature review shows that the oxidation of coal changes its granulometric composition, packing density, ... clinkering properties, the quality of the resulting coke, and the yield of coking byproducts. On ac...

N. A. Desna; D. V. Miroshnichenko

2011-05-01T23:59:59.000Z

57

Russian coking coal in 2008 and 2009  

Science Journals Connector (OSTI)

The distribution and quality of Russian coal and coke resources are compared for periods before (the ... definition and determination of the technological value of coal. Analysis of coke strength suggests that, i...

B. P. Kiselev

2009-12-01T23:59:59.000Z

58

Coal fractionation by density for coking purposes  

Science Journals Connector (OSTI)

Scarce coal with good coking properties may be obtained by separating less valuable coal into different density fractions. The use of valuable fractions released in enrichment ensures optimal coking-batch composi...

S. G. Gagarin

2010-09-01T23:59:59.000Z

59

The mechanism of coking pressure generation II: Effect of high volatile matter coking coal, semi-anthracite and coke breeze on coking pressure and contraction  

Science Journals Connector (OSTI)

One of the most important aspects of the cokemaking process is to control and limit the coking pressure since excessive coking pressure can lead to operational problems and oven wall damage. Following on from a previous paper on plastic layer permeability we have studied the effect of contraction of semi-coke on coking pressure and the effect of organic additives on contraction. A link between contraction (or simulated contraction) outside the plastic layer and coking pressure was demonstrated. The interaction between this contraction, local bulk density around the plastic layer and the dependence of the permeability of the plastic layer on bulk density was discussed as possible mechanisms for the generation of coking pressure. The effect of blending either a high volatile matter coal or one of two semi-anthracites with low volatile matter, high coking pressure coals on the coking pressure of the binary blends has been explained using this mechanism.

Merrick Mahoney; Seiji Nomura; Koichi Fukuda; Kenji Kato; Anthony Le Bas; David R. Jenkins; Sid McGuire

2010-01-01T23:59:59.000Z

60

Trends in the automation of coke production  

SciTech Connect

Up-to-date mathematical methods, such as correlation analysis and expert systems, are employed in creating a model of the coking process. Automatic coking-control systems developed by Giprokoks rule out human error. At an existing coke battery, after introducing automatic control, the heating-gas consumption is reduced by {>=}5%.

R.I. Rudyka; Y.E. Zingerman; K.G. Lavrov [Giprokoks, the State Institute for the Design of Coke-Industry Enterprises, Kharkov (Ukraine)

2009-07-15T23:59:59.000Z

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Clean Production of Coke from Carbonaceous Fines  

SciTech Connect

In order to produce steel (a necessary commodity in developed nations) using conventional technologies, you must have metallurgical coke. Current coke-making technology pyrolyzes high-quality coking coals in a slot oven, but prime coking coals are becoming more expensive and slot ovens are being shut-down because of age and environmental problems. The United States typically imports about 4 million tons of coke per year, but because of a world-wide coke scarcity, metallurgical coke costs have risen from about $77 per tonne to more than $225. This coke shortage is a long-term challenge driving up the price of steel and is forcing steel makers to search for alternatives. Combustion Resources (CR) has developed a technology to produce metallurgical coke from alternative feedstocks in an environmentally clean manner. The purpose of the current project was to refine material and process requirements in order to achieve improved economic benefits and to expand upon prior work on the proposed technology through successful prototype testing of coke products. The ultimate objective of this project is commercialization of the proposed technology. During this project period, CR developed coke from over thirty different formulations that meet the strength and reactivity requirements for use as metallurgical coke. The technology has been termed CR Clean Coke because it utilizes waste materials as feedstocks and is produced in a continuous process where pollutant emissions can be significantly reduced compared to current practice. The proposed feed material and operating costs for a CR Clean Coke plant are significantly less than conventional coke plants. Even the capital costs for the proposed coke plant are about half that of current plants. The remaining barrier for CR Clean Coke to overcome prior to commercialization is full-scale testing in a blast furnace. These tests will require a significant quantity of product (tens of thousands of tons) necessitating the construction of a demonstration facility. Talks are currently underway with potential partners and investors to build a demonstration facility that will generate enough coke for meaningful blast furnace evaluation tests. If the testing is successful, CR Clean Coke could potentially eliminate the need for the United States to import any coke, effectively decreasing US Steel industry dependence on foreign nations and reducing the price of domestic steel.

Craig N. Eatough

2004-11-16T23:59:59.000Z

62

Catalytic distillation structure  

DOE Patents (OSTI)

Catalytic distillation structure is described for use in reaction distillation columns, and provides reaction sites and distillation structure consisting of a catalyst component and a resilient component intimately associated therewith. The resilient component has at least about 70 volume % open space and is present with the catalyst component in an amount such that the catalytic distillation structure consists of at least 10 volume % open space. 10 figs.

Smith, L.A. Jr.

1984-04-17T23:59:59.000Z

63

Coke–pitch interactions during anode preparation  

Science Journals Connector (OSTI)

Abstract The information on the interactions between coke and pitch is of great value for the aluminum industry. This information can help choose the suitable coke and pitch pairs as well as the appropriate mixing parameters to be used during the production of anodes. In this study, the interaction mechanisms of pitch and coke at the mixing stage were studied by a sessile-drop test using two coal-tar pitches as the liquid and three petroleum cokes as the substrate. The results showed that the coke–pitch interactions are related to both pitch and coke chemical compositions. The contact angle of different coke–pitch systems decreased with increasing time and temperature. At high temperatures, decreasing the pitch viscosity facilitated the spreading of pitch and its penetration into the coke bed. The chemical behavior of petroleum cokes and coal tar pitches were studied using the FT-IR spectroscopy and XPS. The results showed that the wettability behavior of cokes by pitches depends on their physical properties as well as the presence of surface functional groups of coke and pitch which can form chemical bonds.

Arunima Sarkar; Duygu Kocaefe; Yasar Kocaefe; Dilip Sarkar; Dipankar Bhattacharyay; Brigitte Morais; Jérôme Chabot

2014-01-01T23:59:59.000Z

64

Energy Efficiency Improvement in the Petroleum Refining Industry  

E-Print Network (OSTI)

i.e. crude distillation, hydrotreating, reforming, vacuumthe severity and in hydrotreating the treated feed may

Worrell, Ernst; Galitsky, Christina

2005-01-01T23:59:59.000Z

65

Effect of Indian Medium Coking Coal on Coke Quality in Non-recovery Stamp Charged Coke Oven  

Science Journals Connector (OSTI)

Abstract The maximum possibility of utilizing the Indian coking coals and inferior grade coking coal for producing metallurgical coke through non-recovery stamp charging technology was investigated. Indian indigenous coals contained low percent of vitrinite ( 15%) compared to imported coking coal. Therefore, the selection of appropriate proportion of different types of coals was a major challenge for coke makers. Coal blend selection criterion based on a single coefficient, named as composite coking potential (CCP), was developed. The use of increased proportion of semi-soft coal (crucible swelling number of 2.5) and high ash (? 15%) indigenous coal in the range of 20%–35% and 20%–65% respectively in the blends resulted in good quality of coke. Plant data of a non-recovery coke oven were used for developing and validating the model. The results showed that the coke strength after reaction (CSR) varied in the range of 63. 7%–67.7% and the M40 value was between 81.8 and 89.3 in both the cases.

H.P. Tiwari; P.K. Banerjee; V.K. Saxena; S.K. Haldar

2014-01-01T23:59:59.000Z

66

Using coke-battery flue gas to dry coal batch before coking  

Science Journals Connector (OSTI)

The utilization of heat from coke-battery flue gases and other potential secondary energy resources in drying coal batch prior to coking is considered. The main factors that influence ... . The reduction in moist...

A. Ya. Eremin; V. G. Mishchikhin; S. G. Stakheev; R. R. Gilyazetdinov…

2011-03-01T23:59:59.000Z

67

Selecting the optimum coke pushing sequence  

SciTech Connect

The sequence of pushing coke ovens is one of the most important aspects of battery operation. The sequence must satisfy a number of technical and process conditions: (1) achieve maximum heating-wall life by avoiding destructive expansion pressure in freshly charged ovens and during pushing of the finished coke; (2) ensure uniform brickwork temperature and prevent overheating by compensating for the high thermal flux in freshly charged ovens due to accumulated heat in adjacent ovens that are in the second half of the coking cycle; (3) ensure the most favorable working conditions and safety for operating personnel; (4) provide additional opportunities for repair personnel to perform various types of work, such as replacing coke-machine rails, without interrupting coal production; (5) perform the maximum number of coke-machine operations simultaneously: pushing, charging, and cleaning doors, frames, and standpipe elbows; and (6) reduce electricity consumption by minimizing idle travel of coke machines.

V.T. Krivoshein; A.V. Makarov [ZAO Trest Koksokhimmontazh (Russian Federation)

2007-01-15T23:59:59.000Z

68

Fast Pyrolysis and Hydrotreating 2013 State of Technology R&D and Projections to 2017  

SciTech Connect

This report documents the FY13 modeled costs and experimental basis for those costs for fast pyrolyis and hydrotreating to liquid fuels. The report also documents the projected costs to 2013.

Jones, Susanne B.; Snowden-Swan, Lesley J.; Meyer, Pimphan A.; Zacher, Alan H.; Olarte, Mariefel V.; Drennan, Corinne

2014-04-16T23:59:59.000Z

69

Technological value of coal concentrates for coking  

Science Journals Connector (OSTI)

Options are outlined for calculating the technological value of coal and coal concentrates in the context of contractual obligations and the quality of the coke produced.

E. N. Stepanov; G. V. Larin; A. E. Stepanova; I. V. Semiokhina

2010-02-01T23:59:59.000Z

70

Multipartite nonlocality distillation  

SciTech Connect

The stronger nonlocality than that allowed in quantum theory can provide an advantage in information processing and computation. Since quantum entanglement is distillable, can nonlocality be distilled in the nonsignalling condition? The answer is positive in the bipartite case. In this article the distillability of the multipartite nonlocality is investigated. We propose a distillation protocol solely exploiting xor operations on output bits. The probability-distribution vectors and matrix are introduced to tackle the correlators. It is shown that only the correlators with extreme values can survive the distillation process. As the main result, the amplified nonlocality cannot maximally violate any Bell-type inequality. Accordingly, a distillability criterion in the postquantum region is proposed.

Hsu, Li-Yi; Wu, Keng-Shuo [Department of Physics, Chung Yuan Christian University, Chungli 32023, Taiwan (China)

2010-11-15T23:59:59.000Z

71

Cumene by catalytic distillation  

SciTech Connect

Catalytic distillation, a combination of catalytic reaction and distillation in a single column, has several advantages when used in a process to make cumene from benzene and propylene. An extremely high purity cumene is obtained in high yield. The catalytic distillation principle was used in an earlier process to make MTBE. A unit, started up up in Houston refinery in 1981, operated successfully for four years. Since then, three other MTBE units of this design have gone into service.

Shoemaker, J.D.; Jones, E.M. Jr.

1987-06-01T23:59:59.000Z

72

Estimating Coke and Pepsi's price and advertising strategies  

E-Print Network (OSTI)

Working Paper No. 789 ESTIMATING COKE AND PEPSI’ PRICE S ANDand Advertising Strategies: Coke and Pepsi) by Amos Golan,Revised, March 1999 Estimating Coke and Pepsi’s Price and

Golan, Amos; Karp, Larry; Perloff, Jeffrey M.

1999-01-01T23:59:59.000Z

73

Generalized entanglement distillation  

E-Print Network (OSTI)

We present a way for the entanglement distillation of genuine mixed state. Different from the conventional mixed state in entanglement purification protocol, each components of the mixed state in our protocol is a less-entangled state, while it is always a maximally entangled state. With the help of the weak cross-Kerr nonlinearity, this entanglement distillation protocol does not require the sophisticated single-photon detectors. Moreover, the distilled high quality entangled state can be retained to perform the further distillation. These properties make it more convenient in practical applications.

Yu-Bo Sheng; Lan Zhou

2014-04-14T23:59:59.000Z

74

Interaction of low-metamorphic coal components in coking batch  

Science Journals Connector (OSTI)

The interaction of low-metamorphic coal components in coking batch during pyrolysis is studied. The characteristics of the resulting coke are presented, and the partial hydrogenation is...

E. I. Malyi; A. S. Koverya; M. A. Starovoit

2010-08-01T23:59:59.000Z

75

Clinkering properties of rammed coking coal and coal batches  

Science Journals Connector (OSTI)

The clinkering properties of rammed coking coal and coal batches are investigated. There is a close relation between the clinkering properties and coke quality.

V. M. Shmal’ko; M. A. Solov’ev

2009-03-01T23:59:59.000Z

76

Strength of the coke fillers of carbon materials  

SciTech Connect

Relationships between the ultimate compression strengths of coke fillers for carbon materials determined by various techniques and structures, final coke treatment temperatures, etc., are considered.

V.S. Ostrovskii [Research Institute of Structural Graphite Materials, Moscow (Russian Federation)

2008-12-15T23:59:59.000Z

77

New designs in the reconstruction of coke-sorting systems  

SciTech Connect

In recent Giprokoks designs for the reconstruction of coke-sorting systems, high-productivity vibrational-inertial screens have been employed. This permits single-stage screening and reduction in capital and especially operating expenditures, without loss of coke quality. In two-stage screening, >80 mm coke (for foundry needs) is additionally separated, with significant improvement in quality of the metallurgical coke (25-80 mm). New designs for the reconstruction of coke-sorting systems employ mechanical treatment of the coke outside the furnace, which offers new scope for stabilization of coke quality and permits considerable improvement in mechanical strength and granulometric composition of the coke by mechanical crushing.

A.S. Larin; V.V. Demenko; V.L. Voitanik [Giprokoks, the State Institute for the Design of Coke-Industry Enterprises, Kharkov (Ukraine)

2009-07-15T23:59:59.000Z

78

Quantitative Nuclear Magnetic Resonance Spectroscopy as a Tool To Evaluate Chemical Modification of Deep Hydrotreated Recycled Lube Oils  

Science Journals Connector (OSTI)

Quantitative Nuclear Magnetic Resonance Spectroscopy as a Tool To Evaluate Chemical Modification of Deep Hydrotreated Recycled Lube Oils ... Argonne National Laboratory, Argonne, Illinois 60439, United States ...

John V. Muntean; Joseph A. Libera; Seth W. Snyder; Tianpin Wu; Donald C. Cronauer

2012-12-13T23:59:59.000Z

79

Biofuels production from hydrotreating of vegetable oil using supported noble metals, and transition metal carbide and nitride.  

E-Print Network (OSTI)

?? The focus of this research is to prepare non-sulfided hydrotreating catalysts, supported noble metal and transition metal carbide/ nitride, and evaluate their hydrocracking activities… (more)

Wang, Huali

2012-01-01T23:59:59.000Z

80

Catalytic distillation process  

DOE Patents (OSTI)

A method is described for conducting chemical reactions and fractionation of the reaction mixture comprising feeding reactants to a distillation column reactor into a feed zone and concurrently contacting the reactants with a fixed bed catalytic packing to concurrently carry out the reaction and fractionate the reaction mixture. For example, a method for preparing methyl tertiary butyl ether in high purity from a mixed feed stream of isobutene and normal butene comprising feeding the mixed feed stream to a distillation column reactor into a feed zone at the lower end of a distillation reaction zone, and methanol into the upper end of said distillation reaction zone, which is packed with a properly supported cationic ion exchange resin, contacting the C[sub 4] feed and methanol with the catalytic distillation packing to react methanol and isobutene, and concurrently fractionating the ether from the column below the catalytic zone and removing normal butene overhead above the catalytic zone.

Smith, L.A. Jr.

1982-06-22T23:59:59.000Z

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Catalytic distillation process  

DOE Patents (OSTI)

A method for conducting chemical reactions and fractionation of the reaction mixture comprising feeding reactants to a distillation column reactor into a feed zone and concurrently contacting the reactants with a fixed bed catalytic packing to concurrently carry out the reaction and fractionate the reaction mixture. For example, a method for preparing methyl tertiary butyl ether in high purity from a mixed feed stream of isobutene and normal butene comprising feeding the mixed feed stream to a distillation column reactor into a feed zone at the lower end of a distillation reaction zone, and methanol into the upper end of said distillation reaction zone, which is packed with a properly supported cationic ion exchange resin, contacting the C.sub.4 feed and methanol with the catalytic distillation packing to react methanol and isobutene, and concurrently fractionating the ether from the column below the catalytic zone and removing normal butene overhead above the catalytic zone.

Smith, Jr., Lawrence A. (Bellaire, TX)

1982-01-01T23:59:59.000Z

82

Hydrotreating studies involving NiMo/silica-doped hydrous titanium oxide (HTO:Si)-coated alumina catalysts  

SciTech Connect

For hydrotreating a petroleum-derived liquid feed at 400 C, LHSV = 2. 5 g/g{sub cat}/h, and 1500 psig hydrogen (H) pressure, both HDS and HDN activities were roughly equivalent for a name/TO:Si-coated Amocat catalyst and a commercial alumina-supported name catalyst (Amocat 1C). Superior HDN performance was exhibited by the name/TO: Si-coated Amocat catalyst at low H pressure (500 psig) and after H pressure cycling (1500-500-1500 psig) relative to Amocat 1C. Consistent with previous results obtained on a coal-derived liquid feed, the HDS/HDN results with the petroleum-derived liquid showed that the performance of the name/TO:Si-coated Amocat catalyst on an active metals weight basis exceeded the performance of Amocat 1C at all test conditions. The name/TO:Si-coated Amocat catalyst also showed potentially increased hydrogenation activity, increased resistance to deactivation, and increased yields of lower boiling point distillate fractions, although further work is needed.

Gardner, T.J.; Miller, J.E.; McLaughlin, L.I.; Trudell, D.E.

1996-07-01T23:59:59.000Z

83

Advanced Distillation Final Report  

SciTech Connect

The Advanced Distillation project was concluded on December 31, 2009. This U.S. Department of Energy (DOE) funded project was completed successfully and within budget during a timeline approved by DOE project managers, which included a one year extension to the initial ending date. The subject technology, Microchannel Process Technology (MPT) distillation, was expected to provide both capital and operating cost savings compared to conventional distillation technology. With efforts from Velocys and its project partners, MPT distillation was successfully demonstrated at a laboratory scale and its energy savings potential was calculated. While many objectives established at the beginning of the project were met, the project was only partially successful. At the conclusion, it appears that MPT distillation is not a good fit for the targeted separation of ethane and ethylene in large-scale ethylene production facilities, as greater advantages were seen for smaller scale distillations. Early in the project, work involved flowsheet analyses to discern the economic viability of ethane-ethylene MPT distillation and develop strategies for maximizing its impact on the economics of the process. This study confirmed that through modification to standard operating processes, MPT can enable net energy savings in excess of 20%. This advantage was used by ABB Lumus to determine the potential impact of MPT distillation on the ethane-ethylene market. The study indicated that a substantial market exists if the energy saving could be realized and if installed capital cost of MPT distillation was on par or less than conventional technology. Unfortunately, it was determined that the large number of MPT distillation units needed to perform ethane-ethylene separation for world-scale ethylene facilities, makes the targeted separation a poor fit for the technology in this application at the current state of manufacturing costs. Over the course of the project, distillation experiments were performed with the targeted mixture, ethane-ethylene, as well as with analogous low relative volatility systems: cyclohexane-hexane and cyclopentane-pentane. Devices and test stands were specifically designed for these efforts. Development progressed from experiments and models considering sections of a full scale device to the design, fabrication, and operation of a single-channel distillation unit with integrated heat transfer. Throughout the project, analytical and numerical models and Computational Fluid Dynamics (CFD) simulations were validated with experiments in the process of developing this platform technology. Experimental trials demonstrated steady and controllable distillation for a variety of process conditions. Values of Height-to-an-Equivalent Theoretical Plate (HETP) ranging from less than 0.5 inch to a few inches were experimentally proven, demonstrating a ten-fold performance enhancement relative to conventional distillation. This improvement, while substantial, is not sufficient for MPT distillation to displace very large scale distillation trains. Fortunately, parallel efforts in the area of business development have yielded other applications for MPT distillation, including smaller scale separations that benefit from the flowsheet flexibility offered by the technology. Talks with multiple potential partners are underway. Their outcome will also help determine the path ahead for MPT distillation.

Maddalena Fanelli; Ravi Arora; Annalee Tonkovich; Jennifer Marco; Ed Rode

2010-03-24T23:59:59.000Z

84

Determination of electrical resistivity of dry coke beds  

SciTech Connect

The electrical resistivity of the coke bed is of great importance when producing FeMn, SiMn, and FeCr in a submerged arc furnace. In these processes, a coke bed is situated below and around the electrode tip and consists of metallurgical coke, slag, gas, and metal droplets. Since the basic mechanisms determining the electrical resistivity of a coke bed is not yet fully understood, this investigation is focused on the resistivity of dry coke beds consisting of different carbonaceous materials, i.e., coke beds containing no slag or metal. A method that reliably compares the electrical bulk resistivity of different metallurgical cokes at 1500{sup o} C to 1600{sup o}C is developed. The apparatus is dimensioned for industrial sized materials, and the electrical resistivity of anthracite, charcoal, petroleum coke, and metallurgical coke has been measured. The resistivity at high temperatures of the Magnitogorsk coke, which has the highest resistivity of the metallurgical cokes investigated, is twice the resistivity of the Corus coke, which has the lowest electrical resistivity. Zdzieszowice and SSAB coke sort in between with decreasing resistivities in the respective order. The electrical resistivity of anthracite, charcoal, and petroleum coke is generally higher than the resistivity of the metallurgical cokes, ranging from about two to about eight times the resistivity of the Corus coke at 1450{sup o}C. The general trend is that the bulk resistivity of carbon materials decreases with increasing temperature and increasing particle size.

Eidem, P.A.; Tangstad, M.; Bakken, J.A. [NTNU, Trondheim (Norway)

2008-02-15T23:59:59.000Z

85

Distillate Stocks Expected  

Gasoline and Diesel Fuel Update (EIA)

4 4 Notes: So let's get to what you want to know. What do we expect this upcoming winter? When EIA's demand forecast is combined with its outlook for production and net imports, distillate stocks are projected to remain towards the lower end of the normal range. We are forecasting about an 11 million barrel build between the end of July 2001 and the end of November 2001, slightly more than the average over the past 5 years (10 million barrels), but less than the average of the last 10 years (15 ½ million barrels). If, however, economic incentives are high enough, distillate stocks could build more, resulting in a higher distillate stock level heading into the winter. Of course, the reverse is true as well, if for example, the distillate fuel refining spread declines substantially. Since 1994,

86

Hydrotreating the native bitumen from the Whiterocks tar sand deposit  

SciTech Connect

The bitumen from the Whiterocks oil sand deposit in the Uinta Basin of eastern Utah was hydrotreated in a fixed-bed reactor to determine the extent of upgrading as a function of process operating variables. The process variables investigated included reactor pressure (11.2--16.7 MPa); reactor temperature (641--712 K) and liquid hourly space velocity (0.19--0.77 h{sup {minus}1}). The hydrogen/oil ratio, 890 m{sup 3} m{sup {minus}3} was fixed in all experiments. A sulphided Ni-Mo on alumina hydrodenitrogenation catalyst was used in these studies. The deactivation of the catalyst, 0.2 {degree}C/day, was monitored by thedecline in the API gravity of the total liquid product with time on-stream at a standard set of conditions. The effect of temperature, WHSV, and pressure on denitrogenation, desulphurization, and metals removalwere studied and apparent kinetic parameters determined. The effect of process variables on residue conversion and Conradson carbon residue reduction were also investigated.

Longstaff, D.C.; Deo, M.D.; Hanson, F.V.

1993-03-01T23:59:59.000Z

87

Distillation: The Efficient Workhorse  

E-Print Network (OSTI)

DISTILLATION: THE EFFICIENT WORKHORSE Dan Steinmeyer Monsanto Company St. Louis, Missouri Distillation is inherently highly efficient: phase separation is clean it is relatively easy to build a mUltistage countercurrent device equilibrium... of separation to the work pmbedded in the reboiler and condenser thermal flows. The right application is one where the streams ? separated both exceed la' of the feed, relative volatility exceeds 1.2, and separation is complete - i.e. pure products...

Steinmeyer, D.

88

Carol G. Cokely's recent Presentations Cokely, C. (2007). Incorporating Service Learing in to the AuD Curriculum. Invited  

E-Print Network (OSTI)

Carol G. Cokely's recent Presentations Cokely, C. (2007). Incorporating Service Learing in to the AuD Curriculum. Invited speaker, Teaching the Management of Hearing Loss, Pittsburgh, PA. Cokely, C, Pittsburgh, PA. Kricos, P.B., Weinstein, B., Lesner, S., Cokely, C., Milstein, D., & Chisolm, T. (2006) How

O'Toole, Alice J.

89

Random multiparty entanglement distillation  

E-Print Network (OSTI)

We describe various results related to the random distillation of multiparty entangled states - that is, conversion of such states into entangled states shared between fewer parties, where those parties are not predetermined. In previous work [Phys. Rev. Lett. 98, 260501 (2007)] we showed that certain output states (namely Einstein-Podolsky-Rosen (EPR) pairs) could be reliably acquired from a prescribed initial multipartite state (namely the W state) via random distillation that could not be reliably created between predetermined parties. Here we provide a more rigorous definition of what constitutes ``advantageous'' random distillation. We show that random distillation is always advantageous for W-class three-qubit states (but only sometimes for Greenberger-Horne-Zeilinger (GHZ)-class states). We show that the general class of multiparty states known as symmetric Dicke states can be readily converted to many other states in the class via random distillation. Finally we show that random distillation is provably not advantageous in the limit of multiple copies of pure states.

Ben Fortescue; Hoi-Kwong Lo

2007-09-25T23:59:59.000Z

90

Delayed Coking of Decant Oil and Coal in a Laboratory-Scale Coking Unit  

Science Journals Connector (OSTI)

The fact that coke quality varies with the chemical composition of the precursor feedstock creates a significant incentive to examine the process of coking and how it relates to the composition of the feedstock. ... (7)?Derbyshire, F. J.; Odoerfer, G. A.; Rudnick, L. R.; Varghese, P.; Whitehurst, D. D. Fundamental studies in the conversion of coals to fuels of increased hydrogen content. ... Bituminous coal/petroleum co-cokes were produced by coking 4:1 blends of vacuum resid (VR)/coal and decant oil (DO)/coal at temperatures of 465 and 500 °C for reaction times of 12 and 18 h, under autogenous pressure in microautoclave reactors. ...

Ömer Gül; Leslie R. Rudnick; Harold H. Schobert

2006-05-18T23:59:59.000Z

91

Spatial variation of coke quality in the non-recovery beehive coke ovens.  

E-Print Network (OSTI)

??More than 50% of hot metal production worldwide takes place in blast furnaces. Coke is the most expensive raw material in the blast furnace. It… (more)

Segers, Magrieta

2006-01-01T23:59:59.000Z

92

Market boundaries for coking-coal concentrates  

Science Journals Connector (OSTI)

The construction of geographic and commodity boundaries is considered in relation to the Russian market for coking-coal concentrates. In this market, uniform commodities ... construction of the market boundaries....

V. A. Brodskii

2011-05-01T23:59:59.000Z

93

Mozambique becomes a major coking coal exporter?  

SciTech Connect

In addition to its potential role as a major international supplier of coking coal, Mozambique will also become a major source of power generation for southern Africa. 3 figs.

Ruffini, A.

2008-06-15T23:59:59.000Z

94

New and revised standards for coke production  

SciTech Connect

The need for new and revised standards for coke production in Ukraine and Russia is outlined. Such standards should address improvements in plant operation, working conditions, environmental protection, energy conservation, fire and explosion safety, and economic indices.

G.A. Kotsyuba; M.I. Alpatov; Y.G. Shapoval [Giprokoks, the State Institute for the Design of Coke-Industry Enterprises, Kharkov (Ukraine)

2009-07-15T23:59:59.000Z

95

Possibilities of coke manufacture in nonpollutant conditions  

SciTech Connect

The paper presents some possibilities to obtain coke briquettes from anthracite, using as binders petroleum pitch, wheat flour, cement, plaster, ashes from power-plants dried from the electrofilters. Specific thermal post-treatment were proposed for each case, such as: oxidation or heating at low temperatures (under 300 C). As a result the authors obtained coke briquettes to be used in small equipment, with no pollutant pyrogenetic treatment.

Barca, F.; Panaitescu, C.; Vidrighin, C.; Peleanu, I. [Politehnica Univ. Bucharest (Romania); Albastroiu, P. [S.C. ICEM S.A., Bucharest (Romania)

1994-12-31T23:59:59.000Z

96

Réactivité de l'anode et désulfuration : effet du niveau de calcination du coke.  

E-Print Network (OSTI)

??Les propriétés du coke et la performance des anodes sont affectées par le niveau de calcination du coke. Une densité de coke (VBD) élevée implique… (more)

Bergeron-Lagacé, Charles-Luc

2012-01-01T23:59:59.000Z

97

Physical, chemical and thermal changes of coals and coal maceral concentrates during coke formation.  

E-Print Network (OSTI)

??Research Doctorate - Doctor of Philosophy (PhD) The measured coke reactivity index (CRI) and coke strength after reaction (CSR) determined in experiments based on coke… (more)

Xie, Wei

2013-01-01T23:59:59.000Z

98

Control of catalytic hydrotreating selectivity with ammonia. Final technical report  

SciTech Connect

The purpose of this study was to explore the possibility of control of product selectivity in the hydroprocessing of coal liquids and related substances by adding small amounts of ammonia. Quinoline was used in this study and in many others as representative of heterocyclic N compounds found in coal liquids. Coal liquids also contain hydroxy pyridines, but by studies with 8-OH quinoline, a representative compound (Part I), we demonstrated that the OH group was rapidly removed at the beginning of reaction to form quinoline, which reacted in the same manner as quinoline fed as such. In Part II we showed that in a mixture of naphthalene and quinoline, with the addition of ammonia there is an operating region in which complete HDN of quinoline can be achieved, but with greater conversion of naphthalene to tetralin instead of to decalin than was the case in the absence of added ammonia. This is of some significance to coal liquefaction since tetralin is a good hydrogen donor, but decalin is not. In Part III we showed that NH{sub 3} addition to a mixture of quinoline and phenanthrene provides an operating region where complete HDN of quinoline can be achieved with reduced formation of hydrogenated phenanthrenes and cracking to biphenyl. Part IV, a study of the hydrodeoxygenation (DHO) of dibenzofuran in the presence of naphthalene, showed that NH{sub 3} strongly inhibits HDO reactions and its effects on naphthalene here were much the same as in Part II. In Part V it was demonstrated that in the hydrotreating of propylbenzene, the addition of ammonia increased the selectivity towards ring hydrogenation (generally desired for reformulated motor fuels) and away from dealkylation (generally undesired), but the overall reaction rate at a fixed temperature drops substantially.

Satterfield, C.N.; Lee, C.; Gultekin, S.

1993-11-01T23:59:59.000Z

99

Giprokoks proposals for improvement in air quality at coke battery 1A of Radlin coke plant  

SciTech Connect

Coke battery 1A, which uses rammed batch, has gone into production at Radlin coke plant (Poland), on the basis of Giprokoks designs. Up-to-date dust-trapping methods are used for the first time within the aspiration systems in the coal-preparation shop and in improving dust collection within the production buildings.

T.F. Trembach; A.G. Klimenko [Giprokoks, the State Institute for the Design of Coke-Industry Enterprises, Kharkov (Ukraine)

2009-07-15T23:59:59.000Z

100

Qutrit Magic State Distillation  

E-Print Network (OSTI)

Magic state distillation (MSD) is a purification protocol that plays a central role in fault tolerant quantum computation. Repeated iteration of the steps of a MSD protocol, generates pure single non-stabilizer states, or magic states, from multiple copies of a mixed resource state using stabilizer operations only. Thus mixed resource states promote the stabilizer operations to full universality. Magic state distillation was introduced for qubit-based quantum computation, but little has been known concerning MSD in higher dimensional qudit-based computation. Here, we describe a general approach for studying MSD in higher dimensions. We use it to investigate the features of a qutrit MSD protocol based on the 5-qutrit stabilizer code. We show that this protocol distills non-stabilizer magic states, and identify two types of states, that are attractors of this iteration map. Finally, we show how these states may be converted, via stabilizer circuits alone, into a state suitable for state injected implementation ...

Anwar, Hussain; Browne, Dan E

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Investigation of bonding mechanism of coking on semi-coke from lignite with pitch and tar  

SciTech Connect

In coking, the bonding ability of inert macerals by reactive macerals is dependent on various parameters and also is related to the wettability of the inert macerals. In this study, the effect of carbonization temperature on the wettability of semi-cokes produced at various temperatures has been investigated. Soma and Yatagan semicokes represent inert macerals, and pitch was used as a reactive structure in the experiments. The briquetted pitch blocks were located on the semi-cokes and heated from the softening temperature of pitch (60{sup o}C) to 140{sup o}C to observe the wettability. In addition, liquid tar was also used to determine the wettability of semi-cokes. From the standpoint of wettability, the temperature of 900{sup o}C was determined to be the critical point for coke produced from sub-bituminous coals. 15 refs., 6 figs., 2 tabs.

Vedat Arslan [Dokuz Eylul University, Izmir (Turkey). Engineering Faculty

2006-10-15T23:59:59.000Z

102

Distillate Fuel Oil Sales for Residential Use  

Annual Energy Outlook 2012 (EIA)

End Use Product: Residential - Distillate Fuel Oil Residential - No. 1 Residential - No. 2 Residential - Kerosene Commercial - Distillate Fuel Oil Commercial - No. 1 Distillate...

103

Cumene by Catalytic Distillation  

SciTech Connect

The novel concept of Catalytic Distillation has been commercialized in the CRandL MTBE process, in which combined reaction and distillation provide energy savings over conventional processes. This concept has now been extended to production of cumene from benzene and propylene. In this case the advantages of the technique are not only energy savings but significant reductions in by-product losses and capital requirements. In this paper the development of the process is discussed and the economics of commercial operation are presented.

Jones, E.M.; Mawer, J.

1986-01-01T23:59:59.000Z

104

Relationship between the technical parameters of cokes produced from blends of three Polish coals of different coking ability  

Science Journals Connector (OSTI)

The demand for metallurgical coke for blast furnaces is forcing the coking industry to look for new sources of coking coals. The physical and chemical parameters of coals used in coking blends determine the quality (reactivity and strength) of the finished cokes. This study examines the technical properties of the cokes produced from various blends of three Polish coals with different coking. These coals were collected from three mines: Zofiówka, Szczyg?owice, and Krupi?ski (Upper Silesian Coal Basin, Poland). The coal charges were coked in the laboratory scale, at temperatures of up to 1000 °C, in an inert atmosphere. The coke reactivity (index CRI) and the coke strength after reaction (CSR) were measured and correlated to the properties of parent coals using statistical analysis. The result of this study shows strong relationships between the concentration of the best coking coal (Zofiówka) in the blend and the CRI and CSR of the resulting coke. The CRI and CSR parameters for cokes obtained from single coals and from their blends show the additive character. This study also confirms the linear relationship between CRI and CSR parameters of the cokes.

A. Koszorek; M. Krzesi?ska; S. Pusz; B. Pilawa; B. Kwieci?ska

2009-01-01T23:59:59.000Z

105

Total Number of Operable Refineries  

U.S. Energy Information Administration (EIA) Indexed Site

Data Series: Total Number of Operable Refineries Number of Operating Refineries Number of Idle Refineries Atmospheric Crude Oil Distillation Operable Capacity (B/CD) Atmospheric Crude Oil Distillation Operating Capacity (B/CD) Atmospheric Crude Oil Distillation Idle Capacity (B/CD) Atmospheric Crude Oil Distillation Operable Capacity (B/SD) Atmospheric Crude Oil Distillation Operating Capacity (B/SD) Atmospheric Crude Oil Distillation Idle Capacity (B/SD) Vacuum Distillation Downstream Charge Capacity (B/SD) Thermal Cracking Downstream Charge Capacity (B/SD) Thermal Cracking Total Coking Downstream Charge Capacity (B/SD) Thermal Cracking Delayed Coking Downstream Charge Capacity (B/SD Thermal Cracking Fluid Coking Downstream Charge Capacity (B/SD) Thermal Cracking Visbreaking Downstream Charge Capacity (B/SD) Thermal Cracking Other/Gas Oil Charge Capacity (B/SD) Catalytic Cracking Fresh Feed Charge Capacity (B/SD) Catalytic Cracking Recycle Charge Capacity (B/SD) Catalytic Hydro-Cracking Charge Capacity (B/SD) Catalytic Hydro-Cracking Distillate Charge Capacity (B/SD) Catalytic Hydro-Cracking Gas Oil Charge Capacity (B/SD) Catalytic Hydro-Cracking Residual Charge Capacity (B/SD) Catalytic Reforming Charge Capacity (B/SD) Catalytic Reforming Low Pressure Charge Capacity (B/SD) Catalytic Reforming High Pressure Charge Capacity (B/SD) Catalytic Hydrotreating/Desulfurization Charge Capacity (B/SD) Catalytic Hydrotreating Naphtha/Reformer Feed Charge Cap (B/SD) Catalytic Hydrotreating Gasoline Charge Capacity (B/SD) Catalytic Hydrotreating Heavy Gas Oil Charge Capacity (B/SD) Catalytic Hydrotreating Distillate Charge Capacity (B/SD) Catalytic Hydrotreating Kerosene/Jet Fuel Charge Capacity (B/SD) Catalytic Hydrotreating Diesel Fuel Charge Capacity (B/SD) Catalytic Hydrotreating Other Distillate Charge Capacity (B/SD) Catalytic Hydrotreating Residual/Other Charge Capacity (B/SD) Catalytic Hydrotreating Residual Charge Capacity (B/SD) Catalytic Hydrotreating Other Oils Charge Capacity (B/SD) Fuels Solvent Deasphalting Charge Capacity (B/SD) Catalytic Reforming Downstream Charge Capacity (B/CD) Total Coking Downstream Charge Capacity (B/CD) Catalytic Cracking Fresh Feed Downstream Charge Capacity (B/CD) Catalytic Hydro-Cracking Downstream Charge Capacity (B/CD) Period:

106

Interactions among Different Fractions in the Thermoplastic State of Goonyella Coking Coal  

Science Journals Connector (OSTI)

An understanding of thermoplastic behavior in coking coal is essential in ascertaining appropriate procedures for the efficient conversion of slightly coking coals into good quality cokes. ... The conversion of coal into coke is detd. ...

Takahiro Yoshida; Toshimasa Takanohashi; Masashi Iino; Haruo Kumagai; Kenji Kato

2004-01-09T23:59:59.000Z

107

Tritium Attenuation by Distillation  

SciTech Connect

The objective of this study was to determine how a 100 Area distillation system could be used to reduce to a satisfactory low value the tritium content of the dilute moderator produced in the 100 Area stills, and whether such a tritium attenuator would have sufficient capacity to process all this material before it is sent to the 400 Area for reprocessing.

Wittman, N.E.

2001-07-31T23:59:59.000Z

108

Topological Quantum Distillation  

E-Print Network (OSTI)

We construct a class of topological quantum codes to perform quantum entanglement distillation. These codes implement the whole Clifford group of unitary operations in a fully topological manner and without selective addressing of qubits. This allows us to extend their application also to quantum teleportation, dense coding and computation with magic states.

H. Bombin; M. A. Martin-Delgado

2006-05-16T23:59:59.000Z

109

Hydrothermal Treatment of a Sub-bituminous Coal and Its Use in Coking Blends  

Science Journals Connector (OSTI)

Crucible coking determinations suggest that hydrothermal treatment can greatly increase the coke strength and the particle coke strength after reaction toward CO2 and decrease the coke reactivity when the hydrothermally treated coals were used in the coal blends instead of the raw coal. ... While the cokes from the crucible coking experiments were subjected to 800 rotations at a speed of 25 rpm, the weight percent of coke particles (>0.2 ... The coal charges were coked in the lab. ...

Hengfu Shui; Ye Wu; Zhicai Wang; Zhiping Lei; Changhui Lin; Shibiao Ren; Chunxiu Pan; Shigang Kang

2012-11-26T23:59:59.000Z

110

Existing technology transfer report: second-stage support. [SRC hydrotreating catalysts  

SciTech Connect

Since the economics of SRC hydrotreating depends greatly on both catalyst life and the type of reactor system, an extensive research program was initiated to address several issues pertaining to the design and operation of a large-scale SRC hydrotreater, including catalyst activity and aging, reactor design, and catalyst replacement rate. The objectives of this program were to (1) study the hydrotreating of SRC in an upflow fixed-bed reactor, (2) study the hydrotreating of SRC in a downflow fixed-bed reactor, (3) compare the performances of upflow and downflow fixed-bed reactors, (4) study the fluid dynamics of upflow and downflow fixed-bed reactors, and (5) study the activity, selectivity, and aging of a specially prepared monolithic catalyst for hydroprocessing SRC. APCI focused its work on the fixed-bed reactor, since it was conventionally used in hydrotreating petroleum products. The active materials used to prepare the catalysts were metals selected from Groups VI and VIII of the periodic table. Catalysts such as cobalt-molybdenum, nickel-molybdenum, and nickel-tungsten supported on alumina were tested. These catalysts are usually poisoned by the ash present in coal-derived materials. Therefore, another aspect of the internally funded program was to develop an ash-tolerant catalyst to successfully hydrotreat SRC. An ash-tolerant catalyst was prepared by supporting the catalytic metals on a honeycomb (monolithic) structure. The honeycomb structure was thought to be extremely ash resistant because of its high geometric surface area per unit volume and large open cross-sectional area. Furthermore, liquid flow in the channels of the honeycomb was expected to be laminar, with little or no induced turbulence due to form friction. Activity of the so-called ash-tolerant honeycomb (monolithic) catalyst was measured for SRC hydrotreating in a catalytic fixed-bed reactor, using both upflow and downflow operating modes. 2 references, 14 figures, 6 tables.

Garg, D.

1984-06-01T23:59:59.000Z

111

Heteroazeotropic Batch Distillation Feasibility and Operation  

E-Print Network (OSTI)

Heteroazeotropic Batch Distillation Feasibility and Operation by Efstathios Skouras and distillation is the dominating unit operation for such separations. However, the presence of azeotropes and non distillation as the best suited process. Among, various techniques to enhance distillation, heterogeneous

Skogestad, Sigurd

112

MULTIVESSEL BATCH DISTILLATION EXPERIMENTAL VERIFICATION  

E-Print Network (OSTI)

MULTIVESSEL BATCH DISTILLATION ­ EXPERIMENTAL VERIFICATION Bernd Wittgens and Sigurd Skogestad 1 The experimental verification of the operation of a multivessel batch distillation column, operated under total vessels, provides a generalization of previously proposed batch distillation schemes. We propose a simple

Skogestad, Sigurd

113

Elegest coal in coking batch at OAO EVRAZ ZSMK  

Science Journals Connector (OSTI)

The coking of batch with different proportions of Elegest coal from the Ulug-Khemsk Basin is investigated ... production conditions. The mechanical strength of the coke is improved when such coal is used in the b...

V. L. Osetkovskii; M. M. Naimark; V. G. Lupenko; A. E. Bazegskiy…

2013-03-01T23:59:59.000Z

114

Modification of poorly clinkering coal for use in coking  

Science Journals Connector (OSTI)

If coal is modified by the volatile products formed in pyrolysis, high-quality blast-furnace coke may be produced from batch with a smaller proportion of expensive clinkering coal. In such coking, the batch is mo...

E. I. Malyi

2014-03-01T23:59:59.000Z

115

Improving the preparation of coal batch for coking  

Science Journals Connector (OSTI)

Various methods of preparing coal for coking are analyzed. Laboratory experiments are conducted with a view to obtaining higher-quality coke from batch with a high content of poorly clinkering coal.

M. S. Chemerinskii; A. G. Starovoit; E. I. Malyi

2012-07-01T23:59:59.000Z

116

Coking of coal batch with different content of oxidized coal  

Science Journals Connector (OSTI)

The use of oxidized coal in coking batch increases the analytical moisture content and ... increases the oxygen content; reduces the gross coke yield and the yield of tar, benzene ... of carbon dioxide, pyrogenet...

D. V. Miroshnichenko; I. D. Drozdnik; Yu. S. Kaftan; N. B. Bidolenko…

2012-05-01T23:59:59.000Z

117

Kuznetsk Basin coking coal: Reserves and technological value  

Science Journals Connector (OSTI)

Reserves of Kuznetsk Basin coking coal are analyzed, in terms of rank composition and scope for coke production. The technological value of the coal is evaluated by the OOO VNITs Ugol...

V. P. Ivanov; V. Yu. Sushkov; A. A. Torgunakov; S. A. Pantykin

2008-09-01T23:59:59.000Z

118

Determining the environmental and thermal characteristics of coke oven batteries  

Science Journals Connector (OSTI)

A method is proposed for assessing the environmental and thermal characteristics of coke oven batteries and is tested for coke oven batteries 1 and 5 at OAO Zaporozhkoks. On ... the basis of data for the environm...

E. I. Toryanik; A. L. Borisenko; A. S. Malysh; A. A. Lobov…

2009-12-01T23:59:59.000Z

119

Development of coke strength after reaction (CSR) at Dofasco  

SciTech Connect

In order to prevent coke degradation without detrimentally affecting blast furnace service life, Dofasco initiated a project to improve coke strength after reaction. The results of the program and Dofasco's prediction model are presented. 9 refs., 12 figs., 9 tabs.

T.W. Todoschuk; J.P. Price; J.F. Gransden

2004-03-01T23:59:59.000Z

120

Accepted Manuscript Title: Fuel Pyrolysis through Porous Media: Coke Formation  

E-Print Network (OSTI)

Accepted Manuscript Title: Fuel Pyrolysis through Porous Media: Coke Formation and Coupled effect. Gascoin, P. Gillard, M. Bouchez, J. Steelant, Fuel Pyrolysis through Porous Media: Coke Formation Coke Formation and Coupled effect on Permeability2 G. Fau1* , N. Gascoin1 , P. Gillard1 , M. Bouchez2

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Working Paper No. 789 ESTIMATING COKE AND PEPSI'S PRICE  

E-Print Network (OSTI)

Working Paper No. 789 ESTIMATING COKE AND PEPSI'S PRICE AND ADVERTISING STRATEGIES (formerly Estimating Firms'Mixed Price and Advertising Strategies: Coke and Pepsi) by Amos Golan, Larry S. Karp. #12;Estimating Coke and Pepsi's Price and Advertising Strategies Amos Golan* Larry S. Karp** Jeffrey M

Karp, Larry S.

122

New Design Methods And Algorithms For High Energy-Efficient And Low-cost Distillation Processes  

SciTech Connect

This project sought and successfully answered two big challenges facing the creation of low-energy, cost-effective, zeotropic multi-component distillation processes: first, identification of an efficient search space that includes all the useful distillation configurations and no undesired configurations; second, development of an algorithm to search the space efficiently and generate an array of low-energy options for industrial multi-component mixtures. Such mixtures are found in large-scale chemical and petroleum plants. Commercialization of our results was addressed by building a user interface allowing practical application of our methods for industrial problems by anyone with basic knowledge of distillation for a given problem. We also provided our algorithm to a major U.S. Chemical Company for use by the practitioners. The successful execution of this program has provided methods and algorithms at the disposal of process engineers to readily generate low-energy solutions for a large class of multicomponent distillation problems in a typical chemical and petrochemical plant. In a petrochemical complex, the distillation trains within crude oil processing, hydrotreating units containing alkylation, isomerization, reformer, LPG (liquefied petroleum gas) and NGL (natural gas liquids) processing units can benefit from our results. Effluents from naphtha crackers and ethane-propane crackers typically contain mixtures of methane, ethylene, ethane, propylene, propane, butane and heavier hydrocarbons. We have shown that our systematic search method with a more complete search space, along with the optimization algorithm, has a potential to yield low-energy distillation configurations for all such applications with energy savings up to 50%.

Agrawal, Rakesh

2013-11-21T23:59:59.000Z

123

Gulf Coast Distillate Production  

Gasoline and Diesel Fuel Update (EIA)

4 of 15 4 of 15 Notes: PADD 3 is a major source of supply for the East Coast. This graph shows how during the winter of 1997-1998 when distillate stocks were very high, production fell back. In contrast, we entered the winter of 1996-1997 with very low stocks, and refineries reached record production levels as they tried to build stocks late in the season. Notice that production is normally reduced in January as distillate stocks are used to meet demand and as refineries begin maintenance and turnovers, which continue into February. This January is no different. There is room for some production increases in January and February, if refineries postpone maintenance. But postponing maintenance and turnarounds can create problems when the gasoline production season begins in March and April.

124

Low Energy Distillation Schemes  

E-Print Network (OSTI)

an important means of reducing energy consumption in distillation processes. However, its conventional use requires the installation of piping (and pipes carrying vapour streams tend to be of large diameter and are consequently expensive). So, finally we.... However, its conventional use requires the installation of piping (and pipes carrying vapour streams tend to be of large diameter and are consequently expensive). In the late eighties engineers in Germany [e.g. Kaibel, 1987] looked at one way in which...

Polley, G. T.

125

Influence of the coking properties of coal batch on coke properties  

Science Journals Connector (OSTI)

At OAO Zapadno-Sibirskii Metallurgicheskii Kombinat (ZSMK), research is undertaken to improve the optimization of coking batch. The basic approach, proposed by...K opt..., which characterizes the ...

D. A. Zavalishin; L. S. Belaya; G. R. Gainieva; V. G. Lupenko

2009-10-01T23:59:59.000Z

126

Water protection in coke-plant design  

SciTech Connect

Wastewater generation, water consumption, and water management at coke plants are considered. Measures to create runoff-free water-supply and sewer systems are discussed. Filters for water purification, corrosion inhibitors, and biocides are described. An integrated single-phase technology for the removal of phenols, thiocyanides, and ammoniacal nitrogen is outlined.

G.I. Alekseev [Giprokoks, the State Institute for the Design of Coke-Industry Enterprises, Kharkov (Ukraine)

2009-07-15T23:59:59.000Z

127

Reducing dust emissions at OAO Alchevskkoks coke battery 10A  

SciTech Connect

Coke battery 10A with rammed batch is under construction at OAO Alchevskkoks. The design documentation developed by Giprokoks includes measures for reducing dust emissions to the atmosphere. Aspiration systems with dry dust trapping are employed in the new components of coke battery 10A and in the existing coke-sorting equipment. Two-stage purification of dusty air in cyclones and bag filters is employed for the coke-sorting equipment. This system considerably reduces coke-dust emissions to the atmosphere.

T.F. Trembach; E.N. Lanina [Giprokoks, the State Institute for the Design of Coke-Industry Enterprises, Kharkov (Ukraine)

2009-07-15T23:59:59.000Z

128

RESIDUA UPGRADING EFFICIENCY IMPROVEMENT MODELS: COKE FORMATION PREDICTABILITY MAPS  

SciTech Connect

The dispersed particle solution model of petroleum residua structure was used to develop predictors for pyrolytic coke formation. Coking Indexes were developed in prior years that measure how near a pyrolysis system is to coke formation during the coke formation induction period. These have been demonstrated to be universally applicable for residua regardless of the source of the material. Coking onset is coincidental with the destruction of the ordered structure and the formation of a multiphase system. The amount of coke initially formed appears to be a function of the free solvent volume of the original residua. In the current work, three-dimensional coke make predictability maps were developed at 400 C, 450 C, and 500 C (752 F, 842 F, and 932 F). These relate residence time and free solvent volume to the amount of coke formed at a particular pyrolysis temperature. Activation energies for two apparent types of zero-order coke formation reactions were estimated. The results provide a new tool for ranking residua, gauging proximity to coke formation, and predicting initial coke make tendencies.

John F. Schabron; A. Troy Pauli; Joseph F. Rovani Jr.

2002-05-01T23:59:59.000Z

129

Relation between the coking-chamber height, the coking pressure, and the packing density of regular or partially briquetted coal batch  

Science Journals Connector (OSTI)

Since coking coal is characterized by both elasticity and ductility in the plastic state, the coal charge of coke furnaces that contains a plastic layer exerts pressure (coking pressure) on the chamber walls. The...

L. V. Kopeliovich; V. I. Sukhorukov; V. I. Shvetsov

2012-07-01T23:59:59.000Z

130

Catalytic distillation : design and application of a catalytic distillation column.  

E-Print Network (OSTI)

??Catalytic Distillation (CD) is a hybrid technology that utilizes the dynamics of si- multaneous reaction and separation in a single process unit to achieve a… (more)

Nieuwoudt, Josias Jakobus (Jako)

2005-01-01T23:59:59.000Z

131

REDUCING POWER PRODUCTION COSTS BY UTILIZING PETROLEUM COKE  

SciTech Connect

Petroleum coke, a byproduct of the petroleum-refining process, is an attractive primary or supplemental fuel for power production primarily because of a progressive and predictable increase in the production volumes of petroleum coke (1, 2). Petroleum coke is most commonly blended with coal in proportions suitable to meet sulfur emission compliance. Petroleum coke is generally less reactive than coal; therefore, the cofiring of petroleum coke with coal typically improves ignition, flame stability, and carbon loss relative to the combustion of petroleum coke alone. Although petroleum coke is a desirable fuel for producing relatively inexpensive electrical power, concerns about the effects of petroleum coke blending on combustion and pollution control processes exist in the coal-fired utility industry (3). The Energy & Environmental Research Center (EERC) completed a 2-year technical assessment of petroleum coke as a supplemental fuel. A survey questionnaire was sent to seven electric utility companies that are currently cofiring coal and petroleum coke in an effort to solicit specific suggestions on research needs and fuel selections. An example of the letter and survey questionnaire is presented in Appendix A. Interest was expressed by most utilities in evaluating the effects of petroleum coke blending on grindability, combustion reactivity, fouling, slagging, and fly ash emissions control. Unexpectedly, concern over corrosion was not expressed by the utilities contacted. Although all seven utilities responded to the question, only two utilities, Northern States Power Company (NSP) and Ameren, sent fuels to the EERC for evaluation. Both utilities sent subbituminous coals from the Power River Basin and petroleum shot coke samples. Petroleum shot coke is produced unintentionally during operational upsets in the petroleum refining process. This report evaluates the effects of petroleum shot coke blending on grindability, fuel reactivity, fouling/slagging, and electrostatic precipitator (ESP) fly ash collection efficiency.

Kevin C. Galbreath; Donald L. Toman; Christopher J. Zygarlicke

1999-09-01T23:59:59.000Z

132

A Characterization and Evaluation of Coal Liquefaction Process Streams. Results of Inspection Tests on Nine Coal-Derived Distillation Cuts in the Jet Fuel Boiling Range  

SciTech Connect

This report describes the assessment of the physical and chemical properties of the jet fuel (180-300 C) distillation fraction of nine direct coal liquefaction products and compares those properties to the corresponding specifications for aviation turbine fuels. These crude coal liquids were compared with finished fuel specifications specifically to learn what the refining requirements for these crudes will be to make them into finished fuels. The properties of the jet fuel fractions were shown in this work to require extensive hydrotreating to meet Jet A-1 specifications. However, these materials have a number of desirable qualities as feedstocks for the production of high energy-density jet fuels.

S. D. Brandes; R. A. Winschel

1999-12-30T23:59:59.000Z

133

Catalytic distillation extends its reach  

SciTech Connect

Since the early 1980s, catalytic distillation processes have been selected by more than a hundred operators for various applications. Since such a unit performs both reaction and distillation simultaneously, a combined column can replace a separate, fixed-bed reactor and distillation column, thereby eliminating equipment and reducing capital costs. And, compared to the conventional approach, catalytic distillation may also improve other factors, such as reactant conversion, selectivity, mass transfer, operating pressure, oligomer formation and catalyst fouling. The constant washing of the catalyst by liquid flowing down the column and the distillation of high-boiling foulants results in extended catalyst life. Four selective hydrogenation applications of catalytic distillation are discussed: Butadiene selective hydrogenation combined within an MTBE unit; Pentadiene selective hydrogenation; C{sub 4} acetylene conversion; and Benzene saturation.

Rock, K.; McGuirk, T. [Catalytic Distillation Technologies, Houston, TX (United States); Gildert, G.R. [Catalytic Distillation Technologies, Pasadena, TX (United States)

1997-07-01T23:59:59.000Z

134

Energy efficiency improvement and cost saving opportunities for petroleum refineries  

E-Print Network (OSTI)

Hydrocracking Hydrotreating Alkylation Polymerization/Dim.i.e. , crude distillation, hydrotreating, reforming, vacuumin an increase of hydrotreating capacity at the petroleum

Worrell, Ernst; Galitsky, Christina

2005-01-01T23:59:59.000Z

135

REDUCING POWER PRODUCTION COSTS BY UTILIZING PETROLEUM COKE  

SciTech Connect

A Powder River Basin subbituminous coal from the North Antelope mine and a petroleum shot coke were received from Northern States Power Company (NSP) for testing the effects of parent fuel properties on coal-coke blend grindability and evaluating the utility of petroleum coke blending as a strategy for improving electrostatic precipitator (ESP) particulate collection efficiency. Petroleum cokes are generally harder than coals, as indicated by Hardgrove grindability tests. Therefore, the weaker coal component may concentrate in the finer size fractions during the pulverizing of coal-coke blends. The possibility of a coal-coke size fractionation effect is being investigated because it may adversely affect combustion performance. Although the blending of petroleum coke with coal may adversely affect combustion performance, it may enhance ESP particulate collection efficiency. Petroleum cokes contain much higher concentrations of V relative to coals. Consequently, coke blending can significantly increase the V content of fly ash resulting from coal-coke combustion. Pentavalent vanadium oxide (V{sub 2}O{sub 5}) is a known catalyst for transforming gaseous sulfur dioxide (SO{sub 2}[g]) to gaseous sulfur trioxide (SO{sub 3}[g]). The presence of SO{sub 3}(g) strongly affects fly ash resistivity and, thus, ESP performance.

NONE

1998-09-01T23:59:59.000Z

136

Parametric and kinetic studies on deactivation and regeneration of hydrotreating catalysts in solvent refined coal upgrading process and an evaluation of the liquid vaporization effects on hydrotreater performance  

SciTech Connect

Catalysts used in hydrotreating the solvent refined coal were rapidly deactivated during the initial stages of processing. The major cause of deactivation appears to be the deposition of carbonaceous material on the catalyst. A simulated aging technique involving a series of reactions on the same batch of catalyst and a model compound activity test were developed and used to study the effects of process conditions, feedstock characteristics, catalyst properties, and catalyst pretreatment on initial catalyst deactivation. The variables shown to increase the rate of deactivation are: increased catalyst loading, high reaction temperature, low hydrogen pressure, unsulfiding the catalyst, and high concentrations of preasphaltenes and insoluble organic matter in the feedstock. The loss in catalyst surface area during the aging process was substantial, being as high as 95%. A simple kinetic model, including a first-order catalyst deactivation rate, was applied to upgrading of two-coal derived feedstocks. A catalyst deactivation mechanism was proposed which involves the adsorption and surface reaction of coke precursors on catalytic active sites. Catalyst regeneration of aged catalysts from the LC-Finer and the ITSL process has been accomplished through oxidative treatment followed by presulfiding. A parametric study has been performed to identify the optimum regeneration conditions. The degree of regeneration appears to be dependent on the feed material and reaction history of the catalyst. Liquid vaporization affects the hydrotreater performance significantly. The hydrotreater is simulated to study the effects of the solvent volatility, hydrogen flow rate, feed concentration, temperature, and pressure. A gradientless reactor system was designed, built, and used to verify the key result ofthe simulation study.

Nalitham, R.V.

1983-01-01T23:59:59.000Z

137

Table 16. U.S. Coke Exports  

U.S. Energy Information Administration (EIA) Indexed Site

U.S. Coke Exports U.S. Coke Exports (short tons) U.S. Energy Information Administration | Quarterly Coal Report, April - June 2013 Table 16. U.S. Coke Exports (short tons) U.S. Energy Information Administration | Quarterly Coal Report, April - June 2013 Year to Date Continent and Country of Destination April - June 2013 January - March 2013 April - June 2012 2013 2012 Percent Change North America Total 162,796 79,217 201,795 242,013 340,944 -29.0 Canada* 73,859 17,837 112,348 91,696 161,596 -43.3 Mexico 88,535 60,517 86,721 149,052 176,163 -15.4 Other** 402 863 2,726 1,265 3,185 -60.3 South America Total 223 217 591 440 1,158 -62.0 Other** 223 217 591 440 1,158 -62.0 Europe Total 48,972 59,197 - 108,169 6 NM Other** 347 11,743 - 12,090 - - United Kingdom 48,625 47,454 - 96,079 6 NM Asia Total 317 553 633 870 4,778

138

Table 21. U.S. Coke Imports  

U.S. Energy Information Administration (EIA) Indexed Site

U.S. Coke Imports U.S. Coke Imports (short tons) U.S. Energy Information Administration | Quarterly Coal Report, April - June 2013 Table 21. U.S. Coke Imports (short tons) U.S. Energy Information Administration | Quarterly Coal Report, April - June 2013 Year to Date Continent and Country of Origin April - June 2013 January - March 2013 April - June 2012 2013 2012 Percent Change North America Total 10,284 2,293 159,462 12,577 183,712 -93.2 Canada 3,009 2,293 159,462 5,302 183,712 -97.1 Panama 7,275 - - 7,275 - - South America Total 25,267 13,030 88,424 38,297 106,612 -64.1 Brazil - - 78,595 - 78,595 - Colombia 25,267 13,030 9,829 38,297 28,017 36.7 Europe Total 6,044 40,281 165,027 46,325 485,791 -90.5 Czech Republic - 170 - 170 - - Spain 363 - - 363 - - Ukraine 5,681 40,111 5,047 45,792 53,543 -14.5 United Kingdom

139

Coking properties of perhydrous low-rank vitrains. Influence of pyrolysis conditions  

E-Print Network (OSTI)

generally lead to increased coking potential of coals characterised in the resulting cokes by large sizes equivalent to natural coking coals, since the cokes from these residues are always made of smaller MOD than those obtained for coking coals. For comparison, a similar characterisation, carried out

Paris-Sud XI, Université de

140

Multivessel Batch Distillation -Potential Energy Savings  

E-Print Network (OSTI)

Multivessel Batch Distillation - Potential Energy Savings Bernd Wittgens and Sigurd Skogestad 1, Norway ABSTRACT - A conventional batch distillation column operated under feedback control applying the proposed policy is compared to the multivessel batch distillation column. In some cases we found

Skogestad, Sigurd

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Effect of bulk density of coking coal on swelling pressure  

Science Journals Connector (OSTI)

Abstract Coking coals are the important raw materials for the iron and steel industries and play an important role on its sustainable development, especially on the stamp-charging coke making with the characteristics of increasing the bulk density. There is a significance on the reasonable usage of the coking coal resource with the reduced production cost, improved efficiency of the economy to develop the stamp-charging coke making technology. Important effects of the density of coking coal on the coking and caking properties were investigated. In the article, the maximum values of swelling pressure and variation of Laowan gas coal and Xinjian 1/3 coking coal, Longhu fat coal and Didao coking coal, which were mined at Shenyang and Qitaihe respectively, were investigated under different bulk densities during the coking. The results showed that when the values of density increased from 0.85 ton/m3 to 1.05 ton/m3, for the Laowan gas coal, swelling pressure variation and even the maximum value changed slightly. The swelling pressure was 3.63 \\{KPa\\} when the density was improved to 1.05 ton/m3; for the Xinjian 1/3 coking coal, the values of swelling pressure changed significantly and the maximum values was 82.88 \\{KPa\\} with the density improved to 1.05 when the coal was heated to 600°C. The coke porosity, which was investigated by automatic microphotometer, decreased from 47.4% to 33.1% with the increasing of the density from 0.85 ton/m3 to 1.05 ton/m3, and the decreased value was 14.3%. Meanwhile, the pore structures of four cokes were characterized by an optical microscope.

Jinfeng Bai; Chunwang Yang; Zhenning Zhao; Xiangyun Zhong; Yaru Zhang; Jun Xu; Bai Xi; Hongchun Liu

2013-01-01T23:59:59.000Z

142

Coke profile and effect on methane/ethylene conversion process.  

E-Print Network (OSTI)

??The objective of this study was to investigate the coke profile with respect to time on stream and the change of product distribution due to… (more)

Al-Solami, Bandar

2012-01-01T23:59:59.000Z

143

Modélisation thermomécanique d'un piédroit de four à coke.  

E-Print Network (OSTI)

??Inscrite dans le cadre du projet européen Coke Oven Operating Limits, cette thèse porte sur la modélisation thermomécanique d'un piédroit de cokerie. Le piédroit est… (more)

Landreau, Matthieu

2009-01-01T23:59:59.000Z

144

The methods of steam coals usage for coke production  

SciTech Connect

Nowadays, high volatile bituminous coals are broadly used for metallurgical coke production in Russia. The share of such coals in the coking blend is variable from 20 to 40% by weight. There are some large coal deposits in Kuznetskii basin which have coals with low caking tendency. The low caking properties of such coals limit of its application in the coking process. At the same time the usage of low caking coals for coke production would allow flexibility of the feedstock for coke production. Preliminary tests, carried out in COAL-C's lab has shown some differences in coal properties with dependence on the size distribution. That is why the separation of the well-caking fraction from petrographically heterogeneous coals and its further usage in coking process may be promising. Another way for low caking coals application in the coke industry is briquettes production from such coals. This method has been known for a very long time. It may be divided into two possible directions. First is a direct coking of briquettes from the low caking coals. Another way is by adding briquettes to coal blends in defined proportion and combined coking. The possibility of application of coal beneficiation methods mentioned above was investigated in present work.

Korobetskii, I.A.; Ismagilov, M.S.; Nazimov, S.A.; Sladkova, I.L.; Shudrikov, E.S.

1998-07-01T23:59:59.000Z

145

Reducing power production costs by utilizing petroleum coke. Annual report  

SciTech Connect

A Powder River Basin subbituminous coal from the North Antelope mine and a petroleum shot coke were received from Northern States Power Company (NSP) for testing the effects of parent fuel properties on coal-coke blend grindability and evaluating the utility of petroleum coke blending as a strategy for improving electrostatic precipitator (ESP) particulate collection efficiency. Petroleum cokes are generally harder than coals, as indicated by Hardgrove grindability tests. Therefore, the weaker coal component may concentrate in the finer size fractions during the pulverizing of coal-coke blends. The possibility of a coal-coke size fractionation effect is being investigated because it may adversely affect combustion performance, it may enhance ESP particulate collection efficiency. Petroleum cokes contain much higher concentrations of V relative to coals. Consequently, coke blending can significantly increase the V content of fly ash resulting from coal-coke combustion. Pentavalent vanadium oxide (V{sub 2}O{sub 5}) is a known catalyst for transforming gaseous sulfur dioxide (SO{sub 2}[g]) to gaseous sulfur trioxide (SO{sub 3}[g]). The presence of SO{sub 3}(g) strongly affects fly ash resistivity and, thus, ESP performance.

Galbreath, K.C.

1998-07-01T23:59:59.000Z

146

Nippon Coke and Engineering Sumitomo Corp JV | Open Energy Information  

Open Energy Info (EERE)

navigation, search Name: Nippon Coke and Engineering & Sumitomo Corp JV Place: Tokyo, Japan Zip: 135-6007 Product: Japan-based natural graphite base anode materials joint...

147

Theoretical and experimental investigation of membrane distillation.  

E-Print Network (OSTI)

??Invented in the 1960s, membrane distillation is an emerging technology for water treatment attracting more attention since 1980s. There are four configurations of membrane distillations… (more)

Zhang, Jianhua

2011-01-01T23:59:59.000Z

148

Oil recovery from condensed corn distillers solubles.  

E-Print Network (OSTI)

??Condensed corn distillers solubles (CCDS) contains more oil than dried distillers grains with solubles (DDGS), 20 vs. 12% (dry weight basis). Therefore, significant amount of… (more)

Majoni, Sandra

2009-01-01T23:59:59.000Z

149

Impact of Coal-Coking Effluent on Sediment Microbial Communities: a Multivariate Approach  

Science Journals Connector (OSTI)

...General Microbial Ecology Impact of Coal-Coking Effluent on Sediment Microbial...response to and recovery from coal-coking waste effluent was evaluated for...community response. Impact of coal-coking effluent on sediment microbial...

Gary S. Sayler; Timothy W. Sherrill; Richard E. Perkins; Lawrence M. Mallory; Michael P. Shiaris; Deana Pedersen

1982-11-01T23:59:59.000Z

150

Development of an Advanced Combined Heat and Power (CHP) System Utilizing Off-Gas from Coke Calcination  

Energy.gov (U.S. Department of Energy (DOE))

Coke calcination is a process that involves the heating of green petroleum coke in order to remove volatile material and purify the coke for further processing. Calcined coke is vital to the...

151

A novel technique for assessing the coking potential of coals/coal blends for non-recovery coke making process  

Science Journals Connector (OSTI)

Abstract In an effort to broaden the scope of coal selection, the authors have developed a novel procedure based on a coefficient, named as Composite Coking Potential (CCP). CCP value assesses the suitability of a coal/coal blend for producing coke of desired quality; measured by the parameter coke strength after reaction (CSR). The coking potential takes into account of various properties of the coals and their proportions in a given coal blend and convert them into a single value. This technique is having advantage since each of these parameters represents different aspects of the coking phenomena along with inter dependence of some of these parameters also exists. This makes the coal selection process extremely difficult and in majority of the cases, decision is taken based on experience. In this investigation, CCP model has been used for selecting the least expensive coal blends which will comply with the minimum coke quality requirements of blast furnace. The study confirms the inter relations between the CCP and the hot strength of coke i.e. CSR. Actual plant data of a non-recovery coke oven have been used for developing and validation of the model. The technique was successfully used in identifying cheaper coals for producing coke with desired quality.

H.P. Tiwari; P.K. Banerjee; V.K. Saxena

2013-01-01T23:59:59.000Z

152

DELAYED COKING OF SOLVENT EXTRACTED COAL FOR PRODUCTION OF ANODE GRADE COKE: CHARACTERIZATION OF SOLID AND LIQUID PRODUCTS.  

E-Print Network (OSTI)

??This study investigates the feasibility of using high temperature solvent extraction of coal to produce feedstock for the production of anode grade coke through delayed… (more)

Karri, Vamsi

2011-01-01T23:59:59.000Z

153

RELATION BETWEEN TEXTURE AND REACTIVITY IN METALLURGICAL COKES OBTAINED FROM COAL USING PETROLEUM COKE AS ADDITIVE  

E-Print Network (OSTI)

Reactivity to C O2 is, perhaps, the most importam quality parameter used to evaluate the performance of a metallurgical coke in the blast furnace [ 1]. A lot of effort has been made to study how it is influenced by the

J. J. Pis; J. A. Men~ndez; R. Alvarez; M. A. Diez; J. B. Parra

154

Coke Gasification - A Solution to Excess Coke Capacity and High Energy Costs  

E-Print Network (OSTI)

effectively to produce medium-Btu (300 Btu/scf) gas which, in turn, can fuel the refinery furnaces to replace natural gas. Coke gasification should prove economical with natural gas price decontrol and the average price projected to rise to over $14.0 per...

Patel, S. S.

1982-01-01T23:59:59.000Z

155

Dry purification of aspirational air in coke-sorting systems with wet slaking of coke  

SciTech Connect

Coke transportation after wet slaking is accompanied by the release of dust in the production building and in the surrounding atmosphere. Wet methods are traditionally used to purify very humid air. Giprokoks has developed designs for highly efficient dry dust-removal methods in such conditions.

T.F. Trembach; A.G. Klimenko [Giprokoks, the State Institute for the Design of Coke-Industry Enterprises, Kharkov (Ukraine)

2009-07-15T23:59:59.000Z

156

Adsorptive removal of nitrogen from coal-based needle coke feedstocks using activated carbon.  

E-Print Network (OSTI)

??A low percentage of nitrogen in needle coke feedstocks is desired for the reduction of puffing during the process of graphitization of needle coke. The… (more)

Madala, Sreeja.

2009-01-01T23:59:59.000Z

157

Prediction of Coke Quality in Ironmaking Process: A Data Mining Approach.  

E-Print Network (OSTI)

??Coke is an indispensable material in Ironmaking process by blast furnace. To provide good and constant quality coke for stable and efficient blast furance operation… (more)

Hsieh, Hsu-huang

2006-01-01T23:59:59.000Z

158

Optimal Control of Distillation Systems  

E-Print Network (OSTI)

The optimum performance of a distillation system can be evaluated by examining the product purities, the product recoveries, and the system's capability to respond to small or large, expected or unexpected, plant disturbances. An optimal control...

Chatterjee, N.; Suchdeo, S. R.

1984-01-01T23:59:59.000Z

159

,,"Distillate Fuel Oil(b)",,,"Alternative Energy Sources(c)"  

U.S. Energy Information Administration (EIA) Indexed Site

0.9 Relative Standard Errors for Table 10.9;" 0.9 Relative Standard Errors for Table 10.9;" " Unit: Percents." ,,"Distillate Fuel Oil(b)",,,"Alternative Energy Sources(c)" ,,,,,,,,,,"Coal Coke" "NAICS"," ","Total"," ","Not","Electricity","Natural","Residual",,,"and" "Code(a)","Subsector and Industry","Consumed(d)","Switchable","Switchable","Receipts(e)","Gas","Fuel Oil","Coal","LPG","Breeze","Other(f)" ,,"Total United States" 311,"Food",8,15,9,21,19,18,0,27,0,41 311221," Wet Corn Milling",0,0,0,0,0,0,0,0,0,0

160

Distillation process using microchannel technology  

DOE Patents (OSTI)

The disclosed invention relates to a distillation process for separating two or more components having different volatilities from a liquid mixture containing the components. The process employs microchannel technology for effecting the distillation and is particularly suitable for conducting difficult separations, such as the separation of ethane from ethylene, wherein the individual components are characterized by having volatilities that are very close to one another.

Tonkovich, Anna Lee (Dublin, OH); Simmons, Wayne W. (Dublin, OH); Silva, Laura J. (Dublin, OH); Qiu, Dongming (Carbondale, IL); Perry, Steven T. (Galloway, OH); Yuschak, Thomas (Dublin, OH); Hickey, Thomas P. (Dublin, OH); Arora, Ravi (Dublin, OH); Smith, Amanda (Galloway, OH); Litt, Robert Dwayne (Westerville, OH); Neagle, Paul (Westerville, OH)

2009-11-03T23:59:59.000Z

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Quantum universality by state distillation  

E-Print Network (OSTI)

Quantum universality can be achieved using classically controlled stabilizer operations and repeated preparation of certain ancilla states. Which ancilla states suffice for universality? This "magic states distillation" question is closely related to quantum fault tolerance. Lower bounds on the noise tolerable on the ancilla help give lower bounds on the tolerable noise rate threshold for fault-tolerant computation. Upper bounds show the limits of threshold upper-bound arguments based on the Gottesman-Knill theorem. We extend the range of single-qubit mixed states that are known to give universality, by using a simple parity-checking operation. For applications to proving threshold lower bounds, certain practical stability characteristics are often required, and we also show a stable distillation procedure. No distillation upper bounds are known beyond those given by the Gottesman-Knill theorem. One might ask whether distillation upper bounds reduce to upper bounds for single-qubit ancilla states. For multi-qubit pure states and previously considered two-qubit ancilla states, the answer is yes. However, we exhibit two-qubit mixed states that are not mixtures of stabilizer states, but for which every postselected stabilizer reduction from two qubits to one outputs a mixture of stabilizer states. Distilling such states would require true multi-qubit state distillation methods.

Ben W. Reichardt

2006-08-09T23:59:59.000Z

162

Effects of preheating and highly heat-conductive brick on coke quality  

SciTech Connect

In replacing the coke ovens available currently, the introduction of a combined technique of a preheated coal charging method (preheating temperature:175 C) and the use of highly heat-conductive brick is under examination for raising the productivity of coke ovens. With such background, a study of the effects of this combined technique on the coke quality, especially the coke size was conducted. The experimental results revealed that the primary size of coke produced by the combined technique is noticeably larger than that of the coke made from wet coal and after five revolutions of drum (equivalent to mechanical impact given at a time of dropping from coke oven chamber to wharf), the coke size reduces even compared with an ordinary coke. This may be due to the fact that the coke produced by the combined technique includes a lot of fissures inside the coke lump.

Fukuda, K.; Arima, T. [Nippon Steel Corp., Chiba (Japan). Process Technology, Research Labs.

1995-12-31T23:59:59.000Z

163

The effects of gas-to-oil rate in ultra low sulfur diesel hydrotreating  

Science Journals Connector (OSTI)

Hydrotreating has become a critical refining process as fuel sulfur specifications are tightened around the world. Recently, refiners in the United States have been learning how to optimize the performance of ultra low sulfur diesel (ulsd) hydrotreaters. The gas-to-oil feed rate ratio is known to be an important variable in this respect. It is well known that the gas-to-oil rate must be kept high enough to maintain the desired hydrogen partial pressure through the hydrotreating reactor, and to minimize the inhibiting effect of hydrogen sulfide. A lesser-known effect is the effect of gas-to-oil rate on the vapor–liquid equilibrium in the reactor. Changing the gas-to-oil rate alters the distribution of reactants between vapor and liquid in a way that changes the relative reaction rates of different sulfur compounds. This paper presents some pilot plant data and analysis showing this effect of phase equilibrium in deep diesel desulfurization. The effect can be modeled using the Frye–Mosby equation, which accounts for the effects of feed vaporization and phase equilibrium on the reaction rates of individual sulfur compounds in a trickle bed hydrotreater.

George Hoekstra

2007-01-01T23:59:59.000Z

164

Research on the evolvement of morphology of coking coal during the coking process  

Science Journals Connector (OSTI)

Abstract The evolvement of morphology and structure of the coal with different metamorphic degrees during coking process in the vertical furnace was investigated by infrared Image detector. Moreover, the temperature distribution in the radial direction and the crack formation were also studied in heating process. The results show that the amount of crack and the shrinkage level of char decrease with the coal rank rising. In addition, the initial temperature of crack formation for char increases with the coal rank rising.

Xiangyun Zhong; Shiyong Wu; Yang Liu; Zhenning Zhao; Yaru Zhang; Jinfeng Bai; Jun Xu; Bai Xi

2013-01-01T23:59:59.000Z

165

Coke formation during pyrolysis of 1,2-dichloroethane  

SciTech Connect

Most processes involving hydrocarbons or carbon oxides at high temperatures suffer from the disadvantage of coke formation. The formation of coke deposits during pyrolysis of hydrocarbons or chlorinated hydrocarbons is of significant practical importance. Examples of such processes are the steam cracking of alkanes to produce olefins and the thermal decomposition of 1,2-dichloroethane (EDC) for the production of vinyl chloride monomer (VCM). Even id the rate of coke production is low, the cumulative nature of the solid product will result in reactor fouling. The present work deals with the thermal decomposition of EDC. Coke formation has been studied on metal surfaces in a quartz tubular reactor. The rate of coke deposition was measures on metal foils hanging from one arm of a microbalance. A complete analysis of the product gas was accomplished using on-line gas chromatography. The results show that coke deposition during thermal decomposition of EDC depends on the composition of the feed as well as on the nature of the surface of the metal foil. Small amounts of other components (contamination with other chlorinated hydrocarbons as an example) may have a large influence on the rate of coke formation. The results are discussed in terms of surface composition/morphology of the metal foil and the free radical mechanism for thermal decomposition of FDC.

Holmen, A. [Norwegian Institute of Technology, Trondheim (Norway); Lindvag, O.A. [SINTEF Applied Chemistry, Trondheim (Norway)

1995-12-31T23:59:59.000Z

166

Coke mineral transformations in the experimental blast furnace  

SciTech Connect

Blast furnace efficiency may be improved by optimizing coke reactivity. Some but not all forms of mineral matter in the coke modify its reactivity, but changes in mineral matter that occur within coke while in the blast furnace have not been fully quantified. To determine changes in mineral matter forms in the blast furnace, coke samples from a dissection study in the LKAB experimental blast furnace (EBF) were characterized using SEM/EDS analysis, EPMA (microprobe), and low-temperature ashing/quantitative XRD analysis. Variations in alkali concentration, particularly potassium, dominated the compositional changes. At high concentrations of potassium, the mineral matter was largely potassium-bearing but even more potassium was diffused throughout the coke and not associated with mineral matter. There was little difference in potassium concentration between the core and surface of the coke pieces, suggesting that potassium diffused rapidly through the whole coke. Iron, calcium, silicon, and aluminum concentrations were relatively constant in comparison, although the mineralogy of all elements changed significantly with changing temperature. 23 refs., 20 figs., 9 tabs.

Kelli Kazuberns; Sushil Gupta; Mihaela Grigore; David French; Richard Sakurovs; Mats Hallin; Bo Lindblom; Veena Sahajwalla [University of New South Wales, Sydney, NSW (Australia). Cooperative Research Centre for Coal in Sustainable Development (CCSD)

2008-09-15T23:59:59.000Z

167

"Code(a)","End Use","Electricity(b)","Fuel Oil","Diesel Fuel(c)"," Gas(d)","NGL(e)","Coke and Breeze)"  

U.S. Energy Information Administration (EIA) Indexed Site

3 Relative Standard Errors for Table 5.3;" 3 Relative Standard Errors for Table 5.3;" " Unit: Percents." " "," " " "," ",," ","Distillate"," "," " " "," ","Net Demand",,"Fuel Oil",,,"Coal" "NAICS"," ","for ","Residual","and","Natural","LPG and","(excluding Coal" "Code(a)","End Use","Electricity(b)","Fuel Oil","Diesel Fuel(c)"," Gas(d)","NGL(e)","Coke and Breeze)" ,,"Total United States" " 311 - 339","ALL MANUFACTURING INDUSTRIES" ,"TOTAL FUEL CONSUMPTION",2,3,6,2,4,9

168

PPMCSA Presentation on Winter Distillate Outlook  

Gasoline and Diesel Fuel Update (EIA)

PPMCSA Presentation on Winter Distillate Outlook PPMCSA Presentation on Winter Distillate Outlook 09/15/2000 Click here to start Table of Contents Winter Distillate Outlook Distillate Prices Increasing With Crude Oil Factors Driving Prices & Forecast First Factor Impacting Distillate Prices: Crude Oil Prices High Crude Prices Go With Low Inventories Second Price Component: Spread Impacted by Distillate Supply/Demand Balance Distillate Stocks are Low – Especially on the East Coast Distillate Stocks Are Important Part of East Coast Winter Supply Winter Demand Impacted by Weather Warm Winters Held Heating Oil Demand Down While Diesel Grew Distillate Demand Strong in December 1999 Dec 1999 & Jan 2000 Production Fell, But Rebounded with Price Higher Yields Can Be Achieved Unusual Net Imports May Only Be Available at a High Price

169

Surveyor: A System for Generating Coherent Survey Articles for Scientific Topics Rahul Jha and Reed Coke  

E-Print Network (OSTI)

Coke Department of EECS University of Michigan Ann Arbor, MI, 48109 Dragomir Radev Department of EECS

Radev, Dragomir R.

170

Variation in coke properties within the blast-furnace shop  

SciTech Connect

In active production at OAO Magnitogorskii Metallurgicheskii Kombinat (MMK), samples of melt materials were taken during shutdown and during planned repairs at furnaces 1 and 8. In particular, coke was taken from the tuyere zone at different distances from the tuyere tip. The mass of the point samples was 2-15 kg, depending on the sampling zone. The material extracted from each zone underwent magnetic separation and screening by size class. The resulting coke sample was averaged out and divided into parts: one for determining the granulometric composition and mechanical strength; and the other for technical analysis and determination of the physicochemical properties of the coke.

E.N. Stepanov; I.I. Mel'nikov; V.P. Gridasov; A.A. Stepanova [OAO Magnitogorskii Metallurgicheskii Kombinat (MMK), Magnitogorsk, (Russian Federation)

2009-04-15T23:59:59.000Z

171

U.S. Distillate Market  

Gasoline and Diesel Fuel Update (EIA)

diesel and heating fuel prices diesel and heating fuel prices surged. The largest increases occurred in the distillate-based fuels (heating oil and diesel) in the Northeast. The main factors driving up these prices were low stocks leading into January, followed by a bout of severe weather that impacted both supply and demand. Warmer weather and the arrival of new supply, mainly imports, relieved the supply/demand imbalance and brought prices back down. The spike is now behind us, but high crude prices are keeping prices above year-ago levels. The low stock situation that set the stage for the distillate price spike was not unique to the United States, Low stocks exist worldwide and are not limited to distillate. The low stock situation stems from what is happening in the crude oil markets. A crude oil supply shortage drove crude

172

Optimal protocols for nonlocality distillation  

SciTech Connect

Forster et al. recently showed that weak nonlocality can be amplified by giving the first protocol that distills a class of nonlocal boxes (NLBs) [Phys. Rev. Lett. 102, 120401 (2009)] We first show that their protocol is optimal among all nonadaptive protocols. We next consider adaptive protocols. We show that the depth-2 protocol of Allcock et al. [Phys. Rev. A 80, 062107 (2009)] performs better than previously known adaptive depth-2 protocols for all symmetric NLBs. We present a depth-3 protocol that extends the known region of distillable NLBs. We give examples of NLBs for which each of the Forster et al., the Allcock et al., and our protocols perform best. The understanding we develop is that there is no single optimal protocol for NLB distillation. The choice of which protocol to use depends on the noise parameters for the NLB.

Hoeyer, Peter; Rashid, Jibran [Department of Computer Science, University of Calgary, 2500 University Drive N.W., Calgary, Alberta, 2N 1N4 (Canada)

2010-10-15T23:59:59.000Z

173

Entanglement distillation using particle statistics  

E-Print Network (OSTI)

We extend the idea of entanglement concentration for pure states(Phys. Rev. Lett. {\\bf 88}, 187903) to the case of mixed states. The scheme works only with particle statistics and local operations, without the need of any other interactions. We show that the maximally entangled state can be distilled out when the initial state is pure, otherwise the entanglement of the final state is less than one. The distillation efficiency is a product of the diagonal elements of the initial state, it takes the maximum 50%, the same as the case for pure states.

H. L. Huang; L. H. Cheng; X. X. Yi

2005-10-25T23:59:59.000Z

174

Bounds for nonlocality distillation protocols  

SciTech Connect

Nonlocality can be quantified by the violation of a Bell inequality. Since this violation may be amplified by local operations, an alternative measure has been proposed--distillable nonlocality. The alternative measure is difficult to calculate exactly due to the double exponential growth of the parameter space. In this paper, we give a way to bound the distillable nonlocality of a resource by the solutions to a related optimization problem. Our upper bounds are exponentially easier to compute than the exact value and are shown to be meaningful in general and tight in some cases.

Forster, Manuel [Computer Science Department, ETH Zuerich, CH-8092 Zuerich (Switzerland)

2011-06-15T23:59:59.000Z

175

Graphitized needle cokes and natural graphites for lithium intercalation  

SciTech Connect

This paper examined effects of heat treatment and milling (before or after heat treatment) on the (electrochemical) intercalating ability of needle petroleum coke; natural graphite particles are included for comparison. 1 tab, 4 figs, 7 refs.

Tran, T.D.; Spellman, L.M.; Pekala, R.W. [Lawrence Livermore National Lab., CA (United States); Goldberger, W.M. [Superior Graphite Co., Chicago, IL (United States); Kinoshita, K. [Lawrence Berkeley National Lab., CA (United States)

1996-05-10T23:59:59.000Z

176

Co-gasification of petroleum coke and biomass  

Science Journals Connector (OSTI)

Abstract Gasification may be an attractive alternative for converting heavy oil residue – petroleum coke into valuable synthetic gas. Due to the low reactivity of petroleum coke, it is maybe preferable to convert it in combination with other fuels such as biomass. Co-gasification of petroleum coke and biomass was studied in an atmospheric bubbling fluidised bed reactor and a thermogravimetric analyser (TGA) at KTH Royal University of Technology. Biomass ash in the blends was found to have a catalytic effect on the reactivity of petroleum coke during co-gasification. Furthermore, this synergetic effect between biomass and petcoke was observed in the kinetics data. The activation energy Ea determined from the Arrhenius law for pure petcoke steam gasification in the TGA was 121.5 kJ/mol, whereas for the 50/50 mixture it was 96.3, and for the 20/80 blend – 83.5 kJ/mol.

Vera Nemanova; Araz Abedini; Truls Liliedahl; Klas Engvall

2014-01-01T23:59:59.000Z

177

Variation in mineral composition of coal during enrichment and coking  

Science Journals Connector (OSTI)

The parameters I b and B b used in developing an optimal coking-batch composition are determined from data on ... of the ash in Donetsk Basin and other coal. It is found that, when...

M. L. Ulanovskii; A. N. Likhenko

2009-06-01T23:59:59.000Z

178

Coking properties of coal pitch in coal batch  

Science Journals Connector (OSTI)

The coking properties of coal pitch depend significantly on its fractional composition, ... : 2: 2. This is typical of coal pitch with a softening temperature of 75– ... Such pitch is the best clinkering additive...

S. G. Gagarin; Yu. I. Neshin

2011-09-01T23:59:59.000Z

179

Coal preparation, coking, and slaking in China and Japan  

Science Journals Connector (OSTI)

In China and Japan, measures have been developed to maintain constant coke quality and hence permit economical and stable blast-furnace operation with the injection of coal-dust fuel; and to reduce the cost of th...

I. F. Kurunov; P. V. Lizogub; O. V. Golubev

2010-09-01T23:59:59.000Z

180

Coking theory: Internal stress in the coal batch  

Science Journals Connector (OSTI)

The development of local internal stress in the coal batch is analyzed on the basis of ... theoretical and experimental data. Its influence on coke quality is demonstrated. The influence of mineralized ... large ...

V. I. Sukhorukov

2011-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Share a Coke - An Investigation of Social Media Marketing.  

E-Print Network (OSTI)

??This investigation examines the underlying factors behind audience participation in Coca-Cola’s ‘Share a Coke’ campaign, which became a trend on social media in Denmark in… (more)

Trougaard, Victor Frederic Wagn

2014-01-01T23:59:59.000Z

182

RESIDUA UPGRADING EFFICIENCY IMPROVEMENT MODELS: WRI COKING INDEXES  

SciTech Connect

Pyrolysis experiments were conducted with three residua at 400 C (752 F) at various residence times. The wt % coke and gaseous products were measured for the product oils. The Western Research Institute (WRI) Coking Indexes were determined for the product oils. Measurements were made using techniques that might correlate with the Coking Indexes. These included spin-echo proton nuclear magnetic resonance spectroscopy, heat capacity measurements at 280 C (536 F), and ultrasonic attenuation. The two immiscible liquid phases that form once coke formation begins were isolated and characterized for a Boscan residuum pyrolyzed at 400 C (752 F) for 55 minutes. These materials were analyzed for elemental composition (CHNS), porphyrins, and metals (Ni,V) content.

John F. Schabron; Joseph F. Rovani, Jr.; Francis P. Miknis; Thomas F. Turner

2003-06-01T23:59:59.000Z

183

Table 38. Coal Stocks at Coke Plants by Census Division  

U.S. Energy Information Administration (EIA) Indexed Site

Coal Stocks at Coke Plants by Census Division Coal Stocks at Coke Plants by Census Division (thousand short tons) U.S. Energy Information Administration | Quarterly Coal Report, April - June 2013 Table 38. Coal Stocks at Coke Plants by Census Division (thousand short tons) U.S. Energy Information Administration | Quarterly Coal Report, April - June 2013 Census Division June 30, 2013 March 31, 2013 June 30, 2012 Percent Change (June 30) 2013 versus 2012 Middle Atlantic w w w w East North Central 1,313 1,177 1,326 -1.0 South Atlantic w w w w East South Central w w w w U.S. Total 2,500 2,207 2,295 8.9 w = Data withheld to avoid disclosure. Note: Total may not equal sum of components because of independent rounding. Source: U.S. Energy Information Administration (EIA), Form EIA-5, 'Quarterly Coal Consumption and Quality Report - Coke Plants.'

184

SOURCE ACTIVITY TITLE: SOLID FUEL TRANSFORMATION PLANTS Coke Oven Furnaces Coke Oven (Door Leakage and Extinction) NOSE CODE: 104.12 NFR CODE:  

E-Print Network (OSTI)

1 ACTIVITIES INCLUDED Coke-production in general can be divided into the following steps: Coal handling and storage, coke oven charging, coal coking, extinction of coke, and coke oven gas purification. Combustion in coke oven furnaces (SNAP 010406) is treated in this chapter as well as door leakage and extinction (SNAP 040201). Figure 1-1 gives a key plan of a coke plant with emission relevant process steps and the byproduct recovery section. Figure 1-1: Key plan of a coke plant (Rentz et al. 1995) C o a l S lu d g e B l a s t F u r n a c e G a s f r o m S t e e l M il l A i r E m is s io n s G a s H o ld e r

Ic Activities; So Nox Nmv

185

Modeling the kinetics of parallel thermal and catalytic hydrotreating of heavy oil  

Science Journals Connector (OSTI)

Abstract A series of experiments were performed for obtaining the kinetics of the parallel thermal and catalytic hydrotreating reactions. The reactions considered were: hydrodesulfurization, hydrodenitrogenation (basic and non-basic), hydrodemetallization, hydrodeasphaltenization and hydro Conradson carbon removal. Hydrodesulfurization reaction was described by Langmuir–Hinshelwood kinetics while the other reactions were modeled with power-law approach. The tests were carried out in a CSTBR at the following conditions: 380–420 °C, 9.8 MPa, 891 std m3/m3 of hydrogen-to-oil ratio, 0.98–2.56 of g feed/(g cat h), and 200 h of time-on-stream. The developed kinetic model incorporates the effectiveness factor and a time-dependant deactivation function for obtaining the intrinsic kinetic parameters. It was demonstrated that at low severity reaction conditions the reactions occur via catalytic route, while at high severity conditions thermal reactions are more favored.

Jeremías Martínez; Jorge Ancheyta

2014-01-01T23:59:59.000Z

186

Texaco T-STAR Process for ebullated bed hydrotreating/hydrocracking  

SciTech Connect

Texaco has developed an ebullated bed hydrotreater/hydrocracker process called the T-STAR Process. This process is based upon the well known residuum H-Oil[reg sign] Process and Texaco's fixed bed hydrotreating/hydrocracking technology experience. T-STAR is ideally suited for hard to process feedstocks and for difficult processing requirements for the 90's such as FCCU feed pretreating, gas oil hydrocracking, and diesel aromatics reduction. The T-STAR reactors can be used in-line as hydrotreaters/hydrocrackers within an H-Oil[reg sign] unit. Pilot plant data are presented for several reactor/process configurations as well as commercial data and yields for a heavy gas oil operation. Texaco and HRI are offering the T-STAR Process to refiners for license and use.

Johns, W.F.; Kaufman, H. (Texaco Development Corp., Bellaire, TX (United States)); Clausen, G.; Nongbri, G. (Texaco Research and Development, Port Arthur, TX (United States))

1993-01-01T23:59:59.000Z

187

Priorities in the design of chemical shops at coke plants  

SciTech Connect

Recent trends in the design of chemical equipment at coke plants are described, through the lens of experience at Giprokoks. The main priorities were to improve the removal of impurities from coke oven gas; to improve equipment design on the basis of new materials; to reduce reagent consumption; to reduce the materials and energy consumed in the construction of new equipment; and to minimize impacts on the environment and worker health. Some technological equipment is briefly characterized.

V.I. Rudyka; Y.E. Zingerman; V.V. Grabko; L.A. Kazak [Giprokoks, the State Institute for the Design of Coke-Industry Enterprises, Kharkov (Ukraine)

2009-07-15T23:59:59.000Z

188

SELFOPTIMIZING CONTROL: A DISTILLATION CASE Sigurd Skogestad  

E-Print Network (OSTI)

for the controlled variables. The idea is applied to propane­propylene distillation case study. Keywords: ChemicalSELF­OPTIMIZING CONTROL: A DISTILLATION CASE STUDY Sigurd Skogestad #3; #3; Department of Chemical

Skogestad, Sigurd

189

Energy Recovery in Industrial Distillation Processes  

E-Print Network (OSTI)

ENERGY RECOVERY IN INDUSTRIAL DISTILLATION PROCESSES Duane B. Paul General Electric Company Fitchburg, Massachusetts ABSTRACT Overhead separati on processes whi ch present attracti ve Distillation processes are energy intensive Condenser...

Paul, D. B.

1983-01-01T23:59:59.000Z

190

Corrosion inhibition for distillation apparatus  

DOE Patents (OSTI)

Tower material corrosion in an atmospheric or sub-atmospheric distillation tower in a coal liquefaction process is reduced or eliminated by subjecting chloride-containing tray contents to an appropriate ion-exchange resin to remove chloride from such tray contents materials.

Baumert, Kenneth L. (Emmaus, PA); Sagues, Alberto A. (Lexington, KY); Davis, Burtron H. (Georgetown, KY); Schweighardt, Frank K. (Upper Macungie, PA)

1985-01-01T23:59:59.000Z

191

Entanglement distillation by extendible maps  

E-Print Network (OSTI)

It is known that from entangled states that have positive partial transpose it is not possible to distill maximally entangled states by local operations and classical communication (LOCC). A long-standing open question is whether maximally entangled states can be distilled from every state with a non-positive partial transpose. In this paper we study a possible approach to the question consisting of enlarging the class of operations allowed. Namely, instead of LOCC operations we consider k-extendible operations, defined as maps whose Choi-Jamiolkowski state is k-extendible. We find that this class is unexpectedly powerful - e.g. it is capable of distilling EPR pairs even from product states. We also perform numerical studies of distillation of Werner states by those maps, which show that if we raise the extension index k simultaneously with the number of copies of the state, then the class of k-extendible operations is not that powerful anymore and provide a better approximation to the set of LOCC operations.

Lukasz Pankowski; Fernando G. S. L. Brandao; Michal Horodecki; Graeme Smith

2011-09-08T23:59:59.000Z

192

POTENTIAL ENERGY SAVINGS OF MULTIVESSEL BATCH DISTILLATION  

E-Print Network (OSTI)

POTENTIAL ENERGY SAVINGS OF MULTIVESSEL BATCH DISTILLATION Bernd Wittgens and Sigurd Skogestad 1, Norway ABSTRACT - A conventional batch distillation column operated under feedback control applying the proposed policy is compared to the multivessel batch distillation column. In some cases we found

Skogestad, Sigurd

193

Multivessel Batch Distillation Potential Energy Savings  

E-Print Network (OSTI)

Multivessel Batch Distillation ­ Potential Energy Savings Bernd Wittgens and Sigurd Skogestad 1, Norway ABSTRACT ­ A conventional batch distillation column operated under feedback control applying the proposed policy is compared to the multivessel batch distillation column. In some cases we found

Skogestad, Sigurd

194

POTENTIAL ENERGY SAVINGS OF MULTIVESSEL BATCH DISTILLATION  

E-Print Network (OSTI)

POTENTIAL ENERGY SAVINGS OF MULTIVESSEL BATCH DISTILLATION Bernd Wittgens and Sigurd Skogestad 1, Norway ABSTRACT ­ A conventional batch distillation column operated under feedback control applying the proposed policy is compared to the multivessel batch distillation column. In some cases we found

Skogestad, Sigurd

195

Optimal distillation using thermodynamic geometry Bjarne Andresen  

E-Print Network (OSTI)

Optimal distillation using thermodynamic geometry Bjarne Andresen Ã?rsted Laboratory, University of a distillation column may be improved by permitting heat exchange on every tray rather than only in the reboiler (temperature, pressure, etc.) define successive states in a sequence of equilibria. Fractional distillation [2

Salamon, Peter

196

TOTAL REFLUX OPERATION OF MULTIVESSEL BATCH DISTILLATION  

E-Print Network (OSTI)

TOTAL REFLUX OPERATION OF MULTIVESSEL BATCH DISTILLATION BERND WITTGENS, RAJAB LITTO, EVA S RENSEN a generalization of previously proposed batch distillation schemes. A simple feedback control strategy for total re verify the simulations. INTRODUCTION Although batch distillation generally is less energy e cient than

Skogestad, Sigurd

197

Process Svstems Enaineerina Instability of Distillation Columns  

E-Print Network (OSTI)

Process Svstems Enaineerina , Instability of Distillation Columns Elling W. Jacobsen and Sigurd recognized, distillation columns, operating with reflux and boilup as independent inputs, may have The dynamic behavior of distillation columns has been stud- ied quite extensively over the past decades

Skogestad, Sigurd

198

TOTAL REFLUX OPERATION OF MULTIVESSEL BATCH DISTILLATION  

E-Print Network (OSTI)

TOTAL REFLUX OPERATION OF MULTIVESSEL BATCH DISTILLATION BERND WITTGENS, RAJAB LITTO, EVA SÃ?RENSEN in this paper provides a generalization of previously proposed batch distillation schemes. A simple feedback been built and the experiments verify the simulations. INTRODUCTION Although batch distillation

Skogestad, Sigurd

199

Experimental entanglement distillation of mesoscopic quantum states  

E-Print Network (OSTI)

LETTERS Experimental entanglement distillation of mesoscopic quantum states RUIFANG DONG1 , MIKAEL, entanglement distillation, a process of extracting a small set of highly entangled states from a large set of less entangled states, can be used4­14 . Here we report on the distillation of deterministically

Loss, Daniel

200

Analysis and Control of Heteroazeotropic Batch Distillation  

E-Print Network (OSTI)

Analysis and Control of Heteroazeotropic Batch Distillation S. Skouras and S. Skogestad Dept.interscience.wiley.com). The separation of close-boiling and azeotropic mixtures by heterogeneous azeotropic distillation is addressed. The results show that heteroazeotropic batch distillation exhibits substantial flexibility. The column profile

Skogestad, Sigurd

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Laboratory-Scale Coking of Coal?Petroleum Mixtures in Sealed Reactors  

Science Journals Connector (OSTI)

Further evidence for coal?petroleum interactions in this system is exhibited by the fact that (i) the product slates from the co-coking reactions are not linear combinations of the products from the feedstocks reacted individually and (ii) the fluidity profiles of the Powellton?resid mixtures are similar to those for two interacting coking coals. ... The boiling distribution of the oils from co-coking resembles that observed when the Powellton coal was coked in the absence of resid. ... In addition, the co-coking reactions show a “coke jump” that occurs at ?465 °C; this jump is not observed when the coal or petroleum feedstocks are reacted individually. ...

Anne E. Fickinger; Mark W. Badger; Gareth D. Mitchell; Harold H. Schobert

2004-05-19T23:59:59.000Z

202

Prediction of metallurgical coke strength from the petrographic composition of coal blends  

SciTech Connect

Turkey, especially Zonguldak on the West Coast of Black Sea region, has large reserves of bituminous coal that can be used either directly or in blends with other coals for metallurgical coke production. It is possible to predict the coking properties of these coals by petrographic analysis. In this study, semi- and non-coking coals were blended with coking bituminous coals in varying proportions and an estimation was made as to their stability factors through petrographic techniques. It was established that semi- and non-coking bituminous coals could be used in the production of metallurgical coke.

Sutcu, H.; Toroglu, I.; Piskin, S. [Zonguldak Karaelmas University, Zonguldak (Turkey)

2009-07-01T23:59:59.000Z

203

U.S. Distillate Market  

Gasoline and Diesel Fuel Update (EIA)

U.S. diesel and heating fuel U.S. diesel and heating fuel prices surged. The largest increases occurred in the distillate-based fuels (heating oil and diesel) in the Northeast. From January 17, New England residential heating oil prices rose over 78 cents per gallon to average $1.97 February 7; diesel increased 68 cents per gallon, averaging $2.12 February 7. Prices for both fuels began to fall back by February 14 as new supplies were arriving, and have continued to decline since. The main factors driving up these prices were low stocks leading into January, followed by a bout of severe weather that impacted both supply and demand. Demand: Cold weather increases core heating customer demand. In addition, it was reported that utilities were buying distillate both for peaking power and, along with industrial and commercial users, to

204

U.S. Distillate Market  

Gasoline and Diesel Fuel Update (EIA)

Slide 1 of 11 Notes: During the second half of January, diesel and heating fuel prices surged. The largest increases occurred in the distillate-based fuels (heating oil and diesel) in the Northeast. From January 17, New England residential heating oil prices rose over 78 cents per gallon to average $1.97 February 7; diesel increased 68 cents per gallon, averaging $2.12 February 7, but fell back to $1.93 by February 14 as new supplies are arriving. The main factors driving up these prices were low stocks leading into January, followed by a bout of severe weather that impacted both supply and demand. Demand: Cold weather increases core heating customer demand. In addition, it was reported that utilities were buying distillate both for peaking power and, along with industrial and commercial users, to

205

Simulated Distillation for Biofuel Analysis  

Science Journals Connector (OSTI)

Simulated Distillation for Biofuel Analysis ... SimDis therefore can easily be used to classifiy novel biofuels, for example, also bidodiesel made of algae or novel oilseed, regarding boiling characteristics and quality. ... and potential of biofuels in the transport sector including types of biofuel, feedstocks and technologies and some of the possible socio-economic, environmental and political implications of the widespread use of biofuels in our society. ...

Christine Bachler; Sigurd Schober; Martin Mittelbach

2009-12-30T23:59:59.000Z

206

Momentive Performance Materials Distillation Intercharger  

E-Print Network (OSTI)

Presenter: Nicki (Collins) Boucher Project Team: T. Baisley, C. Beers, R. Cameron, K. Holman, T. Kotkoskie, K. Norris Momentive Performance Materials Inc. Waterford, NY May 23, 2013 Industrial Energy Technology Conference ACC Responsible... Care? Energy Efficiency Program Momentive Performance Materials Distillation Interchanger ESL-IE-13-05-20 Proceedings of the Thrity-Fifth Industrial Energy Technology Conference New Orleans, LA. May 21-24, 2013 Copyright 2013 Momentive Performance...

Boucher, N.; Baisley, T.; Beers, C.; Cameron, R.; Holman, K.; Kotkoskie, T.; Norris, K.

2013-01-01T23:59:59.000Z

207

Hydrodesulfurization of Fluid Catalytic Cracking Decant Oils for the Production of Low-sulfur Needle Coke Feedstocks.  

E-Print Network (OSTI)

??Needle coke, produced by the delayed coking of fluid catalytic cracking decant oils, is the primary filler used in the production of graphite electrodes. The… (more)

Wincek, Ronald

2013-01-01T23:59:59.000Z

208

Preparation and coking properties of coal maceral concentrates  

Science Journals Connector (OSTI)

Abstract The concentrates with different maceral contents were obtained from Kailuan coking coals with different coal ranks ( R o,ran ? varying from 0.88% to 1.73%) by float–sink separation in lab. Then these concentrates were characterized by proximate analysis, ultimate analysis, petrography analysis and coking index determination. The results show that the vitrinite is characterized as nature of lower carbon content, higher hydrogen content, higher volatile matter and stronger caking property compared to inertinite. The relationships between variation rate of volatile matter and maximum volatile matter and coal ranks are identified, and a linear model is developed for fast determination of the maceral contents. Compared to inertinite-rich concentrate, the blending ratio of vitrinite-rich concentrate is increased by 13%, which is considered to be a potential technique based on maceral separation for expanding the coking coal resources.

Lei Zhang; Wenli Liu; Dongpo Men

2014-01-01T23:59:59.000Z

209

Coking Plants, Coal-to-gas Plants, Gas Production and Distribution  

Science Journals Connector (OSTI)

This environmental brief covers various coal upgrading technologies, incl. coking and low-temperature carbonization as processes yielding the target products coke and gas plus tar products and diverse...

1995-01-01T23:59:59.000Z

210

Determining the coking properties and technological value of coal and coal mixtures  

Science Journals Connector (OSTI)

A method is developed for determining the coking properties and technological value of coal from newly identified beds or new sections of existing mines. The coking properties are assessed on the basis of predict...

A. S. Stankevich; V. S. Stankevich

2012-01-01T23:59:59.000Z

211

Influence of frothing-agent oxidation on coking-coal flotation  

Science Journals Connector (OSTI)

The oxidation of frothing agents (KOBS, OPPG-3, and the tar fraction of peat bitumen) affects coking-coal flotation. The tar fraction of Krapivinsk-peat ... provides the basis for a frothing agent in coking-coal ...

M. Yu. Klimovich; S. I. Zherebtsov; Yu. V. Musin; A. I. Moiseev…

2008-12-01T23:59:59.000Z

212

Calculating the relative value of coal in Russian coking-coal markets  

Science Journals Connector (OSTI)

In order to improve the pricing of Russian coking coal, a method is proposed for calculating the relative technological value of purchased coking-coal batches. The basic idea is to compare the parameters of optim...

V. A. Brodskii; E. V. Brodskaya

2009-03-01T23:59:59.000Z

213

Coal resources at OOO Metinvest Holding and their optimal coking at PAO AKKhZ  

Science Journals Connector (OSTI)

The coal resources at OOO Metinvest Holding are considered, in a climate of increase requirements on coke quality and self-reliance. The parameters of high-quality coke are outlined, and the corresponding require...

V. G. Gusak; V. I. Gavrilyuk; M. S. Magomedov; A. A. Pasternak…

2013-11-01T23:59:59.000Z

214

Role of coke characteristics in the regeneration of a catalyst for the MTG process  

SciTech Connect

The effect on combustion in air of the nature of the coke deposited in HZSM5 zeolites used in the MTG process has been studied. This coke is highly hydrogenated and unstable, and its H/C ratio decreases during combustion or when a previous thermal treatment is carried out. Coke H/C ratio greatly affects its reactivity during combustion; consequently, a severe thermal equilibration treatment is recommended for reproducibility of results. Combustion kinetics of equilibrated coke, when it is released from the catalyst, has been proven to be similar to that of the coke deposited on other catalysts for several processes. Lower coke reactivity for aging and combustion, on being deposited within the HZSM5 zeolite, must be attributed to air-coke contact restrictions due to the location of the coke, which partially impedes the flow of air into the crystals.

Ortega, J.M.; Gayubo, A.G.; Aguayo, A.T.; Benito, P.L.; Bilbao, J. [Univ. del Pais Vasco, Bilbao (Spain). Dept. de Ingenieria Quimica] [Univ. del Pais Vasco, Bilbao (Spain). Dept. de Ingenieria Quimica

1997-01-01T23:59:59.000Z

215

New packing in absorption systems for trapping benzene from coke-oven gas  

SciTech Connect

The efficiency of benzene removal from coke-oven gas in absorption units OAO Alchevskkoks with new packing is assessed.

V.V. Grabko; V.M. Li; T.A. Shevchenko; M.A. Solov'ev [Giprokoks, the State Institute for the Design of Coke-Industry Enterprises, Kharkov (Ukraine)

2009-07-15T23:59:59.000Z

216

Entanglement distillation from quasifree Fermions  

E-Print Network (OSTI)

We develop a scheme to distill entanglement from bipartite Fermionic systems in an arbitrary quasifree state. It can be applied if either one system containing infinite one-copy entanglement is available or if an arbitrary amount of equally prepared systems can be used. We show that the efficiency of the proposed scheme is in general very good and in some cases even optimal. Furthermore we apply it to Fermions hopping on an infinite lattice and demonstrate in this context that an efficient numerical analysis is possible for more then 10^6 lattice sites.

Zoltan Kadar; Michael Keyl; Dirk Schlingemann

2010-03-14T23:59:59.000Z

217

Distillation of Bell states in open systems  

E-Print Network (OSTI)

In this work we review the entire classification of 2x2 distillable states for protocols with a finite numbers of copies. We show a distillation protocol that allows to distill Bell states with non zero probability at any time for an initial singlet in vacuum. It is shown that the same protocol used in non zero thermal baths yields a considerable recovering of entanglement.

E. Isasi; D. Mundarain

2009-08-14T23:59:59.000Z

218

Coke in the Cross Hairs: Water, India, and the University of Michigan  

E-Print Network (OSTI)

Coke in the Cross Hairs: Water, India, and the University of Michigan case 1-429-098 July 25, 2010, where "Killer Coke" banners had hung days before. Students were holed away studying for finals, the demonstrations were over and Coke was once again flowing from machines at the Michigan Union. That morning

Edwards, Paul N.

219

Distillation of liquid fuels by thermogravimetry  

SciTech Connect

In this paper, design and operation of a custom-built thermogravimetric apparatus for the distillation of liquid fuels are reported. Using a sensitive balance with scale of 0.001 g and ASTM distillation glassware, several petroleum and petroleum-derived samples have been analyzed by the thermogravimetric distillation method. When the ASTM distillation glassware is replaced by a micro-scale unit, sample size could be reduced from 100 g to 5-10 g. A computer program has been developed to transfer the data into a distillation plot, e.g. Weight Percent Distilled vs. Boiling Point. It also generates a report on the characteristic distillation parameters, such as, IBP (Initial Boiling Point), FBP (Final Boiling Point), and boiling point at 50 wt% distilled. Comparison of the boiling point distributions determined by TG (thermogravimetry) with those by SimDis GC (Simulated-Distillation Gas Chromatography) on two liquid fuel samples (i.e. a decanted oil and a filtered crude oil) are also discussed in this paper.

Huang, He; Wang, Keyu; Wang, Shaojie; Klein, M.T.; Calkins, W.H.

1996-12-31T23:59:59.000Z

220

Conceptual Design for Pressure Swing Distillation.  

E-Print Network (OSTI)

??The separation of homogenous azeotropic mixtures is a common task in the chemical industry. In the literature, pressure swing distillation is often mentioned as an… (more)

Bozzacco, Carmen

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Total Organic Carbon Rejection in Osmotic Distillation.  

E-Print Network (OSTI)

?? The osmotic distillation (OD) system is a spacecraft wastewater recycling system designed to produce potable water from human urine and humidity condensate. The OD… (more)

Shaw, Hali Laraelizabeth

2012-01-01T23:59:59.000Z

222

Intelligent fuzzy supervisory control for distillation columns.  

E-Print Network (OSTI)

??Distillation as a separation technique is widely used in the chemical and petroleum industries. With the growth of these industries and the availability of cheap… (more)

Santhanam, Srinivasan

2012-01-01T23:59:59.000Z

223

Adjusted Distillate Fuel Oil Sales for Residential Use  

U.S. Energy Information Administration (EIA) Indexed Site

End Use/ Product: Residential - Distillate Fuel Oil Residential - No. 1 Residential - No. 2 Residential - Kerosene Commercial - Distillate Fuel Oil Commercial - No. 1 Distillate Commercial - No. 2 Distillate Commercial - No. 2 Fuel Oil Commercial - Ultra Low Sulfur Diesel Commercial - Low Sulfur Diesel Commercial - High Sulfur Diesel Commercial - No. 4 Fuel Oil Commercial - Residual Fuel Oil Commercial - Kerosene Industrial - Distillate Fuel Oil Industrial - No. 1 Distillate Industrial - No. 2 Distillate Industrial - No. 2 Fuel Oil Industrial - Low Sulfur Diesel Industrial - High Sulfur Diesel Industrial - No. 4 Fuel Oil Industrial - Residual Fuel Oil Industrial - Kerosene Farm - Distillate Fuel Oil Farm - Diesel Farm - Other Distillate Farm - Kerosene Electric Power - Distillate Fuel Oil Electric Power - Residual Fuel Oil Oil Company Use - Distillate Fuel Oil Oil Company Use - Residual Fuel Oil Total Transportation - Distillate Fuel Oil Total Transportation - Residual Fuel Oil Railroad Use - Distillate Fuel Oil Vessel Bunkering - Distillate Fuel Oil Vessel Bunkering - Residual Fuel Oil On-Highway - No. 2 Diesel Military - Distillate Fuel Oil Military - Diesel Military - Other Distillate Military - Residual Fuel Oil Off-Highway - Distillate Fuel Oil Off-Highway - Distillate F.O., Construction Off-Highway - Distillate F.O., Non-Construction All Other - Distillate Fuel Oil All Other - Residual Fuel Oil All Other - Kerosene Period:

224

Table 33. Coal Carbonized at Coke Plants by Census Division  

U.S. Energy Information Administration (EIA) Indexed Site

Coal Carbonized at Coke Plants by Census Division Coal Carbonized at Coke Plants by Census Division (thousand short tons) U.S. Energy Information Administration | Quarterly Coal Report, April - June 2013 Table 33. Coal Carbonized at Coke Plants by Census Division (thousand short tons) U.S. Energy Information Administration | Quarterly Coal Report, April - June 2013 Year to Date Census Division April - June 2013 January - March 2013 April - June 2012 2013 2012 Percent Change Middle Atlantic w w w w w w East North Central 3,051 2,997 3,092 6,048 6,156 -1.8 South Atlantic w w w w w w East South Central w w w w w w U.S. Total 5,471 5,280 5,296 10,751 10,579 1.6 w = Data withheld to avoid disclosure. Note: Total may not equal sum of components because of independent rounding. Source: U.S. Energy Information Administration (EIA), Form EIA-5, 'Quarterly Coal Consumption and Quality Report - Coke Plants

225

Process for converting coal into liquid fuel and metallurgical coke  

DOE Patents (OSTI)

A method of recovering coal liquids and producing metallurgical coke utilizes low ash, low sulfur coal as a parent for a coal char formed by pyrolysis with a volatile content of less than 8%. The char is briquetted and heated in an inert gas over a prescribed heat history to yield a high strength briquette with less than 2% volatile content.

Wolfe, Richard A. (Abingdon, VA); Im, Chang J. (Abingdon, VA); Wright, Robert E. (Bristol, TN)

1994-01-01T23:59:59.000Z

226

Estimating Coke and Pepsi's Price and Advertising Strategies Amos Golan*  

E-Print Network (OSTI)

Estimating Coke and Pepsi's Price and Advertising Strategies Amos Golan* Larry S. Karp** Jeffrey M strategies in prices and advertising for Coca-Cola and Pepsi-Cola. Separate strategies for each firm variables are prices and advertising. We divide each firm's continuous price-advertising action space

Lansky, Joshua

227

Lummus process turns coal tar pitch to coke  

Science Journals Connector (OSTI)

Lummus Co. has developed a process for converting coal tar pitch to coke and now has a full-scale commercial plant in operation in Japan. The plant, which is owned by Nittetsu Chemical Industrial Co., a subsidiary of Yawata Iron and Steel, is producing ...

1968-12-09T23:59:59.000Z

228

The development of coke smelting and the industrial revolution  

E-Print Network (OSTI)

Abraham Darby and the origins of the industrial revolution in Britain. Alan Macfarlane talks to John about the reasons for the area near Birmingham becoming the epi-centre of the industrial development, and the development of coke furnaces and iron...

Macfarlane, Alan

2004-08-05T23:59:59.000Z

229

Coke quality for blast furnaces with coal-dust fuel  

SciTech Connect

Recently, plans have been developed for the introduction of pulverized coal injection (PCI) at various Russian metallurgical enterprises. The main incentive for switching to PCI is the recent price rises for Russian natural gas. The paper discusses the quality of coke for PCI into blast furnaces.

Y.A. Zolotukhin; N.S. Andreichikov [Eastern Coal-Chemistry Institute, Yekaterinburg (Russian Federation)

2009-07-01T23:59:59.000Z

230

Table 23. Coal Receipts at Coke Plants by Census Division  

U.S. Energy Information Administration (EIA) Indexed Site

Receipts at Coke Plants by Census Division Receipts at Coke Plants by Census Division (thousand short tons) U.S. Energy Information Administration | Quarterly Coal Report, April - June 2013 Table 23. Coal Receipts at Coke Plants by Census Division (thousand short tons) U.S. Energy Information Administration | Quarterly Coal Report, April - June 2013 Year to Date Census Division April - June 2013 January - March 2013 April - June 2012 2013 2012 Percent Change Middle Atlantic w w w w w w East North Central 3,189 2,679 3,225 5,867 5,993 -2.1 South Atlantic w w w w w w East South Central w w w w w w U.S. Total 5,770 4,962 5,370 10,732 10,440 2.8 w = Data withheld to avoid disclosure. Note: Total may not equal sum of components because of independent rounding. Source: U.S. Energy Information Administration (EIA), Form EIA-5, 'Quarterly Coal Consumption and Quality Report - Coke Plants

231

The Role of Semifusinite in Plasticity Development for a Coking Coal  

Science Journals Connector (OSTI)

Coal rank is a factor of great importance in plasticity development during carbonization, since only some bituminous coals swell in a satisfactory manner and then resolidify to produce good commercial cokes. ... Diessel studied the carbonization behavior of the inertinite macerals in Australian coals by carrying out tests up to 1000 °C where the optical characteristics of the coked entities were correlated with their noncoked counterparts. ... For instance, large-scale coking experiments of some Australian coals containing more than 45% inertinite produced good quality coke, while a Carboniferous coal with that high of an inertinite content gave only a very poor coke. ...

M. Mercedes Maroto-Valer; Darrell N. Taulbee; John M. Andrésen; James C. Hower; Colin E. Snape

1998-08-27T23:59:59.000Z

232

Theoretical and experimental foundations for preparing coke for blast-furnace smelting  

SciTech Connect

This article examines the preparation of coke for blast-furnace smelting by a method that most fully meets the requirements of blast-furnace technology: screening of the -36 mm fraction, the separation of nut coke of the 15-36 mm fraction, and its charging into the furnace in a mixture with the iron-ore-bearing charge components. An analysis is made of trial use of coke of the Premium class on blast furnace No. 5 at the Enakievo Metallurgical Plant. Use of this coke makes it possible to reduce the consumption of skip coke by 3.2-4.1%.

A.L. Podkorytov; A.M. Kuznetsov; E.N. Dymchenko; V.P. Padalka; S.L. Yaroshevskii; A.V. Kuzin [Enakievo Metallurgical Plant, Enakievo (Ukraine)

2009-05-15T23:59:59.000Z

233

Coke battery with 51-m{sup 3} furnace chambers and lateral supply of mixed gas  

SciTech Connect

The basic approaches employed in the construction of coke battery 11A at OAO Magnitogorskii Metallurgicheskii Kombinat are outlined. This battery includes 51.0-m{sup 3} furnaces and a dust-free coke-supply system designed by Giprokoks with lateral gas supply; it is heated exclusively by low-calorific mixed gas consisting of blast-furnace gas with added coke-oven gas. The 82 furnaces in the coke battery are divided into two blocks of 41. The gross coke output of the battery (6% moisture content) is 1140000 t/yr.

V.I. Rudyka; N.Y. Chebotarev; O.N. Surenskii; V.V. Derevich [Giprokoks, the State Institute for the Design of Coke-Industry Enterprises, Kharkov (Ukraine)

2009-07-15T23:59:59.000Z

234

Characterization of Liquids Derived From Laboratory Coking of Decant Oil and Co-Coking of Pittsburgh Seam Bituminous Coal with Decant Oil  

Science Journals Connector (OSTI)

(41-43) Co-coking of decant oil/coal blend produced higher coke and gas yields but less liquid product than those of coking. ... When the same decant oil was blended with the Pittsburgh Seam coal and then delayed co-coked, the overhead liquid contained 2.1% gasoline, 3.6% jet fuel, 4.6% diesel, and 88.8% fuel oil on average. ... It is also possible that catalytic cracking reactions may occur via the coal mineral matter (e.g., clays, which are abundant minerals in coals, can serve as cracking catalysts) (Table 1). ...

Ömer Gül; Caroline Clifford; Leslie R. Rudnick; Harold H. Schobert

2009-04-21T23:59:59.000Z

235

Distillability of entanglement in accelerated frames  

Science Journals Connector (OSTI)

We study the entanglement distillability of bipartite mixed states of two modes of a free Dirac field as seen by two relatively accelerated parties. It is shown that there are states that will change from distillable into separable for a certain value of acceleration. We exemplify these criteria in the context of Werner states.

Shahpoor Moradi

2009-06-05T23:59:59.000Z

236

Rank three bipartite entangled states are distillable  

E-Print Network (OSTI)

We prove that the bipartite entangled state of rank three is distillable. So there is no rank three bipartite bound entangled state. By using this fact, We present some families of rank four states that are distillable. We also analyze the relation between the low rank state and the Werner state.

Lin Chen; Yi-Xin Chen

2008-03-07T23:59:59.000Z

237

Locally accessible information and distillation of entanglement  

SciTech Connect

A different type of complementarity relation is found between locally accessible information and final average entanglement for a given ensemble. It is also shown that in some well-known distillation protocols, this complementary relation is optimally satisfied. We discuss the interesting trade-off between locally accessible information and distillable entanglement for some states.

Ghosh, Sibasish [Department of Computer Science, University of York, Heslington, York, YO10 (United Kingdom); Joag, Pramod [Department of Physics, University of Pune, Ganeshkhind, Pune 411 007 (India); Kar, Guruprasad; Kunkri, Samir [Physics and Applied Mathematics Unit, Indian Statistical Institute, 203, B.T. Road, Kolkata 700 108 (India); Roy, Anirban [Institute of Mathematical Sciences, CIT Campus, Taramani, Chennai 600 113 (India)

2005-01-01T23:59:59.000Z

238

Forpeerreview Synthesis of Complex Thermally Coupled Distillation  

E-Print Network (OSTI)

US energy consumption, which is equivalent to 2.87x10 18 J (2.87 million TJ) per year, or to a power; Divided Wall Column; Superstructure optimization; GDP. Introduction Distillation is one of the most limitations. Distillation columns use very large amounts of energy because the evaporation steps involved

Grossmann, Ignacio E.

239

Distillability of entanglement in accelerated frames  

E-Print Network (OSTI)

We study the entanglement distillability of bipartite mixed states of two modes of a free Dirac field as seen by two relatively accelerated parties. It is shown that there are states that will change from distillable into separable for a certain value of acceleration. We exemplify these criteria in the context of Werner states.

Shahpoor Moradi

2012-01-02T23:59:59.000Z

240

Table 50. Prime Supplier Sales Volumes of Distillate Fuel Oils...  

U.S. Energy Information Administration (EIA) Indexed Site

No. 2 Distillate No. 4 Fuel a Total Distillate and Kerosene No. 2 Fuel Oil No. 2 Diesel Fuel No. 2 Distillate Low-Sulfur High-Sulfur Total United States January...

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Rigorous Synthesis and Simulation of Complex Distillation Networks  

E-Print Network (OSTI)

Rigorous Synthesis and Simulation of Complex Distillation Networks Gerardo J. Ruiz, Seon B. Kim energy-efficient distillation net- works. Complex column networks have substantial potential for energy column, networks, temperature collocation, inverse design, Aspen validation Introduction Distillation

Linninger, Andreas A.

242

Integrated C3 Feedstock and Aggregated Distillation Model for  

E-Print Network (OSTI)

Polypropylene Propane return Reactor effluent Distillation Polymerization FeedTank Propylene (91%) Goal: Select. Refinery Grade (RG) Propane return Distillation Vapor recompression Propylene (91%) ~79% propylene #12 Polypropylene Propane return Reactor effluent Distillation Polymerization Feed Tank Propylene ~79% propylene ~95

Grossmann, Ignacio E.

243

U.S. Distillate Inventory Outlook  

Gasoline and Diesel Fuel Update (EIA)

7 7 Notes: Total distillate stocks rose only marginally in November, to about 117 million barrels from about 115 million barrels at the end of October. The "normal" or average inventory level at end November is 146 million barrels. Thus, by the end of November, instead of seeing an improvement, US distillate inventories were 30 million barrels less than normal rather than the 26 million barrels less as of the end of October, indicating greater tightness in markets for heating oil and diesel fuel. If the currently depressed level of distillate stocks continues, the result could be strong upward pressure on prices for the distillate fuels through the winter. In fact, the tightness in distillate markets, particularly in the Northeast, has worsened and left the heating oil market more vulnerable

244

U.S. Distillate Inventory Outlook  

Gasoline and Diesel Fuel Update (EIA)

As of December 29, distillate fuel oil stocks were about 116 million As of December 29, distillate fuel oil stocks were about 116 million barrels, which is over 14 percent below their 5 year average for this time of year. Heating oil stocks were at 47.4 million barrels, or about 28 percent lower than their seasonal 5-year average. If the currently depressed level of distillate stocks continues, the result could be strong upward pressure on prices for the distillate fuels through the winter. Recently, the tightness in distillate markets, particularly in the Northeast, has worsened and left the heating oil market more vulnerable to near-term shocks from potential cold weather events or disruptions in the logistical system than was expected earlier this fall. Unless the second half of the winter in the Northeast is unusually

245

U.S. Distillate Inventory Outlook  

Gasoline and Diesel Fuel Update (EIA)

9 9 Notes: At the end of December, distillate fuel oil stocks were about 116 million barrels, which is more than 14 percent below their 5-year average for this time of year, and about 7 percent less than last year's low levels. As of January 19, the most recent weekly data, distillate stocks remained at about that level, which is slightly higher than a year ago. If the currently depressed level of distillate stocks continues, the result could be strong upward pressure on prices for the distillate fuels through the winter. Recently, the tightness in distillate markets, particularly in the Northeast, has worsened and left the heating oil market more vulnerable to near-term shocks from potential cold weather events or disruptions in the logistical system than was expected earlier this fall.

246

Advancing Biorefining of Distiller's Grain and Corn Stover Blends...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Advancing Biorefining of Distiller's Grain and Corn Stover Blends Advancing Biorefining of Distiller's Grain and Corn Stover Blends This fact sheet summarizes a U.S. Department of...

247

New Design Methods and Algorithms for Multi-component Distillation...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

New Design Methods and Algorithms for Multi-component Distillation Processes New Design Methods and Algorithms for Multi-component Distillation Processes multicomponent.pdf More...

248

Synthesis of azeotropic batch distillation separation systems  

SciTech Connect

The sequencing of batch distillation systems, in particular batch distillation columns, can be complicated by the existence of azeotropes in the mixture. These azeotropes can form batch distillation regions where, depending on the initial feed to the batch column, the types of feasible products and separations are limited. It is very important that these distillation regions are known while attempting to synthesize sequences of batch columns so infeasible designs can be eliminated early on in the design phase. The distillation regions also give information regarding the feasible products that can be obtained when the mixture is separated by using a variety of batch column configurations. The authors will show how a tool for finding the batch distillation regions of a particular mixture can be used in the synthesis of batch distillation column sequences. These sequences are determined by the initial feed composition to the separation network. The network of all possible sequences will be generated by using state-task networks when batch rectifying, stripping, middle vessel, and extractive middle vessel columns are allowed. The authors do not determine which sequence is the best, as the best sequence will depend on the particular application to which one is applying the algorithms. They show an example problem for illustration of this technique.

Safrit, B.T. [Eastman Chemical Co., Kingsport, TN (United States)] [Eastman Chemical Co., Kingsport, TN (United States); Westerberg, A.W. [Carnegie Mellon Univ., Pittsburgh, PA (United States)] [Carnegie Mellon Univ., Pittsburgh, PA (United States)

1997-05-01T23:59:59.000Z

249

Distillation: Still towering over other options  

SciTech Connect

Distillation dominates separations in the chemical process industries (CPI), at least for mixtures that normally are processed as liquids. The authors fully expect that distillation will continue to be the method of choice for many separations, and the method against which other options must be compared. So, in this article, they will put into some perspective just why distillation continues to reign as the king of separations, and what steps are being taken to improve its applicability and performance, as well as basic understanding of the technique.

Kunesh, J.G. [Fractionation Research, Inc., Stillwater, OK (United States); Kister, H.Z. [Brown and Root, Inc., Alhambra (Canada); Lockett, M.J. [Praxair, Inc., Tonawanda, NY (United States); Fair, J.R. [Univ. of Texas, Austin, TX (United States)

1995-10-01T23:59:59.000Z

250

Coke County, Texas: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Coke County, Texas: Energy Resources Coke County, Texas: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 31.8277663°, -100.5296115° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":31.8277663,"lon":-100.5296115,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

251

Integrated coke, asphalt and jet fuel production process and apparatus  

DOE Patents (OSTI)

A process and apparatus for the production of coke, asphalt and jet fuel m a feed of fossil fuels containing volatile carbon compounds therein is disclosed. The process includes the steps of pyrolyzing the feed in an entrained bed pyrolyzing means, separating the volatile pyrolysis products from the solid pyrolysis products removing at least one coke from the solid pyrolysis products, fractionating the volatile pyrolysis products to produce an overhead stream and a bottom stream which is useful as asphalt for road pavement, condensing the overhead stream to produce a condensed liquid fraction and a noncondensable, gaseous fraction, and removing water from the condensed liquid fraction to produce a jet fuel-containing product. The disclosed apparatus is useful for practicing the foregoing process. the process provides a useful method of mass producing and jet fuels from materials such as coal, oil shale and tar sands.

Shang, Jer Y. (McLean, VA)

1991-01-01T23:59:59.000Z

252

Pricing of Australia's coking coal exports: A regional hedonic analysis  

Science Journals Connector (OSTI)

Black coal is Australia's most important export commodity, but the profitability of the domestic coal industry has been low relative to the mining sector average. As a consequence, a key policy issue in Australia has been the extent to which Japan's coal pricing and investment policies have influenced coal market outcomes. In this paper, a regional hedonic pricing model of Australia's coking coal exports is estimated for the period JFY1989 to 1996. Non-Japan regional intercept dummy variables were found to be significantly different from zero, although these varied across coal categories and years. However, the empirical evidence indicates that Japan does not pay significantly lower prices relative to other major export markets for coking coal of a given quality.

Lindsay Hogan; Sally Thorpe; Anthony Swan; Simon Middleton

1999-01-01T23:59:59.000Z

253

Production of Gasoline and Diesel from Biomass via Fast Pyrolysis, Hydrotreating and Hydrocracking: 2012 State of Technology and Projections to 2017  

SciTech Connect

This report summarizes the economic impact of the work performed at PNNL during FY12 to improve fast pyrolysis oil upgrading via hydrotreating. A comparison is made between the projected economic outcome and the actual results based on experimental data. Sustainability metrics are also included.

Jones, Susanne B.; Snowden-Swan, Lesley J.

2013-08-27T23:59:59.000Z

254

Coke profile and effect on methane/ethylene conversion process  

E-Print Network (OSTI)

balance in catalytic cracking. It is also extremely important in the dehydrogenation of butane to butadiene, because coke formation limits the cycle time before regeneration of the catalyst is needed. There are many add that equally important examples..., methane, ethane, ethylene, propane, iso-butane, butane, iso-pentane, pentane and hexanes. Also, the flow rate of the effluent stream is measured using the bubble meter. The mole percentages of methane and ethylene are subtracted of the effluent stream...

Al-Solami, Bandar

2002-01-01T23:59:59.000Z

255

New environmental concepts in the chemical and coke industries  

SciTech Connect

We know that environmentally pure technologies do not exist. Coke production is no exception to the rule. The article considers the logic of environmental decision making. Attention focuses on a new bank of ecologically appropriate materials whose release to the biosphere must be considered solely in quantititative terms. Qualitativily all these materials are familiar; they are assimilated by populations of microorganisms and tar thus compatible with the biosphere.

A.Yu. Naletov; V.A. Naletov [Mendeleev Russian Chemical-Engineering University (Russian Federation)

2007-05-15T23:59:59.000Z

256

Table 17. Average Price of U.S. Coke Exports  

U.S. Energy Information Administration (EIA) Indexed Site

Average Price of U.S. Coke Exports Average Price of U.S. Coke Exports (dollars per short ton) U.S. Energy Information Administration | Quarterly Coal Report, April - June 2013 Table 17. Average Price of U.S. Coke Exports (dollars per short ton) U.S. Energy Information Administration | Quarterly Coal Report, April - June 2013 Year to Date Continent and Country of Destination April - June 2013 January - March 2013 April - June 2012 2013 2012 Percent Change North America Total 240.59 241.38 218.40 240.85 225.80 6.7 Canada* 147.49 330.47 243.04 183.08 286.56 -36.1 Mexico 316.57 211.63 189.12 273.97 171.71 59.6 Other** 612.42 485.63 134.48 525.92 135.04 289.5 South America Total 140.65 156.15 322.70 148.29 250.36 -40.8 Other** 140.65 156.15 322.70 148.29 250.36 -40.8 Europe Total 259.26 255.24 - 257.06 427.83 -39.9 Other**

257

Table 22. Average Price of U.S. Coke Imports  

U.S. Energy Information Administration (EIA) Indexed Site

Average Price of U.S. Coke Imports Average Price of U.S. Coke Imports (dollars per short ton) U.S. Energy Information Administration | Quarterly Coal Report, April - June 2013 Table 22. Average Price of U.S. Coke Imports (dollars per short ton) U.S. Energy Information Administration | Quarterly Coal Report, April - June 2013 Year to Date Continent and Country of Origin April - June 2013 January - March 2013 April - June 2012 2013 2012 Percent Change North America Total 263.21 252.66 353.05 261.29 356.01 -26.6 Canada 263.51 252.66 353.05 258.82 356.01 -27.3 Panama 263.09 - - 263.09 - - South America Total 196.86 194.14 175.88 195.94 181.01 8.2 Brazil - - 157.60 - 157.60 - Colombia 196.86 194.14 322.06 195.94 246.68 -20.6 Europe Total 181.55 232.13 385.65 225.53 384.96 -41.4 Czech Republic - 475.91 - 475.91 - - Spain 360.51

258

Distillate and Spot Crude Oil Prices  

Gasoline and Diesel Fuel Update (EIA)

5 5 Notes: This slide shows the strong influence crude oil prices have on retail distillate prices. The price for distillate fuel oil tracks the crude price increases seen in 1996 and the subsequent fall in 1997 and 1998. Distillate prices have also followed crude oil prices up since the beginning of 1999. Actual data show heating oil prices on the East Coast in June at $1.20 per gallon, up 39 cents over last June. However, if heating oil prices are following diesel, they may be up another 5 cents in August. That would put heating oil prices about 40 cents over last August prices. Crude oil prices are only up about 25 cents in August over year ago levels. The extra 15 cents represents improved refiner margins due in part to the very low distillate inventory level.

259

Nonlocality Distillation for High-Dimensional System  

E-Print Network (OSTI)

The intriguing and powerful capability of nonlocality in communication field ignites the research of the nonlocality distillation. The first protocol presented in Ref[Phys. Rev. Lett. 102, 120401] shows that the nonlocality of bipartite binary-input and binary-output nonsignaling correlated boxes could be amplified by 'wiring' two copies of weaker-nonlocality boxes. Several optimized distillation protocols were presented later for bipartite binary-input and binary-output nonsignaling correlated boxes. In this paper, we focus on the bipartite binary-input and multi-nary-output nonsignaling correlated boxes---high-dimensional boxes, and design comparators-based protocols to achieve the distillation of high-dimensional nonlocality. The results show that the high-dimensional nonlocality can be distilled in different ways, and we find that the efficiencies of the protocols are influenced not only by the wirings but also by the classes the initial nonlocality boxes belongs to. Here, the initial nonlcalities may hav...

Pan, Guo-Zhu; Chen, Zheng-Gen; Yang, Ming; Cao, Zhuo-Liang

2012-01-01T23:59:59.000Z

260

Minimizing corrosion in coal liquid distillation  

DOE Patents (OSTI)

In an atmospheric distillation tower of a coal liquefaction process, tower materials corrosion is reduced or eliminated by introduction of boiling point differentiated streams to boiling point differentiated tower regions.

Baumert, Kenneth L. (Emmaus, PA); Sagues, Alberto A. (Lexington, KY); Davis, Burtron H. (Georgetown, KY)

1985-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Multipartite secret key distillation and bound entanglement  

SciTech Connect

Recently it has been shown that quantum cryptography beyond pure entanglement distillation is possible and a paradigm for the associated protocols has been established. Here we systematically generalize the whole paradigm to the multipartite scenario. We provide constructions of new classes of multipartite bound entangled states, i.e., those with underlying twisted Greenberger-Horne-Zeilinger (GHZ) structure and nonzero distillable cryptographic key. We quantitatively estimate the key from below with the help of the privacy squeezing technique.

Augusiak, Remigiusz; Horodecki, Pawel [Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-952 Gdansk (Poland) and ICFO-Institute Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona) (Spain); Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-952 Gdansk (Poland)

2009-10-15T23:59:59.000Z

262

Multipartite secret key distillation and bound entanglement  

E-Print Network (OSTI)

Recently it has been shown that quantum cryptography beyond pure entanglement distillation is possible and a paradigm for the associated protocols has been established. Here we systematically generalize the whole paradigm to the multipartite scenario. We provide constructions of new classes of multipartite bound entangled states, i.e., those with underlying twisted GHZ structure and nonzero distillable cryptographic key. We quantitatively estimate the key from below with help of the privacy squeezing technique.

Remigiusz Augusiak; Pawel Horodecki

2008-11-21T23:59:59.000Z

263

Use of computers for multicomponent distillation calculations  

E-Print Network (OSTI)

LIBRARY 4 A I4 COLLEGE QF TEXAS USE OF COMPUTERS FOB MULTICOMPONENT DISTILLATION CALCULATIONS A Thesis By Samuel Lane Sullivan Jr, Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE January 1959 Major Subject: Chemical Engineering USE OF COMPUTERS FOR NULTICOMPONENT DISTILLATION CALCULATIONS A Thesis By Samuel Lane Sullivan Jr. Approved as to style and content by: Chairman...

Sullivan, Samuel Lane

2012-06-07T23:59:59.000Z

264

Sulfur-isotope separation by distillation  

SciTech Connect

Sulfur-isotope separation by low-temperature distillation of hydrogen sulfide was studied in an 8-m, 25-mm diameter distillation column. Column temperature was controlled by a propane-propylene heat pipe. Column packing HETP was measured using nitric oxide in the column. The column was operated at pressures from 45 to 125 kPa. The relative volatility of S-32 vs. S-34 varied from 1.0008 to 1.0014.

Mills, T.R.

1982-01-01T23:59:59.000Z

265

Influence of the permeability of the coal plastic layer on coking pressure  

Science Journals Connector (OSTI)

Ten coals of different rank and coking pressure characteristics were chosen in order to study the time of occurrence of the phenomena that take place during the coking of a coal and the way they affect the generation of dangerous coking pressures. Parameters derived from thermoplastic, thermogravimetric and permeability tests were studied together with semicoke contraction and the coking pressure generated by the coals in a movable wall oven. It was found that for safe coals, the maximum evolution of volatile matter occurs near the temperature of maximum fluidity. The position of the maximum rate of volatile matter evolution with respect to the zone of low permeability varies depending on the coking pressure characteristics of the coals. In addition, the relationship between the period of low permeability to the resolidification temperature may serve to indicate the degree of dangerousness of a coal. The fissure pattern of the semicoke was found to be related to the coking pressure and semicoke contraction.

M.D. Casal; E. Díaz-Faes; R. Alvarez; M.A. Díez; C. Barriocanal

2006-01-01T23:59:59.000Z

266

An Integrated Model of Coal/Coke Combustion in a Blast Furnace  

Science Journals Connector (OSTI)

A three?dimensional integrated mathematical model of the combustion of pulverized coal and coke is developed. The model is applied to the region of lance?blowpipe?tuyere?raceway?coke bed to simulate the operation of pulverized coal injection in an ironmaking blast furnace. The model integrates two parts: pulverized coal combustion model in the blowpipe?tuyere?raceway?coke bed and the coke combustion model in the coke bed. The model is validated against the measurements in terms of coal burnout and gas composition respectively. The comprehensive in?furnace phenomena are simulated in the raceway and coke bed in terms of flow temperature gas composition and coal burning characteristics. In addition underlying mechanisms for the in?furnace phenomena are analyzed. The model provides a cost?effective tool for understanding and optimizing the in?furnace flow?thermo?chemical characteristics of the PCI process in full?scale blast furnaces.

Y. S. Shen; B. Y. Guo; A. B. Yu; P. Austin; P. Zulli

2010-01-01T23:59:59.000Z

267

MULTIVESSEL BATCH DISTILLATION 1 SIGURD SKOGESTAD 2 , BERND WITTGENS,  

E-Print Network (OSTI)

MULTIVESSEL BATCH DISTILLATION 1 SIGURD SKOGESTAD 2 , BERND WITTGENS, EVA S RENSEN 3 and RAJAB distillation schemes. A simple feedback control strategy for the total re ux operation of a multivessel column distillation generally is less energy e cient than continuous distillation, it has received increased attention

Skogestad, Sigurd

268

Complex Fluid Analysis with the Advanced Distillation Curve Approach  

E-Print Network (OSTI)

Complex Fluid Analysis with the Advanced Distillation Curve Approach Thomas J. Bruno, Lisa S. Ott for measuring distillation curves reveals the physicochemical properties of complex fluids such as fuels distillation curves of complex fluids. The distillation curve provides the only practical avenue to assess

269

MULTIVESSEL BATCH DISTILLATION 1 SIGURD SKOGESTAD 2 , BERND WITTGENS,  

E-Print Network (OSTI)

MULTIVESSEL BATCH DISTILLATION 1 SIGURD SKOGESTAD 2 , BERND WITTGENS, EVA SÃ?RENSEN 3 and RAJAB distillation schemes. A simple feedback control strategy for the total reflux operation of a multivessel column distillation generally is less energy efficient than continuous distillation, it has received increased

Skogestad, Sigurd

270

On the Communication Complexity of Correlation and Entanglement Distillation  

E-Print Network (OSTI)

On the Communication Complexity of Correlation and Entanglement Distillation Ke Yang May 4th, 2004 distillation, entanglement distillation, communication complexity, EPR pairs, quantum key distribution #12) information, and then engage in a protocol to \\distill" the correlation/entanglement via communication. We

271

Blog Distillation via Sentiment-Sensitive Link Analysis  

E-Print Network (OSTI)

Blog Distillation via Sentiment-Sensitive Link Analysis Giacomo Berardi, Andrea Esuli, Fabrizio blog distillation by adding a link analysis phase to the standard retrieval-by-topicality phase, where in blog distillation. 1 Introduction Blog distillation is a subtask of blog search. It is defined

Sebastiani, Fabrizio

272

Preliminary Results from the Industrial Steam System Market Assessment  

E-Print Network (OSTI)

Distillation 92 6.433 113 2.8 123.3 238.8 Visbreaking 87 65 3 0.7 ( 1.3) 2.1 Coking Operations 170 1,771 110 14.1 (9A 115.1 Fluid Catalytic Cracking 100 5.051 166 23A 114A 189.8 Catalytic Hydrocracking 240 1,261 62 18.2 336 113.9 Catalytic Hydrotreating...

McGrath, G. P.; Wright, A. L.

273

Distillation of liquid fuels by thermogravimetry  

SciTech Connect

The most widely used separation technique in the petroleum industry and other liquid fuel production processes as well as in much of the chemical industry is distillation. To design and operate an appropriate commercial and laboratory distillation unit requires a knowledge of the boiling point distribution of the materials to be separated. In recognition of these needs, the ASTM developed the distillation procedures of D86, D216, D447, D850, and D1078. They are widely used in laboratories for the purposes of sample characterization, product and quality control, and distillation column design. However, the significant drawbacks of these ASTM methods include (1) close monitoring of the distillation is required. This is particularly difficult for those samples which are very toxic and/or cause any other safety problems; (2) the sample under test must be transparent and free of separated water; and (3) results obtained by these methods are not particularly precise. This motivated the development of a novel automatic distillation system based on the use of a custom-built thermogravimetric apparatus.

Huang, He; Wang, Keyu; Wang, Shaojie [Univ. of Delaware, Newark, DE (United States)] [and others

1996-12-31T23:59:59.000Z

274

Assessing the utility of coal’s elementary composition in predicting the yield of coking products  

Science Journals Connector (OSTI)

Elementary analysis of the organic mass of coal does not provide sufficient information to predict the yield of coking products, since it does not reflect the...

M. L. Ulanovskii

2012-03-01T23:59:59.000Z

275

Lignin as Both Fuel and Fusing Binder in Briquetted Anthracite Fines for Foundry Coke Substitute.  

E-Print Network (OSTI)

??Lignin that had been extracted from Kraft black liquor was investigated as a fusing binder in briquetted anthracite fines for a foundry coke substitute. Cupola… (more)

Lumadue, Matthew

2012-01-01T23:59:59.000Z

276

Prediction of demand trends of coking coal in China based on grey linear regression composition model  

Science Journals Connector (OSTI)

The scarce of coking coal resources in China results in its short supply. By establishing a grey linear regression composition model, this paper has greatly improved the inadequacy of grey system prediction model and regression analysis method in trend prediction and finished the prediction of demand trends of coking coal in China with this model. As result of the prediction, it is estimated that in the next decade, the demand for coking coal in China will experience a growth trend; China's demand for coking coal will reach more than 1.535 billion tons by 2015, reach the maximum of 1.639 billion tons by 2020 and drop in 2025.

Hai-Dong Zhou; Qiang Wu; Min Fang; Zhong-Bao Ren; Li-Fei Jin

2013-01-01T23:59:59.000Z

277

Balance of supply and demand in the Russian market for coking-coal concentrates  

Science Journals Connector (OSTI)

Various methods are considered for calculating the balance of supply and demand in the Russian market for coking-coal concentrates within the planning (prediction) period....

V. A. Brodskii

2010-11-01T23:59:59.000Z

278

Co-gasification of biomass with coal and oil sands coke in a drop tube furnace.  

E-Print Network (OSTI)

??Chars were obtained from individual fuels and blends with different blend ratios of coal, coke and biomass in Drop Tube Furnace at different temperatures. Based… (more)

Gao, Chen

2010-01-01T23:59:59.000Z

279

MOLECULAR COMPOSITION OF NEEDLE COKE FEEDSTOCKS AND MESOPHASE DEVELOPMENT DURING CARBONIZATION.  

E-Print Network (OSTI)

??This study investigates the molecular composition of fluid catalytic cracking (FCC) decant oil and its derivatives that are used as feedstocks for delayed coking to… (more)

Wang, Guohua

2005-01-01T23:59:59.000Z

280

Pyrolysis behavior of coal and petroleum coke at high temperature and high pressure.  

E-Print Network (OSTI)

??While pyrolysis of coal is a well-studied thermal process, little is known about pressurized pyrolysis of coal and petroleum coke. This study aims to interpret… (more)

Wagner, David Ray

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Development Of Reclamation Substrates For Alberta Oil Sands Using Mature Fine Tailings And Coke.  

E-Print Network (OSTI)

??Mature fine tailings and coke are waste products of the oil sands industry with potential for reclamation. A greenhouse study assessed whether substrates of various… (more)

Luna-Wolter, Gabriela L.

2012-01-01T23:59:59.000Z

282

Investigating factors that influence carbon dissolution from Coke into Molten iron.  

E-Print Network (OSTI)

??The need for more efficient blast furnaces is even greater now that there are stricter environmental regulations on greenhouse gas (GHG) emissions. Coke within the… (more)

Cham, S. Tsuey

2007-01-01T23:59:59.000Z

283

Simulation of Combustion and Thermal-flow Inside a Petroleum Coke Rotary Calcining Kiln.  

E-Print Network (OSTI)

??Calcined coke is the best material for making carbon anodes for smelting of alumina to aluminum. Calcining is an energy intensive industry and a significant… (more)

Zhang, Zexuan

2007-01-01T23:59:59.000Z

284

Coke yield and transport processes in agglomerates of bitumen and solids.  

E-Print Network (OSTI)

??Agglomerate formation is a common phenomenon that can cause operating problems in the fluid coking reactor. When agglomerates form they provide longer diffusion paths of… (more)

Ali, Mohamed Ali Hassan

2010-01-01T23:59:59.000Z

285

Characterization of Coke Properties at Tuyere Level of an Operating Blast Furnace.  

E-Print Network (OSTI)

??Coke performance in an operating blast furnace is often empirically related to popular bench-scale tests, which are performed at relative much lower temperatures. Due to… (more)

Ye, Zhuozhu

2014-01-01T23:59:59.000Z

286

Preparation of Activated Carbon from Oil Sands Coke by Chemical and Physical Activation Techniques.  

E-Print Network (OSTI)

??Oil sands coke is a by-product resulting from the upgrading of heavy crude bitumen to light synthetic oil. This research investigates the preparation of activated… (more)

Morshed, Golam

2012-01-01T23:59:59.000Z

287

The effect of diabietic acid on the coking of oxidised solvent-extracted coal.  

E-Print Network (OSTI)

??Refcoal is a refined carbon source obtained by extraction of coal with dimethylformamide (DMF). During the coking process, Refcoal goes through a mesophase (fluid) stage… (more)

Ludere, Margaret Tshimangadzo

2008-01-01T23:59:59.000Z

288

Integration of stripping of fines slurry in a coking and gasification process  

DOE Patents (OSTI)

In an integrated fluid coking and gasification process wherein a stream of fluidized solids is passed from a fluidized bed coking zone to a second fluidized bed and wherein entrained solid fines are recovered by a wet scrubbing process and wherein the resulting solids-liquid slurry is stripped to remove acidic gases, the stripped vapors of the stripping zone are sent to the gas cleanup stage of the gasification product gas. The improved stripping integration is particularly useful in the combination coal liquefaction process, fluid coking of bottoms of the coal liquefaction zone and gasification of the product coke.

DeGeorge, Charles W. (Chester, NJ)

1980-01-01T23:59:59.000Z

289

The effects of ash and maceral composition of Azdavay and Kurucasile (Turkey) coals on coking properties  

SciTech Connect

In this study, investigations were made as to the effect of the maceral compositions and mineral matter content of Azdavay and Kurucasile coals on the coking property. Chemical and maceral analyses and coking properties were determined for the products of the float-sink procedure. The coking properties were established on the basis of free swelling index and Ruhr dilatometer tests. Maceral analyses showed that as the ash content of a coal containing both high and medium volatile matter increases, its effective maceral proportion decreases, and the coking property is affected in an unfavorable way.

Toroglu, I. [Zonguldak Karaelmas University, Zonguldak (Turkey). Faculty of Engineering

2006-07-01T23:59:59.000Z

290

Local purity distillation with bounded classical communication  

SciTech Connect

Local pure states are an important resource for quantum computing. The problem of distilling local pure states from mixed ones can be cast in an information theoretic paradigm. The bipartite version of this problem where local purity must be distilled from an arbitrary quantum state shared between two parties, Alice and Bob, is closely related to the problem of separating quantum and classical correlations in the state and in particular, to a measure of classical correlations called the one-way distillable common randomness. In Phys. Rev. A 71, 062303 (2005), the optimal rate of local purity distillation is derived when many copies of a bipartite quantum state are shared between Alice and Bob, and the parties are allowed unlimited use of a unidirectional dephasing channel. In the present paper, we extend this result to the setting in which the use of the channel is bounded. We demonstrate that in the case of a classical-quantum system, the expression for the local purity distilled is efficiently computable and provide examples with their tradeoff curves.

Krovi, Hari; Devetak, Igor [Communication Sciences Institute, University of Southern California, Los Angeles, California 90089 (United States)

2007-07-15T23:59:59.000Z

291

Local purity distillation with bounded classical communication  

E-Print Network (OSTI)

Local pure states are an important resource for quantum computing. The problem of distilling local pure states from mixed ones can be cast in an information theoretic paradigm. The bipartite version of this problem where local purity must be distilled from an arbitrary quantum state shared between two parties, Alice and Bob, is closely related to the problem of separating quantum and classical correlations in the state and in particular, to a measure of classical correlations called the one-way distillable common randomness. In Phys. Rev. A 71, 062303 (2005), the optimal rate of local purity distillation is derived when many copies of a bipartite quantum state are shared between Alice and Bob, and the parties are allowed unlimited use of a unidirectional dephasing channel. In the present paper, we extend this result to the setting in which the use of the channel is bounded. We demonstrate that in the case of a classical-quantum system, the expression for the local purity distilled is efficiently computable and provide examples with their tradeoff curves.

Hari Krovi; Igor Devetak

2007-05-28T23:59:59.000Z

292

Design of processes with reactive distillation line diagrams  

SciTech Connect

On the basis of the transformation of concentration coordinates, the concept of reactive distillation lines is developed. It is applied to study the feasibility of a reactive distillation with an equilibrium reaction on all trays of a distillation column. The singular points in the distillation line diagrams are characterized in terms of nodes and saddles. Depending on the characterization of the reactive distillation line diagrams, it can be decided whether a column with two feed stages is required. On the basis of the reaction space concept, a procedure for identification of reactive distillation processes is developed, in which the reactive distillation column has to be divided into reactive and nonreactive sections. This can be necessary to overcome the limitations in separation which result from the chemical equilibrium. The concentration profile of this combined reactive/nonreactive distillation column is estimated using combined reactive/nonreactive distillation lines.

Bessling, B. [BASF Ludwigshafen (Germany). Engineering Research and Development] [BASF Ludwigshafen (Germany). Engineering Research and Development; Schembecker, G.; Simmrock, K.H. [Univ. of Dortmund (Germany). Dept. of Chemical Engineering] [Univ. of Dortmund (Germany). Dept. of Chemical Engineering

1997-08-01T23:59:59.000Z

293

Developing indicators for the assessment and proper management of the different levels of exposure to polycyclic aromatic hydrocarbons (PAH)s generally associated with coke-oven workers.  

E-Print Network (OSTI)

??Coke ovens may occur in the aluminium, steel, graphite, electrical, and construction industries. In the work area coke-oven workers may be exposed to various chemical… (more)

Wang, Tianyuan

2011-01-01T23:59:59.000Z

294

CHARACTERIZATION OF COAL- AND PETROLEUM-DERIVED BINDER PITCHES AND THE INTERACTION OF PITCH/COKE MIXTURES IN PRE-BAKED CARBON ANODES.  

E-Print Network (OSTI)

??Carbon anodes are manufactured from calcined petroleum coke (i.e. sponge coke) and recycled anode butts as fillers, and coal tar pitch (SCTP) as the binder.… (more)

Suriyapraphadilok, Uthaiporn

2008-01-01T23:59:59.000Z

295

The effects of petroleum coke amendments on macrophytes and aquatic invertebrates in northern Alberta, Canada constructed wetlands.  

E-Print Network (OSTI)

??Oil-sands operators of Fort McMurray, Alberta produce six million t/y of petroleum coke. The use of coke to stabilize clay-dominated mine tailings in constructed wetlands… (more)

Baker, Leanne F.

2007-01-01T23:59:59.000Z

296

Spot Distillate & Crude Oil Prices  

Gasoline and Diesel Fuel Update (EIA)

5 5 Notes: Retail distillate prices follow the spot distillate markets, and crude oil prices have been the main driver behind distillate spot price increases until recently. Crude oil rose about 36 cents per gallon from its low point in mid February 1999 to the middle of January 2000. Over this same time period, New York Harbor spot heating oil had risen about 42 cents per gallon, reflecting both the crude price rise and a return to a more usual seasonal spread over the price of crude oil. The week ending January 21, heating oil spot prices in the Northeast spiked dramatically to record levels, closing on Friday at $1.26 per gallon -- up 50 cents from the prior week. Gulf Coast prices were not spiking, but were probably pulled slightly higher as the New York Harbor market began to

297

Entanglement Distillation Protocols and Number Theory  

E-Print Network (OSTI)

We show that the analysis of entanglement distillation protocols for qudits of arbitrary dimension $D$ benefits from applying basic concepts from number theory, since the set $\\zdn$ associated to Bell diagonal states is a module rather than a vector space. We find that a partition of $\\zdn$ into divisor classes characterizes the invariant properties of mixed Bell diagonal states under local permutations. We construct a very general class of recursion protocols by means of unitary operations implementing these local permutations. We study these distillation protocols depending on whether we use twirling operations in the intermediate steps or not, and we study them both analitically and numerically with Monte Carlo methods. In the absence of twirling operations, we construct extensions of the quantum privacy algorithms valid for secure communications with qudits of any dimension $D$. When $D$ is a prime number, we show that distillation protocols are optimal both qualitatively and quantitatively.

H. Bombin; M. A. Martin-Delgado

2005-03-01T23:59:59.000Z

298

Entanglement distillation protocols and number theory  

SciTech Connect

We show that the analysis of entanglement distillation protocols for qudits of arbitrary dimension D benefits from applying basic concepts from number theory, since the set Z{sub D}{sup n} associated with Bell diagonal states is a module rather than a vector space. We find that a partition of Z{sub D}{sup n} into divisor classes characterizes the invariant properties of mixed Bell diagonal states under local permutations. We construct a very general class of recursion protocols by means of unitary operations implementing these local permutations. We study these distillation protocols depending on whether we use twirling operations in the intermediate steps or not, and we study them both analytically and numerically with Monte Carlo methods. In the absence of twirling operations, we construct extensions of the quantum privacy algorithms valid for secure communications with qudits of any dimension D. When D is a prime number, we show that distillation protocols are optimal both qualitatively and quantitatively.

Bombin, H.; Martin-Delgado, M.A. [Departamento de Fisica Teorica I, Universidad Complutense, 28040 Madrid (Spain)

2005-09-15T23:59:59.000Z

299

Predicting CSR and CRI of coke on the basis of the chemical and petrographic parameters of the coal batch and the coking conditions  

Science Journals Connector (OSTI)

A model is developed for predicting the postreactive strength CSR and reactivity CRI of coke. The model adequately reflects the dependence of ... on the chemical and petrographic parameters of the coal batch, tak...

A. S. Stankevich; R. R. Gilyazetdinov; N. K. Popova; D. A. Koshkarov

2008-09-01T23:59:59.000Z

300

Modification of sub-bituminous coal by steam treatment: Caking and coking properties  

Science Journals Connector (OSTI)

A Chinese sub-bituminous Shenfu (SF) coal was steam treated under atmospheric pressure and the caking and coking properties of the treated coals were evaluated by caking indexes (GRI) and crucible coking characterizations. The results show that steam treatment can obviously increase the GRI of SF coal. When the steam treated coals were used in the coal blends instead of SF raw coal, the micro-strength index (MSI) and particle coke strength after reaction (PSR) of the coke increased, and particle coke reactivity index (PRI) decreased, which are beneficial for metallurgical coke to increase the gas permeability in blast furnace. The quality of the coke obtained from 8% of 200 °C steam treated SF coal in coal blends gets to that of the coke obtained from the standard coal blends, in which there was no SF coal addition in the coal blends. The removal of oxygen groups, especially hydroxyl group thus favoring the breakage of the coal macromolecules and allowing the treated coal formation of much more amount of hydrocarbons, may be responsible for the modified results. The mechanism of the steam treatment was proposed based on the elemental analysis, thermo gravimetric (TG) and FTIR spectrometer characterizations of the steam treated coal.

Hengfu Shui; Haiping Li; Hongtao Chang; Zhicai Wang; Zhi Gao; Zhiping Lei; Shibiao Ren

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Study on Further Treatment of Coal Coking Wastewater by Ultrasound Wave, Fenton's Reagent and Coagulation  

Science Journals Connector (OSTI)

The study on further treatment of coal coking wastewater by ultrasound wave, Fenton's reagent and coagulation was carried out in this paper at the first time, Furthermore, this paper discussed the optimum cooperative reaction condition of their combined ... Keywords: ultrasound wave, coke plant wastewater, Fenton reagent, coagulation

Jun Shi; Liangbo Zhang

2009-10-01T23:59:59.000Z

302

Analytical input-output and supply chain study of China's coke and steel sectors  

E-Print Network (OSTI)

I design an input-output model to investigate the energy supply chain of coal-coke-steel in China. To study the demand, supply, and energy-intensity issues for coal and coke from a macroeconomic perspective, I apply the ...

Li, Yu, 1976-

2004-01-01T23:59:59.000Z

303

Cyanide Leaching from Soil Developed from Coking Plant Purifier Waste as Influenced by Citrate  

Science Journals Connector (OSTI)

...Coking Plant Purifier Waste as Influenced by Citrate...developed from gas purifier waste was investigated. Without...developed from gas purifier waste near a former coking...for the iron and steel industries. Their gas was a by-product...2003). During coal gasification, hydrogen cyanide...

Tim Mansfeldt; Heike Leyer; Kurt Barmettler; Ruben Kretzschmar

304

Influence of coal on coke properties and blast-furnace operation  

SciTech Connect

With unstable coal supplies and properties and a fluctuating content of coking coal in the batch at OAO Zapadno-Sibirskii Metallurgicheskii Kombinat (ZSMK) and of bituminous coal at Kuznetskaya enrichment facility, it is important to optimize the rank composition of the batch for coke production.

G.R. Gainieva; L.D. Nikitin [OAO Zapadno-Sibirskii Metallurgicheskii Kombinat (Russian Federation)

2007-07-01T23:59:59.000Z

305

Heat integrated distillation in a plate-packing HIDiC:.  

E-Print Network (OSTI)

??Distillation is an energy intensive separation method. To improve the exergetic efficiency of a distillation column, it can be designed as a heat integrated distillation… (more)

Krikken, T.

2011-01-01T23:59:59.000Z

306

Carbonization of Coal Effects of Variation of Rate of Heating during the Carbonization of a Typical Coking Coal  

Science Journals Connector (OSTI)

Carbonization of Coal Effects of Variation of Rate of Heating during the Carbonization of a Typical Coking Coal ...

William B. Warren

1935-01-01T23:59:59.000Z

307

Carbonization of Coal Evaluation of Effects of Rate of Heating and of Maximum Temperature on Pyrolysis of a Coking Coal  

Science Journals Connector (OSTI)

Carbonization of Coal Evaluation of Effects of Rate of Heating and of Maximum Temperature on Pyrolysis of a Coking Coal ...

William B. Warren

1935-01-01T23:59:59.000Z

308

Atmospheric Oxidation of Coal at Moderate Temperatures. Effect of Oxidation on the Carbonizing Properties of Representative Coking Coals.  

Science Journals Connector (OSTI)

Atmospheric Oxidation of Coal at Moderate Temperatures. ... Effect of Oxidation on the Carbonizing Properties of Representative Coking Coals. ...

L Schmidt; J Elder; J Davis

1940-01-01T23:59:59.000Z

309

Acidity deterioration and coke deposition in a HZSM5 zeolite in the MTG process  

Science Journals Connector (OSTI)

Summary The total acidity deterioration and the acidity strength distribution of a catalyst prepared from a H-ZSM-5 zeolite has been studied in the MTG process carried out in catalytic chamber and in an isothermal fixed bed integral reactor. The acidity deterioration has been related to coke deposition. The evolution of the acidic structure and of coke deposition has been analysed in situ by diffuse reflectance FTIR in a catalytic chamber. The effect of operating conditions (time on stream and temperature) on acidity deterioration, coke deposition and coke nature has been studied from experiments in a fixed integral reactor. The technique for studying acidity yields a reproducible measurement of total acidity and acidity strength distribution of the catalyst deactivated by coke. The NH3 adsorption-desorption is measured by combination of scanning differential calorimetry and the FTIR analysis of the products desorbed.

A.T. Aguayo; P.L. Benito; A.G. Gayubo; M. Olazar; J. Bilbao

1994-01-01T23:59:59.000Z

310

Innovative coke oven gas cleaning system for retrofit applications  

SciTech Connect

Bethlehem Steel Corporation (BSC), in conjunction with the Department of Energy (DOE) is conducting a Clean Coal Technology (CCT) project at its Sparrows Point, Maryland Coke Oven Plant. This project combines several existing technologies into an integrated system for removing impurities from Coke Oven Gas (COG) to make it an acceptable fuel. DOE is providing cost-sharing under a Cooperative Agreement with BSC. This Cooperative Agreement requires BSC to develop and conduct an Environmental Monitoring Plan (EMP) for the Clean Coal Technology project and to report the status of the EMP on a quarterly basis. This report is the third quarterly status report of the EMP. It covers the Environmental Monitoring Plan activities for the full year of 1991 from January 1, 1991 through December 31, 1991, including the forth quarter. See Sections 2, 3 and 4 for status reports of the Project Installation and Commissioning, the Environmental Monitoring activities and the Compliance Monitoring results for the period. Section 5 contains a list of Compliance Reports submitted to regulatory agencies during the period. The EMP describes in detail the environmental monitoring activities to be performed during the project execution. The purpose of the EMP is to: (1) document the extent of compliance of monitoring activities, i.e. those monitoring required to meet permit requirements, (2) confirm the specific impacts predicted in the National Environmental Policy Act documentation, and (3) establish an information base for the assessment of the environmental performance of the technology demonstrated by the project.

Not Available

1992-10-16T23:59:59.000Z

311

Hydrogen production from steam reforming of coke oven gas and its utility for indirect reduction of iron oxides in blast  

E-Print Network (OSTI)

of coal and coke are consumed for heating and reducing iron oxides [2,3]. As a result, BFs have becomeHydrogen production from steam reforming of coke oven gas and its utility for indirect reduction 2012 Available online 18 June 2012 Keywords: Steam reforming Hydrogen and syngas production Coke oven

Leu, Tzong-Shyng "Jeremy"

312

Modelling of a coke oven heating wall M. Landreau, D. Isler, Centre de Pyrolyse de Marienau (CPM)  

E-Print Network (OSTI)

- 1 - Modelling of a coke oven heating wall M. Landreau, D. Isler, Centre de Pyrolyse de Marienau with thermomechanical modelling of a coke oven heating wall. The objective is to define the safe limits of coke oven of walls, roof and larry car, pre-stresses (anchoring system), lateral pressure due to coal pushing A 3D

Boyer, Edmond

313

SELF-OPTIMIZING CONTROL: A DISTILLATION CASE Sigurd Skogestad  

E-Print Network (OSTI)

for the controlled variables. The idea is applied to propane-propylene distillation case study. Keywords: ChemicalSELF-OPTIMIZING CONTROL: A DISTILLATION CASE STUDY Sigurd Skogestad Department of Chemical

Skogestad, Sigurd

314

Utility-based Information Distillation Over Temporally Sequenced Documents  

E-Print Network (OSTI)

Utility-based Information Distillation Over Temporally Sequenced Documents Yiming Yang Language to information distil- lation over temporally ordered documents, and proposes a novel evaluation scheme, flexible user feedback, evaluation methodology. 1. INTRODUCTION Tracking new and relevant information from

Murphy, Robert F.

315

Extraction of tocopherols from deodorizer distillates: laboratory-scale evaluations  

E-Print Network (OSTI)

The tocopherols are valuable components of deodorizer distillate. Due to the limitations in the existing extraction methods, it is imperative that new processing parameters for extraction and concentration of tocopherols from deodorizer distillate...

Zhang, Xiaoyan

2012-06-07T23:59:59.000Z

316

Minimum Energy Diagrams for Multieffect Distillation Arrangements  

E-Print Network (OSTI)

and the energy use from this process accounts for an estimated 3% of the world energy consumption.1 With rising on the overall plant energy consumption. The use of heat integration combined with complex config- urations distillation ar- rangements. An easy form of comparison for energy consumption is the minimum vapor flow rate

Skogestad, Sigurd

317

Naphthenic acid corrosion in crude distillation units  

SciTech Connect

This paper summarizes corrosion experience in crude distillation units processing highly naphthenic California crude oils. Correlations have been developed relating corrosion rates to temperature and total acid number. There is a threshold acid number in the range of 1.5 to 2 mg KOH/g below which corrosion is minimal. High concentrations of hydrogen sulfide may raise this threshold value.

Piehl, R.L.

1988-01-01T23:59:59.000Z

318

Heat Exchanger Technologies for Distillation Columns  

E-Print Network (OSTI)

Conference, Houston, TX, April 16-19, 2002 Downcomer Ii IMass Transfer Ales I Hem Transrer Surf':lce I I I i i i i IDo-.>m" I Vapour Flow Figure 5. Alternative Inlegral Condenser Design Engineers unfamiliar with the thermodynamics of distillation...

Polley, G. T.

319

Interpolation of recurrence and hashing entanglement distillation protocols  

SciTech Connect

We construct interesting entanglement distillation protocols by interpolating between the recurrence and hashing protocols. This leads to asymptotic two-way distillation protocols, resulting in an improvement of the distillation rate for all mixed Bell diagonal entangled states, even for the ones with very high fidelity. We also present a method for how entanglement-assisted distillation protocol can be converted into nonentanglement-assisted protocols with the same yield.

Vollbrecht, Karl Gerd H.; Verstraete, Frank [Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Str. 1, D-85748 Garching (Germany)

2005-06-15T23:59:59.000Z

320

Model Predictive Control of a Kaibel Distillation Column  

E-Print Network (OSTI)

Model Predictive Control of a Kaibel Distillation Column Martin Kvernland Ivar Halvorsen Sigurd (e-mail: skoge@ntnu.no) Abstract: This is a simulation study on controlling a Kaibel distillation column with model predictive control (MPC). A Kaibel distillation column has several advantages compared

Skogestad, Sigurd

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Separation of Azeotropic Mixtures in Closed Batch Distillation Arrangements  

E-Print Network (OSTI)

Separation of Azeotropic Mixtures in Closed Batch Distillation Arrangements S. Skouras and S, Norway SCOPE OF THE PROJECT ·How can we separate ternary mixtures in closed batch distillation-up period is required, followed by a heteroazeotropic distillation step (Figure 3) Modified: The separation

Skogestad, Sigurd

322

Human versus Machine in the Topic Distillation Task Mingfang Wu  

E-Print Network (OSTI)

Human versus Machine in the Topic Distillation Task Mingfang Wu 1 , Gheorghe Muresan2 , Alistair Mc. The focus is on comparing humans and machine algorithms in terms of performance in a topic distillation task demonstrated that machines can perform nearly as well as people on the topic distillation task. Given a system

Wu, Mingfang

323

RIS0-M-2319 RISK ANALYSIS OF A DISTILLATION UNIT  

E-Print Network (OSTI)

RIS0-M-2319 RISK ANALYSIS OF A DISTILLATION UNIT J. R. Taylor**, 0. Hansen*, C. Jensen*, 0. F. A risk analysis of a batch distillation unit is de- scribed. The analysis has been carried out at several.2. Objectives and organisation 5 1.2.2. Philosophy and approach 6 1.3.1. The distillation unit 8 1

324

Blog Distillation via Sentiment-Sensitive Link Analysis  

E-Print Network (OSTI)

Blog Distillation via Sentiment-Sensitive Link Analysis Giacomo Berardi, Andrea Esuli, Fabrizio report a new approach to blog distillation, defined as the task in which, given a user query, the system of the TREC Blog Track. 1 Introduction Blog distillation is a subtask of the blog search task. It is defined

Sebastiani, Fabrizio

325

Many copies may be required for entanglement distillation John Watrous  

E-Print Network (OSTI)

Many copies may be required for entanglement distillation John Watrous Department of Computer state shared between two parties is said to be distillable if, by means of a protocol involving only |+ = (|00 + |11 )/ 2. In this paper it is proved that there exist states that are distillable

Watrous, John

326

Multiple Steady States in Ideal Two-Product Distillation  

E-Print Network (OSTI)

Multiple Steady States in Ideal Two-Product Distillation Elling W. Jacobsen and Sigurd Skogestad Chemical Engineering Dept., University of Trondheim-NTH, N-7034 Trondheim, Norway Simple distillation and compositions in the column. Introduction Multiple steady states (multiplicity) in distillation columns have

Skogestad, Sigurd

327

Bloggers as Experts Feed Distillation using Expert Retrieval Models  

E-Print Network (OSTI)

Bloggers as Experts Feed Distillation using Expert Retrieval Models Krisztian Balog kbalog Kruislaan 403, 1098 SJ Amsterdam ABSTRACT We address the task of (blog) feed distillation: to find blogs- ness as feed distillation strategies. The two models capture the idea that a human will often search

de Rijke, Maarten

328

MULTIVESSEL BATCH DISTILLATION 1 SIGURD SKOGESTAD 2 , BERND WITTGENS,  

E-Print Network (OSTI)

MULTIVESSEL BATCH DISTILLATION 1 SIGURD SKOGESTAD 2 , BERND WITTGENS, EVA SÃ?RENSEN 3 and RAJAB distillation schemes, including the inverted column and the middle vessel column. The total reflux operation of the multivessel batch distillation column was presented recently, and the main contribution of this paper

Skogestad, Sigurd

329

Effect of Number of Fractionating Trays on Reactive Distillation Performance  

E-Print Network (OSTI)

Effect of Number of Fractionating Trays on Reactive Distillation Performance Muhammad A. Al and rectifying sec- tions of a reacti®e distillation column can degrade performance. This effect, if true®e distillation columns cannot use conser®ati®e estimates of tray numbers, that is, we cannot simply add excess

Al-Arfaj, Muhammad A.

330

Multiple copy distillation and purification of phase diffused squeezed states  

E-Print Network (OSTI)

We provide a detailed theoretical analysis of multiple copy purification and distillation protocols for phase diffused squeezed states of light. The standard iterative distillation protocol is generalized to a collective purification of an arbitrary number of N copies. We also derive a semi-analytical expression for the asymptotic limit of the iterative distillation and purification protocol and discuss its properties.

Petr Marek; Jaromir Fiurasek; Boris Hage; Alexander Franzen; James DiGugliemo; Roman Schnabel

2007-08-10T23:59:59.000Z

331

Column Initialization 1 Initializing Distillation Column Models 1  

E-Print Network (OSTI)

Column Initialization 1 Initializing Distillation Column Models 1 Roger Fletcher \\Lambda with the optimisation of distillation column models by non­ linear programming are considered. The paper presents of the distillation column model. A certain limiting case of the column model is examined, that of infinite reflux

Dundee, University of

332

MULTIVESSEL BATCH DISTILLATION 1 SIGURD SKOGESTAD 2 , BERND WITTGENS,  

E-Print Network (OSTI)

MULTIVESSEL BATCH DISTILLATION 1 SIGURD SKOGESTAD 2 , BERND WITTGENS, EVA S RENSEN 3 and RAJAB distillation schemes, including the inverted column and the middle vessel column. The total re ux operation of the multivessel batch distillation column was presented recently, and the main contribution of this paper

Skogestad, Sigurd

333

Energy efficient distillation Ivar J. Halvorsen a,*, Sigurd Skogestad b  

E-Print Network (OSTI)

Energy efficient distillation Ivar J. Halvorsen a,*, Sigurd Skogestad b a SINTEF ICT, Applied Keywords: Distillation Minimum energy Energy saving Dividing wall column Petlyuk arrangement Vmin-diagram a b s t r a c t Distillation is responsible for a significant amount of the energy consumption

Skogestad, Sigurd

334

Active constraint regions for optimal operation of distillation columns  

E-Print Network (OSTI)

Active constraint regions for optimal operation of distillation columns Magnus G. Jacobsen the control structure of distillation columns, with optimal operation in mind, it is important to know how for distillation columns change with variations in energy cost and feed flow rate. The production of the most

Skogestad, Sigurd

335

Gas treatment and by-products recovery of Thailand`s first coke plant  

SciTech Connect

Coke is needed in the blast furnace as the main fuel and chemical reactant and the main product of a coke plant. The second main product of the coke plant is coke oven gas. During treatment of the coke oven gas some coal chemicals like tar, ammonia, sulphur and benzole can be recovered as by-products. Since the market prices for these by-products are rather low and often erratic it does not in most cases justify the investment to recover these products. This is the reason why modern gas treatment plants only remove those impurities from the crude gas which must be removed for technical and environmental reasons. The cleaned gas, however, is a very valuable product as it replaces natural gas in steel work furnaces and can be used by other consumers. The surplus can be combusted in the boiler of a power plant. A good example for an optimal plant layout is the new coke oven facility of Thai Special Steel Industry (TSSI) in Rayong. The paper describes the TSSI`s coke oven gas treatment plant.

Diemer, P.E.; Seyfferth, W. [Krupp Uhde GmbH, Dortmund (Germany)

1997-12-31T23:59:59.000Z

336

Integrated two stage coking and steam cracking process and apparatus therefor  

SciTech Connect

The invention relates to an improvement in an integrated, two stage coking and steam cracking process for the production of unsaturated light hydrocarbons. A heavy hydrocarbonaceous oil is first coked in a fluidized bed coking zone. The vaporous conversion product is passed to a dilute phase. High temperature cracking in the presence of steam is carried out on the vaporous coker conversion product by injecting into the vapors a stream of hot coke particles at a sufficient temperature and in sufficient amount to raise the coker vapors to steam cracking temperature and supply the endothermic heat of reaction. Solids are separated from product gas in a gas-solids separation zone such as one or more cyclones and sent to the fluid coking zone and the gas is quenched to stop olefin degradation reactions. According to the improvement, relatively low temperature steam is introduced into contact with the separated solids to superheat the steam and cool the solids. Suitably this is effected in a riser on the cyclone dipleg. The solids, after having given up heat to the steam, pass into the coking zone and the superheated steam passes into the dilute phase and serves as part of the dilution steam therefor. Conservation of fuel and mitigation of coke on reactor walls and equipment are advantages of the process.

Oldweiler, M.E.

1983-10-25T23:59:59.000Z

337

Laser ultrasonic furnace tube coke monitor. Quarterly technical progress report No. 1, May 1--August 1, 1998  

SciTech Connect

The overall aim of the project is to demonstrate the performance and practical use of a laser ultrasonic probe for measuring the thickness of coke deposits located within the high temperature tubes of a thermal cracking furnace. This aim will be met by constructing an optical probe that will be tested using simulated coke deposits that are positioned inside of a bench-scale furnace. Successful development of the optical coke detector will provide industry with the only available method for on-line measurement of coke deposits. The optical coke detector will have numerous uses in the refining and petrochemical sectors including monitoring of visbreakers, hydrotreaters, delayed coking units, vacuum tower heaters, and various other heavy oil heating applications where coke formation is a problem. The coke detector will particularly benefit the olefins industry where high temperature thermal crackers are used to produce ethylene, propylene, butylene and other important olefin intermediates. The ethylene industry requires development of an on-line method for gauging the thickness of coke deposits in cracking furnaces because the current lack of detailed knowledge of coke deposition profiles introduces the single greatest uncertainty in the simulation and control of modern cracking furnaces. The laser ultrasonic coke detector will provide operators with valuable new information allowing them to better optimize the decoking turnaround schedule and therefore maximize production capacity.

NONE

1998-08-15T23:59:59.000Z

338

Nuclear Magnetic Resonance and Ruthenium Ion Catalyzed Oxidation Reaction Analysis for Further Development of Aromatic Ring Size through the Heat Treatment of Coking Coals at >500 °C  

Science Journals Connector (OSTI)

The strategy for coal blending is based on many empirical viewpoints, while scientific findings are believed to develop new criteria for obtaining high-quality coke from not only coking coals but also coking coals coupled with noncoking coals. ... by TEM and by comparing the microtextures of their cokes. ...

Koh Kidena; Koji Matsumoto; Satoru Murata; Masakatsu Nomura

2004-10-23T23:59:59.000Z

339

Annual book of ASTM Standards 2008. Section Five. Petroleum products, lubricants, and fossil fuels. Volume 05.06. Gaseous fuels; coal and coke  

SciTech Connect

The first part covers standards for gaseous fuels. The second part covers standards on coal and coke including the classification of coals, determination of major elements in coal ash and trace elements in coal, metallurgical properties of coal and coke, methods of analysis of coal and coke, petrogrpahic analysis of coal and coke, physical characteristics of coal, quality assurance and sampling.

NONE

2008-09-15T23:59:59.000Z

340

Annual book of ASTM Standards 2005. Section Five. Petroleum products, lubricants, and fossil fuels. Volume 05.06. Gaseous fuels; coal and coke  

SciTech Connect

The first part covers standards for gaseous fuels. The standard part covers standards on coal and coke including the classification of coals, determination of major elements in coal ash and trace elements in coal, metallurgical properties of coal and coke, methods of analysis of coal and coke, petrographic analysis of coal and coke, physical characteristics of coal, quality assurance and sampling.

NONE

2005-09-15T23:59:59.000Z

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Investigation of the effects of heating rate on coking of shale during retorting  

SciTech Connect

The retorting of oil shale distributes organic carbon among three possible products: the liquid product, the noncondensible product, and the residual carbon (coke). The production of coke is detrimental because of the economic effects caused by the loss of organic carbon to this relatively intractable carbon form. Two reference oil shales, a Mahogany zone, Parachute Creek Member, Green River Formation oil shale from Colorado and a Clegg Creek Member, New Albany oil shale from Kentucky, were studied to evaluate the conditions that affect coke production during retorting. The variable that was studied in these experiments was the heating rate during retorting because heating rate has been indicated to have a direct effect on coke production (Burnham and Clarkson 1980). The six heating rates investigated covered the range from 1 to 650/degree/C/h (1.8 to 1169/degree/F/h). The data collected during these experiments were evaluated statistically in order to identify trends. The data for the eastern reference oil shale indicated a decrease in coke formation with increases in the heating rate. The liquid and noncondensible product yields both increased with increasing heating rate. The distribution of products in relation to retort heating rate follows the model suggested by Burnham and Clarkson (1980). Coke production during the retorting of western reference oil shale was found to be constant in relation to heating rate. The liquid product yield increased with increasing heating rate but the trend could not be verified at the 95% confidence level. The coke production observed in these experiments does not follow the prediction of the model. This may indicate that coke formation occurs early in the retorting process and may be limited by the availability of organic materials that form coke. 6 refs., 10 tabs.

Guffey, F.D.; Hunter, D.E.

1988-02-01T23:59:59.000Z

342

Caking and coking properties of the thermal dissolution soluble fraction of a fat coal  

Science Journals Connector (OSTI)

Abstract In the coal blending for coke-making, fat coal has a very important role for the caking and coking properties of the coal blends. In this study, a fat coal was thermally dissolved, and the caking and coking properties of the thermal dissolution soluble factions (TDSFs) from different solvents and temperatures were characterized. It was found that the caking properties of \\{TDSFs\\} were better than that of fat raw coal. The \\{TDSFs\\} obtained from non-polar solvents have a higher caking property than those obtained from polar solvents at the same thermal dissolution (TD) temperature. During TD process, polar solvents can thermally dissolve more polyaromatic compounds into TDSF, thus increasing the softening temperature and decreasing the caking property of the TDSF. For the same TD solvent, the \\{TDSFs\\} obtained from higher temperatures have a lower caking property compared to those obtained from lower temperatures because of more aromatic components and oxygen functional groups entering them. Crucible coking determinations were carried out to evaluate the coking property of the TDSFs. The result suggests that when 5% of TDSF and 5% of non-caking sub-bituminous coal were used instead of the same amount of fat coal and gas coal, respectively in the coal blends, the quality of the coke obtained could get to the level of the coke obtained from the standard coal blends (i.e. without TDSF and sub-bituminous coal). Therefore, the use of TDSF in coal blending for coke-making is one of the effective methods for opening the coking coal resources.

Hengfu Shui; Wenjuan Zhao; Chuanjun Shan; Tao Shui; Chunxiu Pan; Zhicai Wang; Zhiping Lei; Shibiao Ren; Shigang Kang

2014-01-01T23:59:59.000Z

343

Characterization of the origin and distribution of the minerals and phases in metallurgical cokes  

SciTech Connect

Three industrial metallurgical cokes were examined using X-ray diffraction (XRD) and scanning electron microscopy combined with energy dispersive X-ray analysis (SEM/EDS). The study highlighted the difficulties and implications of identifying the inherent crystalline mineral phases in cokes using XRD such that increasing the ashing temperature led to the formation of anhydrite and destruction of metallic iron: microwave plasma ashing resulted in minimal alteration of the original coke mineralogy apart from the formation of bassanite and possibly jarosite. A preliminary scheme to characterize coke minerals is presented such that, physically, minerals can be classified as fine ({lt}50 {mu}m), coarse (50-100 {mu}m), and agglomerate ({gt}1000 {mu}m); chemically, minerals can be grouped as refractory, semirefractory, and reactive, while on the basis of distribution they can be described as discrete, disseminated, or pore inclusions. Quartz, cristobalite, mullite, and high melting point Al-silicates were found to be the predominant refractory phases while low melting point Al-silicates, e.g., containing high fluxing elements such as K, and Fe were the main semirefractory phases present in all cokes. A variety of iron containing phases including pyrrhotite, troilite, iron oxides, metallic iron, and iron silicates were also invariably present in all cokes while calcium phases were found to occur as sulfide, silicates, and phosphates. In general, iron and calcium phases can be categorized as reactive phases with few exceptions such as oldhamite (CaS). The study highlighted that most of the cokes possess a similar mineralogy, with the main distinction being in their relative abundance, particle size, and nature of distribution in the coke matrix. The study provides a basis to develop a mechanistic understanding of the influence of minerals on coke reactivity and strength at high temperatures. 41 refs., 13 figs., 4 tabs.

Sushil Gupta; Maria Dubikova; David French; Veena Sahajwalla [University of New South Wales, Sydney, NSW (Australia). School of Materials Science and Engineering

2007-01-15T23:59:59.000Z

344

Energy efficiency of alternative coke-free metallurgical technologies  

SciTech Connect

Energy analysis is undertaken for the blast-furnace process, for liquid-phase processes (Corex, Hismelt, Romelt), for solid-phase pellet reduction (Midrex, HYL III, LP-V in a shaft furnace), for steel production in systems consisting of a blast furnace and a converter, a Midrex unit and an arc furnace, or a Romelt unit and an arc furnace, and for scrap processing in an arc furnace or in an LP-V shaft furnace. Three blast-furnace processes with sinter and coke are adopted as the basis of comparison, as in: the standard blast-furnace process used in Russia; the improved blast-furnace process with coal-dust injection; and the production of vanadium hot metal from vanadium-bearing titanomagnetite ore (with a subsequent duplex process, ferrovanadium production, and its use in the arc furnace).

V.G. Lisienko; A.V. Lapteva; A.E. Paren'kov [Ural State Technical University - Ural Polytechnic Institute, Yekaterinburg (Russian Federation)

2009-02-15T23:59:59.000Z

345

Secret key distillation from shielded two-qubit states  

E-Print Network (OSTI)

The quantum states corresponding to a secret key are characterized using the so-called private states, where the key part consisting of a secret key is shielded by the additional systems. Based on the construction, it was shown that a secret key can be distilled from bound entangled states. In this work, I consider the shielded two-qubit states in a key-distillation scenario and derive the conditions under which a secret key can be distilled using the recurrence protocol or the two-way classical distillation, advantage distillation together with one-way postprocessing. From the security conditions, it is shown that a secret key can be distilled from bound entangled states in a much wider range. In addition, I consider the case that in which white noise is added to quantum states and show that the classical distillation protocol still works despite a certain amount of noise although the recurrence protocol does not.

Joonwoo Bae

2008-03-03T23:59:59.000Z

346

Secret key distillation from shielded two-qubit states  

SciTech Connect

The quantum states corresponding to a secret key are characterized using the so-called private states, where the key part consisting of a secret key is shielded by the additional systems. Based on the construction, it was shown that a secret key can be distilled from bound entangled states. In this work, I consider the shielded two-qubit states in a key-distillation scenario and derive the conditions under which a secret key can be distilled using the recurrence protocol or the two-way classical distillation, advantage distillation together with one-way postprocessing. From the security conditions, it is shown that a secret key can be distilled from bound entangled states in a much wider range. In addition, I consider the case that in which white noise is added to quantum states and show that the classical distillation protocol still works despite a certain amount of noise although the recurrence protocol does not.

Bae, Joonwoo [School of Computational Sciences, Korea Institute for Advanced Study, Seoul 130-722 (Korea, Republic of)

2010-05-15T23:59:59.000Z

347

Distillate Stocks Expected to Remain Low  

Gasoline and Diesel Fuel Update (EIA)

5 5 Notes: When EIA's demand forecast is combined with its outlook for production and net imports, distillate stocks are projected to remain low for the rest of the year. - Stocks are beginning at very low levels. The September 1 distillate fuel stock level (112 million barrels) is nearly 20% less than last year, and about 15% below the 10 year average for end of August levels. - But stocks on the East Coast, at 39.8 million barrels, are 39% behind year-ago levels, and about a similar percentage below end-of-August 10-year average levels. Over the last 10 years, the average stock build from the end of August through the end of November has been about 10 million barrels. We are forecasting about a 12 million barrel build, which does not reach the normal band. Forecast stocks peak at the end of November at 127 million

348

Contact structure for use in catalytic distillation  

DOE Patents (OSTI)

A method is described for conducting catalytic chemical reactions and fractionation of the reaction mixture comprising feeding reactants into a distillation column reactor, contracting said reactant in liquid phase with a fixed bed catalyst in the form of a contact catalyst structure consisting of closed porous containers containing the catalyst for the reaction and a clip means to hold and support said containers, which are disposed above, i.e., on the distillation trays in the tower. The trays have weir means to provide a liquid level on the trays to substantially cover the containers. In other words, the trays function in their ordinary manner with the addition thereto of the catalyst. The reaction mixture is concurrently fractionated in the column. 7 figs.

Jones, E.M. Jr.

1984-03-27T23:59:59.000Z

349

Contact structure for use in catalytic distillation  

DOE Patents (OSTI)

A method and apparatus are disclosed for conducting catalytic chemical reactions and fractionation of the reaction mixture, comprising and feeding reactants into a distillation column reactor contracting said reactant in a liquid phase with a fixed bed catalyst in the form of a contact catalyst structure, consisting of closed porous containers containing the catalyst for the reaction and a clip means to hold and support said containers, which are disposed above, i.e., on the distillation trays in the tower. The trays have weir means to provide a liquid level on the trays to substantially cover the containers. In other words, the trays function in their ordinary manner with the addition thereto of the catalyst. The reaction mixture is concurrently fractionated in the column. 7 figs.

Jones, E.M. Jr.

1985-08-20T23:59:59.000Z

350

Contact structure for use in catalytic distillation  

DOE Patents (OSTI)

A method for conducting catalytic chemical reactions and fractionation of the reaction mixture comprising feeding reactants into a distillation column reactor contracting said reactant in liquid phase with a fixed bed catalyst in the form of a contact catalyst structure consisting of closed porous containers containing the catatlyst for the reaction and a clip means to hold and support said containers, which are disposed above, i.e., on the distillation trays in the tower. The trays have weir means to provide a liquid level on the trays to substantially cover the containers. In other words, the trays function in their ordinary manner with the addition thereto of the catalyst. The reaction mixture is concurrently fractionated in the column.

Jones, Jr., Edward M. (Friendswood, TX)

1984-01-01T23:59:59.000Z

351

Contact structure for use in catalytic distillation  

DOE Patents (OSTI)

A method and apparatus for conducting catalytic chemical reactions and fractionation of the reaction mixture, comprising and feeding reactants into a distillation column reactor contracting said reactant in a liquid phase with a fixed bed catalyst in the form of a contact catalyst structure, consisting of closed porous containers containing the catalyst for the reaction and a clip means to hold and support said containers, which are disposed above, i.e., on the distillation trays in the tower. The trays have weir means to provide a liquid level on the trays to substantially cover the containers. In other words, the trays function in their ordinary manner with the addition thereto of the catalyst. The reaction mixture is concurrently fractionated in the column.

Jones, Jr., Edward M. (Friendswood, TX)

1985-01-01T23:59:59.000Z

352

The attractor mechanism as a distillation procedure  

E-Print Network (OSTI)

In a recent paper it has been shown that for double extremal static spherically symmetric BPS black hole solutions in the STU model the well-known process of moduli stabilization at the horizon can be recast in a form of a distillation procedure of a three-qubit entangled state of GHZ-type. By studying the full flow in moduli space in this paper we investigate this distillation procedure in more detail. We introduce a three-qubit state with amplitudes depending on the conserved charges the warp factor, and the moduli. We show that for the recently discovered non-BPS solutions it is possible to see how the distillation procedure unfolds itself as we approach the horizon. For the non-BPS seed solutions at the asymptotically Minkowski region we are starting with a three-qubit state having seven nonequal nonvanishing amplitudes and finally at the horizon we get a GHZ state with merely four nonvanishing ones with equal magnitudes. The magnitude of the surviving nonvanishing amplitudes is proportional to the macroscopic black hole entropy. A systematic study of such attractor states shows that their properties reflect the structure of the fake superpotential. We also demonstrate that when starting with the very special values for the moduli corresponding to flat directions the uniform structure at the horizon deteriorates due to errors generalizing the usual bit flips acting on the qubits of the attractor states.

Péter Lévay; Szilárd Szalay

2010-04-14T23:59:59.000Z

353

Attractor mechanism as a distillation procedure  

SciTech Connect

In a recent paper it was shown that for double extremal static spherical symmetric BPS black hole solutions in the STU model the well-known process of moduli stabilization at the horizon can be recast in a form of a distillation procedure of a three-qubit entangled state of a Greenberger-Horne-Zeilinger type. By studying the full flow in moduli space in this paper we investigate this distillation procedure in more detail. We introduce a three-qubit state with amplitudes depending on the conserved charges, the warp factor, and the moduli. We show that for the recently discovered non-BPS solutions it is possible to see how the distillation procedure unfolds itself as we approach the horizon. For the non-BPS seed solutions at the asymptotically Minkowski region we are starting with a three-qubit state having seven nonequal nonvanishing amplitudes and finally at the horizon we get a Greenberger-Horne-Zeilinger state with merely four nonvanishing ones with equal magnitudes. The magnitude of the surviving nonvanishing amplitudes is proportional to the macroscopic black hole entropy. A systematic study of such attractor states shows that their properties reflect the structure of the fake superpotential. We also demonstrate that when starting with the very special values for the moduli corresponding to flat directions the uniform structure at the horizon deteriorates due to errors generalizing the usual bit flips acting on the qubits of the attractor states.

Levay, Peter; Szalay, Szilard [Department of Theoretical Physics, Institute of Physics, Budapest University of Technology and Economics, H-1521 Budapest (Hungary)

2010-07-15T23:59:59.000Z

354

Researches on the Chemistry of Coal. Part II. The Resinic Constituents and Coking Propensitie of Coals  

Science Journals Connector (OSTI)

1 March 1922 research-article Researches on the Chemistry of Coal. Part II. The Resinic Constituents and Coking Propensitie of Coals William A. Bone A. R. Pearson E. Sinkinson W. E. Stockings The Royal Society is...

1922-01-01T23:59:59.000Z

355

A relationship for the evaluation o coking values of coal tar pitches from their physical characteristics  

Science Journals Connector (OSTI)

A relationship has been proposed to evaluate the coking values of coal tar pitches from the knowledge of their ... It has been tried on 44 self-prepared coal tar pitches and 18 others obtained from ... -ranging c...

G. Bhatia; R. K. Aggarwal; O. P. Bahl

1987-11-01T23:59:59.000Z

356

THE PREDICTED COKE STRENGTH AFTER REACTION VALl JES OF BRITISH COLUMBIA COALS, WITH COMPARISONS TCOALS  

E-Print Network (OSTI)

This paper provides background to the coke strength after reaction (CSR) test and gives perspective regarding changes in the cokinp coal market. It provides it sumtnary of some of the predicted relationships hctween the ash chemistry of

D. Ryan; B. C. Geological; Survey Branch; John T. Price; Canada Centre For Mineral; Energy Technology

357

Kinetics of catalyst regeneration by coke combustion. II. Influence of temperature rise in the catalyst particles  

Science Journals Connector (OSTI)

A grain-pellet model has been used to study the effect of high reaction rates upon the temperature profiles developed during regeneration of coked catalyst particles. The possibility of falsification of kinetic.....

D. Lafarga; C. Royo; A. Monzón; M. Menéndez…

1991-08-01T23:59:59.000Z

358

Experimental Study on Co-gasification of Coal Liquefaction Residue and Petroleum Coke  

Science Journals Connector (OSTI)

An experimental study on co-gasification of coal liquefaction residue and petroleum coke in carbon dioxide was investigated by thermogravimetric analysis. The temperature of the experiment was 1173–1323 K, and the isothermal (1273 K) kinetics were ...

Xin Liu; Zhi-jie Zhou; Qi-jing Hu; Zheng-hua Dai; Fu-chen Wang

2011-06-20T23:59:59.000Z

359

Industrial experience with the thermal preparation of coal batch before coking  

Science Journals Connector (OSTI)

The basic industrial results obtained with thermal preparation of batch, followed by bed coking in horizontal furnaces, are briefly reviewed. Precarbon technology, which, in various forms, has been successfull...

Yu. S. Vasil’ev; A. I. Gordienko; G. V. Dolgarev

2008-07-01T23:59:59.000Z

360

Relationship between coking pressure generated by coal blends and the composition of their primary tars  

Science Journals Connector (OSTI)

Four coals that develop different pressures during the coking process were selected together with 10 blends (7 binary and 3 ternary) prepared with the same coals. Their semicoke contraction/expansion was measured by means of two tests (the Koppers-INCAR and the sole heated oven) and the variation in coking pressure during coking was determined in a movable wall oven. The coals and blends were then pyrolysed and the tars were analysed by gas chromatography (GC-FID–MS). The additivity law was applied to the properties used to evaluate the dangerousness of the blends and to the composition of the tar produced from the blends. Afterwards, the composition of the tar was studied in relation to contraction/expansion and the coking pressure generated by the coals and blends.

C. Barriocanal; M.A. Díez; R. Alvarez; M.D. Casal

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Pyrolysis kinetics of coking coal mixed with biomass under non-isothermal and isothermal conditions  

Science Journals Connector (OSTI)

Abstract To investigate the kinetic characteristics of coking coal mixed with biomass during pyrolysis, thermogravimetric (TG) and thermo-balance reactor (TBR) analyses were conducted under non-isothermal and isothermal condition. Yellow poplar as a biomass (B) was mixed with weak coking coal (WC) and hard coking coal (HC), respectively. The calculated activation energies of WC/B blends were higher than those of HC/B blends under non-isothermal and isothermal conditions. The coal/biomass blends show increased reactivity and decreased activation energy with increasing biomass blend ratio, regardless of the coking properties of the coal. The different char structures of the WC/B and HC/B blends were analyzed by BET and SEM.

Ha Myung Jeong; Myung Won Seo; Sang Mun Jeong; Byung Ki Na; Sang Jun Yoon; Jae Goo Lee; Woon Jae Lee

2014-01-01T23:59:59.000Z

362

Synthesis of super plasticizer NF-30 from coal coking by product washing oil and performance analysis  

Science Journals Connector (OSTI)

Super plasticizer was synthesized by using coal coking by product washing oil and industrial naphthalene....2 in exhaust (20%). Compared with NF, NF-30 have some advantages in lower cost, high water reducing rate...

Zifang Xu ???; Mingxu Zhang; Wenpei Hu

2013-10-01T23:59:59.000Z

363

Effect of Adsorption Contact Time on Coking Coal Particle Desorption Characteristics  

Science Journals Connector (OSTI)

Effect of Adsorption Contact Time on Coking Coal Particle Desorption Characteristics ... Esp. in the last decade a large amt. of data has been published characterizing coals from various coal basins world-wide for their gas sorption capacity. ...

Wei Zhao; Yuanping Cheng; Meng Yuan; Fenghua An

2014-03-20T23:59:59.000Z

364

High-Temperature Stress Relaxation Cracking and Stress Rupture Observed in a Coke Gasifier Failure  

Science Journals Connector (OSTI)

This article discusses the high-temperature metal degradation mechanisms that occurred in the failure of a nine-story tall coke gasifier, located in a refinery power plant. Cracking of gasifier internals, bulging...

Daniel J. Benac; Douglas B. Olson…

2011-06-01T23:59:59.000Z

365

Guide to ASTM test methods for the analysis of coal and coke  

SciTech Connect

The guide includes brief descriptions of all 56 ASTM test methods that cover the physical, chemical, and spectroscopic analytical techniques to qualitatively and quantitatively identify over 40 chemical and physical properties of coal, coke, their products, and by-products.

R.A. Kishore Nadkarni (ed.)

2008-07-01T23:59:59.000Z

366

The development of Coke Carried-Heat Gasification Coal-Fired Combined Cycle  

Science Journals Connector (OSTI)

Carried-Heat Partial Gasification Combined cycle is a novel combined cycle which was proposed by Thermal Engineering Department ... technology, Coke Carried-Heat Gasification Coal-Fired Combined Cycle, as the imp...

Li Zhao; Xiangdong Xu

1999-12-01T23:59:59.000Z

367

Hydrogen Generation and Coke Formation over a Diesel Oxidation Catalyst under Fuel Rich Conditions  

Science Journals Connector (OSTI)

Hydrogen Generation and Coke Formation over a Diesel Oxidation Catalyst under Fuel Rich Conditions† ... Hydrogen production via hydrocarbon steam reforming and water gas shift reactions was investigated over a monolith-supported Pt-based diesel oxidation catalyst. ...

Meshari AL-Harbi; Jin-Yong Luo; Robert Hayes; Martin Votsmeier; William S. Epling

2010-12-08T23:59:59.000Z

368

Current developments at Giprokoks for coke-battery construction and reconstruction  

SciTech Connect

Approaches developed at Giprokoks for coke-battery construction and reconstruction are considered. Recommendations regarding furnace construction and reconstruction are made on the basis of Ukrainian and world experience.

V.I. Rudyka; Y.E. Zingerman; V.B. Kamenyuka; O.N. Surenskii; G.E. Kos'kova; V.V. Derevich; V.A. Gushchin [Giprokoks, the State Institute for the Design of Coke-Industry Enterprises, Kharkov (Ukraine)

2009-07-15T23:59:59.000Z

369

Producing and controlling of the pollutant in the coal`s coking process  

SciTech Connect

In the process of heating and coke shaping, different pollutants and polluting factors will be produced and lost to the environment due to the different coking methods. The paper analyzes the production mechanism, type, emission, average quantity, and damage to the environment of the major pollutants and polluting factors produced in several kinds of coking processes in China at the present. Then, the paper concludes that an assessment for any coking method should include a comprehensive beneficial assessment of economical benefit, environmental benefit and social benefit. The items in the evaluation should consist of infrastructure investment, which includes production equipment and pollution control equipment, production cost, benefit and profit produced by one ton coal, whether the pollution complies with the environmental requirement, extent of the damage, influence to the social development, and etc.

Li, S. [Shanxi Environmental Protection Bureau (China); Fan, Z. [Shanxi Central Environmental Monitoring Station (China)

1997-12-31T23:59:59.000Z

370

Three-dimensional simulation of combustion processes in coke-battery furnace chambers  

Science Journals Connector (OSTI)

A three-dimensional model of the heating wall in a coke battery is developed by means of the Fluent CFD program. The results of simulation are in satisfactory agreement with experimental data. The mathematical...

M. V. Isaev; I. A. Sultanguzin

2010-08-01T23:59:59.000Z

371

Material Safety Data Sheet Revision Number: 001.2 Issue date: 02/03/2012  

E-Print Network (OSTI)

% Distillates (petroleum), hydrotreated heavy naphthenic 64742-52-5 10 - 30 Mineral oil light naphthenic OTHER Distillates (petroleum), hydrotreated heavy naphthenic 5 mg/m3 TWA mist 10 mg/m3 STEL mist 5 mg/m3

Rollins, Andrew M.

372

Experimental study on the effects of blast-cap configurations and charge patterns on coke descending in CDQ cooling shaft  

SciTech Connect

The coke descending behavior in a CDQ cooling shaft is studied experimentally by means of a tracing method with a digital camera. For three different blast-caps, the law of coke flow is studied under five conditions of coke charge. The experimental results show that, for the sake of the uniformity of the coke burden descending, a blast-cap with elliptical cross-section is a better choice than that with circular cross-section regardless of high or low placement. A coke charge pattern with a flat top burden surface is preferable to that with peak-valley surface, a double-peak superior to a one-peak. Trajectory and average velocity distribution of coke behavior depend weakly on whether the coke is continuously fed or not as the discharging began. The blast-caps have local effects on the descending coke and hardly affect whether the cokes flow smoothly or not in the case of coke burden with enough depth.

Y.H. Feng; X.X. Zhang; M.L. Wu [University of Science & Technology, Beijing (China). School of Mechanical Engineering

2008-08-15T23:59:59.000Z

373

Cryogenic fractionator gas as stripping gas of fines slurry in a coking and gasification process  

DOE Patents (OSTI)

In an integrated coking and gasification process wherein a stream of fluidized solids is passed from a fluidized bed coking zone to a second fluidized bed and wherein entrained solid fines are recovered by a scrubbing process and wherein the resulting solids-liquid slurry is stripped with a stripping gas to remove acidic gases, at least a portion of the stripping gas comprises a gas comprising hydrogen, nitrogen and methane separated from the coker products.

DeGeorge, Charles W. (Chester, NJ)

1981-01-01T23:59:59.000Z

374

Effect of thermal treatment on coke reactivity and catalytic iron mineralogy  

SciTech Connect

Iron minerals in coke can catalyze its gasification and may affect coke behavior in the blast furnace. The catalytic behavior of iron depends largely upon the nature of the iron-bearing minerals. To determine the mineralogical changes that iron could undergo in the blast furnace, cokes made from three coals containing iron present in different mineral forms (clays, carbonates, and pyrite) were examined. All coke samples were heat-treated in a horizontal furnace at 1373, 1573, and 1773 K and then gasified with CO{sub 2} at 1173 K in a fixed bed reactor (FBR). Coke mineralogy was characterized using quantitative X-ray diffraction (XRD) analysis of coke mineral matter prepared by low-temperature ashing (LTA) and field emission scanning electron microscopy combined with energy dispersive X-ray analysis (FESEM/EDS). The mineralogy of the three cokes was most notably distinguished by differing proportions of iron-bearing phases. During heat treatment and subsequent gasification, iron-containing minerals transformed to a range of minerals but predominantly iron-silicides and iron oxides, the relative amounts of which varied with heat treatment temperature and gasification conditions. The relationship between initial apparent reaction rate and the amount of catalytic iron minerals - pyrrhotite, metallic iron, and iron oxides - was linear and independent of heat treatment temperature at total catalyst levels below 1 wt %. The study showed that the coke reactivity decreased with increasing temperature of heat treatment due to decreased levels of catalytic iron minerals (largely due to formation of iron silicides) as well as increased ordering of the carbon structure. The study also showed that the importance of catalytic mineral matter in determining reactivity declines as gasification proceeds. 37 refs., 13 figs., 7 tabs.

Byong-chul Kim; Sushil Gupta; David French; Richard Sakurovs; Veena Sahajwalla [University of New South Wales, Sydney, NSW (Australia). Centre for Sustainable Materials Research and Technology

2009-07-15T23:59:59.000Z

375

Coke gasification: the influence and behavior of inherent catalytic mineral matter  

SciTech Connect

Gasification of coke contributes to its degradation in the blast furnace. In this study, the effect of gasification on the inherent catalytic minerals in cokes and their reciprocal influence on gasification are investigated. The catalytic mineral phases identified in the cokes used in this study were metallic iron, iron sulfides, and iron oxides. Metallic iron and pyrrhotite were rapidly oxidized during gasification to iron oxide. The catalysts had a strong influence on the apparent rates at the initial stages of reaction. As gasification proceeds, their effect on the reaction rate diminishes as a result of reducing the surface contact between catalyst and carbon matrix because of carbon consumption around the catalyst particles; with extended burnout the reactivity of the coke becomes increasingly dependent on surface area. The reaction rate in the initial stages was also influenced by the particle size of the catalytic minerals; for a given catalytic iron level, the cokes whose catalytic minerals were more finely dispersed had a higher apparent reaction rate than cokes containing larger catalytic particles. Iron, sodium, and potassium in the amorphous phase did not appear to affect the reaction rate. 40 refs., 16 figs., 6 tabs.

Mihaela Grigore; Richard Sakurovs; David French; Veena Sahajwalla [Commonwealth Scientific and Industrial Research Organisation (CSIRO), Bangor, NSW (Australia)

2009-04-15T23:59:59.000Z

376

Apparatus for distilling shale oil from oil shale  

SciTech Connect

An apparatus for distilling shale oil from oil shale comprises: a vertical type distilling furnace which is divided by two vertical partitions each provided with a plurality of vent apertures into an oil shale treating chamber and two gas chambers, said oil shale treating chamber being located between said two gas chambers in said vertical type distilling furnace, said vertical type distilling furnace being further divided by at least one horizontal partition into an oil shale distilling chamber in the lower part thereof and at least one oil shale preheating chamber in the upper part thereof, said oil shale distilling chamber and said oil shale preheating chamber communication with each other through a gap provided at an end of said horizontal partition, an oil shale supplied continuously from an oil shale supply port provided in said oil shale treating chamber at the top thereof into said oil shale treating chamber continuously moving from the oil shale preheating chamber to the oil shale distilling chamber, a high-temperature gas blown into an oil shale distilling chamber passing horizontally through said oil shale in said oil shale treating chamber, thereby said oil shale is preheated in said oil shale preheating chamber, and a gaseous shale oil is distilled from said preheated oil shale in said oil shale distilling chamber; and a separator for separating by liquefaction a gaseous shale oil from a gas containing the gaseous shale oil discharged from the oil shale preheating chamber.

Shishido, T.; Sato, Y.

1984-02-14T23:59:59.000Z

377

Material Safety Data Sheet 1. PRODUCT IDENTIFICATION  

E-Print Network (OSTI)

Weight% ACGIH; TLV-TWA OSHA PEL DISTILLATES (PETROLEUM), HYDROTREATED HEAVY NAPHTHENIC 64742-52-5 >50

Rollins, Andrew M.

378

Material Safety Data Sheet Revision Number: 003.2 Issue date: 11/17/2011  

E-Print Network (OSTI)

% Distillates (petroleum), hydrotreated heavy naphthenic 64742-52-5 30 - 60 Copper 7440-50-8 10 - 30 Graphite

Rollins, Andrew M.

379

Evaluation of fly ash from co-combustion of coal and petroleum coke for use in concrete  

SciTech Connect

An investigation of fly ash (FA) produced from various blends of coal and petroleum coke (pet coke) fired at Belledune Generating Station, New Brunswick, Canada, was conducted to establish its performance relative to FA derived from coal-only combustion and its compliance with CSA A3000. The FA samples were beneficiated by an electrostatic separation process to produce samples for testing with a range of loss-on-ignition (LOI) values. The results of these studies indicate that the combustion of pet coke results in very little inorganic residue (for example, typically less than 0.5% ash) and the main impact on FA resulting from the co-combustion of coal and up to 25% pet coke is an increase in the unburned carbon content and LOI values. The testing of FA after beneficiation indicates that FA produced from fuels with up to 25% pet coke performs as good as FA produced from the same coal without pet coke.

Scott, A.N.; Thomas, M.D.A.

2007-01-15T23:59:59.000Z

380

Low Distillate Stocks Set Stage for Price Volatility  

Gasoline and Diesel Fuel Update (EIA)

Along with the recent rise in crude oil prices, low stocks of Along with the recent rise in crude oil prices, low stocks of distillate fuels left markets in a vulnerable position. As we went into our two biggest distillate demand months, January and February, U.S. distillate stocks were very low -- particularly on the East and Gulf Coasts. The East Coast is the primary heating oil region, and it depends heavily on production from the Gulf Coast as well. Distillate stocks in the U.S. and Europe were in surplus supply as recently as October, but distillate stocks did not build as they usually do during the late fall, and declined more sharply than usual in December. December stocks closed well below the normal range. The unusual drawdown, in contrast to the more normal building pattern, resulted in distillate inventory levels about 3 million barrels lower than the very low

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to obtain the most current and comprehensive results.


381

Iterative Entanglement Distillation: Approaching full Elimination of Decoherence  

E-Print Network (OSTI)

The distribution and processing of quantum entanglement form the basis of quantum communication and quantum computing. The realization of the two is difficult because quantum information inherently has a high susceptibility to decoherence, i.e. to uncontrollable information loss to the environment. For entanglement distribution, a proposed solution to this problem is capable of fully eliminating decoherence; namely iterative entanglement distillation. This approach builds on a large number of distillation steps each of which extracts a number of weakly decohered entangled states from a larger number of strongly decohered states. Here, for the first time, we experimentally demonstrate iterative distillation of entanglement. Already distilled entangled states were further improved in a second distillation step and also made available for subsequent steps.Our experiment displays the realization of the building blocks required for an entanglement distillation scheme that can fully eliminate decoherence.

Boris Hage; Aiko Samblowski; James DiGuglielmo; Jaromír Fiurášek; Roman Schnabel

2010-07-09T23:59:59.000Z

382

Design and Operability of an Energy Integrated Distillation Column  

Science Journals Connector (OSTI)

Abstract Operability issues are investigated on an energy integrated distillation column. The distillation column separates a nearly binary mixture. The energy integration is achieved using an indirect heat pump between the column condenser and the reboiler. The design aim of the integrated is system to enable operation of the distillation column over its entire operating window, through manipulation of the heatpump variables. An additional aim is to provide the operator with a set of standard distillation column actuators, for controlling the distillation column as a conventional distillation column. This secondary aim is attempted achieved, through selection of the control structure of the heat pump. Both simulation and experimental results illustrate areas within the possible operating window where potential operability problems remain dependent upon the selected control configuration. A very large part of the totally possible operating window may be covered by using just one heat pump control structure. However multivariable control avoids singularity of the multiloop structure.

Torben Mønsted Schmidt; Arne Koggersbøl; Sten Bay Jörgensen

1992-01-01T23:59:59.000Z

383

Energy conservation in distillation: a technology applications manual  

SciTech Connect

Distillation is the most widely practiced technique for separating mixtures of chemical species, but it is an energy intensive process. A 10% reduction in distillation energy consumption would effect a significant savings. On a national basis this would be an annual savings of 200 trillion Btu, or the equivalent of 36.5 million barrels of oil per year. Technology to achieve these savings in distillation energy is available and measures are presented to assist process engineers in technical and economic analysis of the energy conservation measures most suitable for particular distillation applications. The manual catalogs all of the energy conservation options applicable to distillation and the options by the investment required; describes in detail the options having a significant potential to reduce distillation energy requirements economically; provides guidelines that will allow the plant engineer to quickly screen each option for his application; and provides short-cut calculation procedures for use in a preliminary economic analysis of promising options.

Not Available

1980-05-01T23:59:59.000Z

384

Distillation by repeated measurements: Continuous spectrum case  

SciTech Connect

Repeated measurements on one part of a bipartite system strongly affect the other part that is not measured, the dynamics of which is regulated by an effective contracted evolution operator. When the spectrum of this operator is discrete, the nonmeasured system is driven into a pure state, irrespective of the initial state, provided that the spectrum satisfies certain conditions. We show here that, even in the case of continuous spectrum, an effective distillation can occur under rather general conditions. We confirm it by applying our formalism to a simple model.

Bellomo, Bruno; Compagno, Giuseppe [CNISM and Dipartimento di Scienze Fisiche ed Astronomiche, Universita di Palermo, via Archirafi 36, IT-90123 Palermo (Italy); Nakazato, Hiromichi [Department of Physics, Waseda University, Tokyo 169-8555 (Japan); Yuasa, Kazuya [Waseda Institute for Advanced Study, Waseda University, Tokyo 169-8050 (Japan)

2010-12-15T23:59:59.000Z

385

W-like bound entangled states and secure key distillation  

E-Print Network (OSTI)

We construct multipartite entangled states with underlying W-type structure satisfying positive partial transpose (PPT) condition under any (N-1)|1 partition. Then we show how to distill N-partite secure key form the states using two different methods: direct application of local filtering and novel random key distillation scheme in which we adopt the idea form recent results on entanglement distillation. Open problems and possible implications are also discussed.

Remigiusz Augusiak; Pawel Horodecki

2008-11-21T23:59:59.000Z

386

"Table A2. Total Consumption of LPG, Distillate Fuel Oil,...  

U.S. Energy Information Administration (EIA) Indexed Site

. Total Consumption of LPG, Distillate Fuel Oil, and Residual Fuel" " Oil for Selected Purposes by Census Region, Industry Group, and Selected" " Industries, 1991" " (Estimates in...

387

Application of Solar Distillation Systems with Phase Change Material Storage  

Science Journals Connector (OSTI)

This chapter presents the analysis of a solar distillation system with phase change material storage system. There is always a scarcity of...

S. K. Shukla

2014-01-01T23:59:59.000Z

388

Optimisation of complex distillation column systems using rigorous models.  

E-Print Network (OSTI)

??Includes abstract. Since distillation is still the most widely used separation technique in the petrochemical industry, optimisation of these unit operations are important to minimise… (more)

Hughes, Michael John.

2010-01-01T23:59:59.000Z

389

Catalytic distillation for the synthesis of tertiary butyl alcohol.  

E-Print Network (OSTI)

??Catalytic Distillation for the synthesis of tertiary butyl alcohol (TBA) is investigated in this thesis. The solvent, ethylene glycol, is proposed as a means of… (more)

Safinski, Tomasz

2005-01-01T23:59:59.000Z

390

Local Gaussian operations can enhance continuous-variable entanglement distillation  

E-Print Network (OSTI)

Entanglement distillation is a fundamental building block in long-distance quantum communication. Though known to be useless on their own for distilling Gaussian entangled states, local Gaussian operations may still help to improve non-Gaussian entanglement distillation schemes. Here we show that by applying local squeezing operations, both the performance and the efficiency of existing distillation protocols can be enhanced. We derive the optimal enhancement through local Gaussian unitaries, which can be obtained even in the most natural scenario when Gaussian mixed entangled states are shared after their distribution through a lossy-fiber communication channel.

ShengLi Zhang; Peter van Loock

2011-03-23T23:59:59.000Z

391

Development of an energy efficient direct contact membrane distillation system.  

E-Print Network (OSTI)

??Direct contact membrane distillation (DCMD) was investigated for its performance abilities and capability to concentrate aqueous solutions with high solid contents at low temperatures. The… (more)

Bui, Anh

2008-01-01T23:59:59.000Z

392

Local Gaussian operations can enhance continuous-variable entanglement distillation  

SciTech Connect

Entanglement distillation is a fundamental building block in long-distance quantum communication. Though known to be useless on their own for distilling Gaussian entangled states, local Gaussian operations may still help to improve non-Gaussian entanglement distillation schemes. Here we show that by applying local squeezing operations both the performance and the efficiency of existing distillation protocols can be enhanced. We find that such an enhancement through local Gaussian unitaries can be obtained even when the initially shared Gaussian entangled states are mixed, as, for instance, after their distribution through a lossy-fiber communication channel.

Zhang Shengli; Loock, Peter van [Optical Quantum Information Theory Group, Max Planck Institute for the Science of Light, Guenther-Scharowsky-Strasse 1/Bau 26, DE-91058 Erlangen (Germany); Institute of Theoretical Physics I, Universitaet Erlangen-Nuernberg, Staudtstrasse 7/B2, DE-91058 Erlangen (Germany)

2011-12-15T23:59:59.000Z

393

Characterization of tuyere-level core-drill coke samples from blast furnace operation  

SciTech Connect

A suite of tuyere-level coke samples have been withdrawn from a working blast furnace during coal injection, using the core-drilling technique. The samples have been characterized by size exclusion chromatography (SEC), Fourier transform Raman spectroscopy (FT-RS), and X-ray powder diffraction (XRD) spectroscopy. The 1-methyl-2-pyrrolidinone (NMP) extracts of the cokes sampled from the 'bosh', the rear of the 'bird's nest', and the 'dead man' zones were found by SEC to contain heavy soot-like materials (ca. 10{sup 7}-10{sup 8} apparent mass units). In contrast, NMP extracts of cokes taken from the raceway and the front of the 'bird's nest' only contained a small amount of material of relatively lower apparent molecular mass (up to ca. 10{sup 5} u). Since the feed coke contained no materials extractable by the present method, the soot-like materials are thought to have formed during the reactions of volatile matter released from the injectant coal, probably via dehydrogenation and repolymerization of the tars. The Raman spectra of the NMP-extracted core-drilled coke samples showed variations reflecting their temperature histories. Area ratios of D-band to G-band decreased as the exposure temperature increased, while intensity ratios of D to G band and those of 2D to G bands increased with temperature. The graphitic (G), defect (D), and random (R) fractions of the carbon structure of the cokes were also derived from the Raman spectra. The R fractions decreased with increasing temperature, whereas G fractions increased, while the D fractions showed a more complex variation with temperature. These data appear to give clues regarding the graphitization mechanism of tuyere-level cokes in the blast furnace. 41 refs., 9 figs., 6 tabs.

S. Dong; N. Paterson; S.G. Kazarian; D.R. Dugwell; R. Kandiyoti [Imperial College London, London (United Kingdom). Department of Chemical Engineering

2007-12-15T23:59:59.000Z

394

Predicting the yield of coking byproducts on the basis of elementary and petrographic analysis of the coal batch  

Science Journals Connector (OSTI)

Mathematical models are developed for predicting the yield of coking byproducts on the basis of elementary and petrographic analysis of the coal batch.

M. B. Golovko; I. D. Drozdnik; D. V. Miroshnichenko; Yu. S. Kaftan

2012-06-01T23:59:59.000Z

395

Study of the sulphur in coal and its distribution between the gases and the residue in coking.  

E-Print Network (OSTI)

??Sulphur exists in metallurgical coke as a source of annoyance and difficulties in the economic progress of the metal industries. It ie present in coal… (more)

Wenger, Arthur W.

1923-01-01T23:59:59.000Z

396

Simulation and Optimization of Distillation Processes for Separating the Methanol–Chlorobenzene Mixture with Separate Heat-Pump Distillation  

Science Journals Connector (OSTI)

For a special distillation column with a large temperature difference between the bottom and top, the direct heating of the bottom by compressing the top stream would cause excessive energy consumption by the compressor, which would result in an increase in the overall energy consumption and operating costs; therefore, this method would not meet the energy-saving principle of heat-pump distillation. ... Rivera-Ortega, P.; Picón-Núñez, M.; Torres-Reyes, E.; Gallegos-Muñoz, A.Thermal Integration of Heat Pumping Systems in Distillation Columns Appl. ... Fonyo, Z.; Mizsey, P.Economic Application of Heat Pumps in Integrated Distillation Systems Heat Recovery Syst CHP 1994, 14, 249– 263 ...

Xiaoxin Gao; Zhengfei Ma; Limin Yang; Jiangquan Ma

2013-07-30T23:59:59.000Z

397

Australia–Japan coking coal trade: A hedonic analysis under benchmark and fair treatment pricing  

Science Journals Connector (OSTI)

Given Japan's dominant position in the Asia–Pacific regional coal market and the continuing relatively low profitability of Australia's coal industry, the influence of the Japanese steel mills on coal pricing arrangements between Australia and Japan remains an issue in Australia. In Japanese fiscal year (JFY) 1996, the Japanese steel mills replaced benchmark pricing with the “fair treatment” pricing system whereby coal contract information is kept confidential. In this paper, Quandt's switching regime model is used to test for structural change in hedonic pricing relationships in the important Australia–Japan coking coal trade between JFY 1992 and 1997. There is statistical evidence of significant structural change in JFY 1996 for hard coking coal and in JFY 1995 for semisoft coking coal (when soft coking coal was merged with the semisoft category). The goodness of fit of the regressions is lower in each recent period. It is concluded that price discovery in the annual coal negotiations, particularly for hard coking coal, is relatively more difficult under fair treatment pricing.

Anthony Swan; Sally Thorpe; Lindsay Hogan

1999-01-01T23:59:59.000Z

398

Surface Depletion in the Vacuum Distillation of Metals from Bismuth  

SciTech Connect

Surface depletion was investigated in laboratory- and plant-scale distillation units with mixing by natural convection or by mechanical surface agitation. A model was developed for predicting the degree of surface depletion during the distillation of metals from bismuth as a function of temperature, still pot dimensions, and degree of agitation. This paper discusses those findings.

Bradley, R.F.

2001-08-29T23:59:59.000Z

399

Distillation purification and radon assay of liquid xenon  

SciTech Connect

We succeeded to reduce the Kr contamination in liquid xenon by a factor of 1/1000 with a distillation system in Kamioka mine. Then, the remaining radioactivities (Radon and Kr) in purified liquid xenon were measured with the XMASS prototype detector. In this talk, the distillation system and the remaining internal radioactivity levels are reported.

Takeuchi, Yasuo [Kamioka Observatory, ICRR, Univ. of Tokyo, Kamioka-cho, Hida-shi, Gifu 506-1205 (Japan)

2005-09-08T23:59:59.000Z

400

Analysis of Closed Multivessel Batch Distillation of Ternary Azeotropic Mixtures  

E-Print Network (OSTI)

Analysis of Closed Multivessel Batch Distillation of Ternary Azeotropic Mixtures using Elementary ­ Introducing the concept of elementary topological cells, we illustrate how vapor­liquid equilibrium (VLE with total reflux packed distillation column profiles when all resistance to mass transfer is in the vapor

Skogestad, Sigurd

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

A Decision Mechanism for the Selective Combination of Evidence in Topic Distillation  

E-Print Network (OSTI)

A Decision Mechanism for the Selective Combination of Evidence in Topic Distillation Vassilis combination of evidence for Web Information Retrieval and particularly for topic distillation. We introduce. Keywords Web information retrieval, Topic distillation, decision mechanism, selective combination

Jose, Joemon M.

402

Kinetic azeotropy and design of reactive distillation columns  

SciTech Connect

The reactive fixed points in the distillation maps of a reactive distillation column (RDC) with kinetically controlled reactions are identified and their role in deciding the design feasibility has been elucidated. The fixed points at which both reaction and distillation vectors have zero magnitudes correspond to the equilibrium fixed point. It is known that the relative positions of these points for the rectifying and stripping sections determine the value of the minimum reflux ratio. However, apart from these fixed points, there are certain fixed points in the distillation map at which, though the reaction and distillation vectors have nonzero magnitudes, they nullify the effects of each other. These points correspond to the kinetic fixed points and have a special significance. Their positions have direct influence on the feasible product composition. A simple example of an ideal ternary system undergoing a reaction 2B {longleftrightarrow} A + c has been illustrated to show the importance of kinetic azeotropy in the design aspects of RDC.

Mahajani, S.M. [Monash Univ., Clayton, Victoria (Australia). Dept. of Chemical Engineering] [Monash Univ., Clayton, Victoria (Australia). Dept. of Chemical Engineering

1999-01-01T23:59:59.000Z

403

Relationship between coking coal quality and its micro-Raman spectral characteristics  

Science Journals Connector (OSTI)

Abstract Micro-Raman spectroscopy examination of 20 samples of coking coals (Rr = 0.84–1.43%) was performed. Spectral parameters were correlated with the basic rank and technological properties of coals. The G band FWHM and the AG/AALL ratio decrease with the volatile matter content (Vdaf) decrease and the all maceral reflectance scan (Rscan) value increase. The correlations between these parameters are stronger than those, between the G band FWHM and the AG/AALL ratio, and the mean random vitrinite reflectance (Rr). Coking properties are weakly related to the Raman spectral characteristics of coal. Based on the Raman parameters G band FWHM and the AG/AALL ratio, it may be possible to evaluate the volatile matter content (Vdaf) and the all maceral reflectance scan (Rscan) value for coking coals.

Rafa? Morga; Iwona Jelonek; Krystyna Kruszewska

2014-01-01T23:59:59.000Z

404

Coking phenomena in the pyrolysis of ethylene dichloride into vinyl chloride  

SciTech Connect

Pyrolysis of ethylene dichloride (EDC) into vinyl chloride (VCM) which is the monomer for polyvinyl chloride, one of the most popular polymers, has been established commercially for quite a time. The process around 500{degrees}C has been proved to give VCM of high purity at very high selectivity about 99% and a reasonable conversion about 50%. However, the coking is a major problem in the long run, requiring decoking treatment every two months. The present paper describes features of carbons produced in the pyrolysis process. Coke of respective features was found in the reactor, the transfer line, the heat exchanger and the rapid quencher. Typical pyrolytic carbon, anisotropic coke produced in the liquid phase, isotropic carbon was produced on the reactor wall as low as 500{degrees}C. The mechanisms for their formation are discussed.

Sotowa, Chiaki; Korai, Yozo; Mochida, Isao [Kyushu Univ., Kasuga, Fukuoka (Japan)] [and others

1995-12-31T23:59:59.000Z

405

Catalyst deactivation by coking in the MTG process in fixed and fluidized bed reactors  

Science Journals Connector (OSTI)

The validity of a kinetic model for describing the deactivation of a catalyst based on a HZSM5 zeolite has been studied by carrying out reaction in fixed and fluidized bed reactors. The kinetic model takes into account that activity is dependent on the concentration of the lumps of oxygenates, of light olefins and of the remaining products and shows that coke formation capability follows this order. The difference between the deactivation kinetic constants calculated for the fixed and fluidized bed reactors is explained by the effect of the steam produced in the reaction, where coke stripping attenuates deactivation. Future improvements in the deactivation kinetic model must take into account coke stripping by the steam produced in the reaction.

Andrés T. Aguayo; Ana G. Gayubo; JoséM. Ortega; Martin Olazar; Javier Bilbao

1997-01-01T23:59:59.000Z

406

Pyrolysis of shale oil vacuum distillate fractions  

SciTech Connect

The freezing point of US Navy jet fuel (JP-5) has been related to the amounts of large n-alkanes present in the fuel. This behavior applies to jet fuels derived from alternate fossil fuel resources, such as shale oil, coal, and tar sands, as well as those derived from petroleum. In general, jet fuels from shale oil have the highest and those from coal the lowest n-alkane content. The origin of these n-alkanes in the amounts observed, especially in shale-derived fuels, is not readily explained on the basis of literature information. Studies of the processes, particularly the ones involving thermal stress, used to produce these fuels are needed to define how the n-alkanes form from larger molecules. The information developed will significantly contribute to the selection of processes and refining techniques for future fuel production from shale oil. Carbon-13 nmr studies indicate that oil shale rock contains many long unbranched straight chain hydrocarbon groups. The shale oil derived from the rock also gives indication of considerable straight chain material with large peaks at 14, 23, 30, and 32 ppM in the C-13 nmr spectrum. Previous pyrolysis studies stressed fractions of shale crude oil residua, measured the yields of JP-5, and determined the content of potential n-alkanes in the JP-5 distillation range (4). In this work, a shale crude oil vacuum distillate (Paraho) was separated into three chemical fractions. The fractions were then subjected to nmr analysis to estimate the potential for n-alkane production and to pyrolysis studies to determine an experimental n-alkane yield.

Hazlett, R.N.; Beal, E.

1983-01-01T23:59:59.000Z

407

Pyrolysis of shale oil vacuum distillate fractions  

SciTech Connect

The freezing point of U.S. Navy jet fuel (JP-5) has been related to the amounts of large nalkanes present in the fuel. This behavior applies to jet fuels derived from alternate fossil fuel resources, such as shale oil, coal, and tar sands, as well as those derived from petroleum. In general, jet fuels from shale oil have the highest and those from coal the lowest n-alkane content. The origin of these n-alkanes in the amounts observed, especially in shale-derived fuels, is not readily explained on the basis of literature information. Studies of the processes, particularly the ones involving thermal stress, used to produce these fuels are needed to define how th n-alkanes form from larger molecules. The information developed will significantly contribute to the selection of processes and refining techniques for future fuel production from shale oil. Carbon-13 nmr studies indicate that oil shale rock contains many long unbranched straight chain hydrocarbon groups. The shale oil derived from the rock also gives indication of considerable straight chain material with large peaks at 14, 23, 30 and 32 ppm in the C-13 nmr spectrum. Previous pyrolysis studies stressed fractions of shale crude oil residua, measured the yields of JP-5, and determined the content of potential n-alkanes in the JP-5 distillation range (4). In this work, a shale crude oil vacuum distillate (Paraho) was separated into three chemical fractions. The fractions were then subjected to nmr analysis to estimate the potential for n-alkane production and to pyrolysis studies to determine an experimental n-alkane yield.

Hazlett, R.N.; Beal, E.

1983-02-01T23:59:59.000Z

408

Study on the Respirable Particulate Matter Generated from the Petroleum Coke and Coal Mixed-Fired CFB Boiler  

Science Journals Connector (OSTI)

The dust generated from the fuel combustion is one of the important sources for air pollution. This paper has made a comprehensive research on the particulate matter generated from the petroleum coke and coal mixed-fired circulating fluidized bed (CFB) ... Keywords: petroleum coke, respirable particulate matter, air pollution, circulating fluidized bed boiler

Yan Ma; Hao Bai; Lihua Zhao; Yang Ma; Daqiang Cang

2010-12-01T23:59:59.000Z

409

An active carbon catalyst prevents coke formation from asphaltenes during the hydrocracking of vacuum residue  

SciTech Connect

Active carbons were prepared by the steam activation of a brown coal char. The active carbon with mesopores showed greater adsorption selectivity for asphaltenes. The active carbon was effective at suppressing coke formation, even with the high hydrocracking conversion of vacuum residue. The analysis of the change in the composition of saturates, aromatics, resins, and asphaltenes in the cracked residue with conversion demonstrated the ability of active carbon to restrict the transformation of asphaltenes to coke. The active carbon that was richer in mesopores was presumably more effective at providing adsorption sites for the hydrocarbon free-radicals generated initially during thermal cracking to prevent them from coupling and polycondensing.

Fukuyama, H.; Terai, S. [Toyo Engineering Corp., Chiba (Japan). Technological Research Center

2007-07-01T23:59:59.000Z

410

Contribution to kinetic modeling of catalyst deactivation by coke in the MTG process  

SciTech Connect

The adequacy of a kinetic model for deactivation of a catalyst based on a H-ZSM5 used in the transformation of methanol into hydrocarbons has been proven. The model takes into account the pronounced effect on coke deposition of the concentration of reaction lumps and coke preferable deposition at the reactor inlet by degradation of oxygenates (methanol and dimethylether) on the catalyst acid sites. The kinetic model is in agreement with the experimental results of fixed and fluidized bed reactors within the 300-400 {degrees}C range. The deactivation is slightly smaller in fluidized bed but contribution of catalyst attrition to deactivation must be considered. 14 refs., 3 figs.

Gayubo, A.G.; Ortega, J.M.; Benito, P.L.; Aguayo, A.T.; Bilbao, J. [Universidad del Pais Vasco, Bilbao (Spain)

1996-12-31T23:59:59.000Z

411

E-Print Network 3.0 - azeotropic distillation columns Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

closed (total reflux) operation of the conventional batch distillation column with a condenser... in closed middle vessel batch distillation column (solid ... Source: Skogestad,...

412

Mechanism of physical transformations of mineral matter in the blast furnace coke with reference to its reactivity and strength  

SciTech Connect

Examinations of polished and dry cut sections of feed and tuyere coke revealed some possible mechanisms for the physical influence of mineral compounds on the reactivity and strength of coke. It was observed that rounded particles of mineral phases that are exposed to the pore walls and surface of coke at high temperature create an inorganic cover, thus reducing the surface available for gas-solid reactions. The particles of mineral matter that have a low melting point and viscosity can affect the coke at earlier stages in the blast furnace process, acting in the upper parts of the blast furnace (BF). The temperature-driven redistribution of mineral phases within the coke matrix probably leads to the creation of weak spots and in general to anisotropy in its properties, thus reducing its strength. 9 refs., 2 figs., 1 tab.

Stanislav S. Gornostayev; Jouko J. Haerkki [University of Oulu, Oulu (Finland). Laboratory of Process Metallurgy

2006-12-15T23:59:59.000Z

413

Rates of Microbial Transformation of Polycyclic Aromatic Hydrocarbons in Water and Sediments in the Vicinity of a Coal-Coking Wastewater Discharge  

Science Journals Connector (OSTI)

...Sediments in the Vicinity of a Coal-Coking Wastewater Discharge Stephen E...collected in the vicinity of a coal-coking treated wastewater discharge from...sediments in the vicinity of a coal-coking wastewater discharge. | To facilitate...

Stephen E. Herbes

1981-01-01T23:59:59.000Z

414

This Week In Petroleum Printer-Friendly Version  

Annual Energy Outlook 2012 (EIA)

year of 2008, there were slight increases in capacity for most downstream units. Hydrotreating capacity continues to grow as the demand for low sulfur product expands. Coking...

415

Multilevel distillation of magic states for quantum computing  

E-Print Network (OSTI)

We develop a procedure for distilling magic states used in universal quantum computing that requires substantially fewer initial resources than prior schemes. Our distillation circuit is based on a family of concatenated quantum codes that possess a transversal Hadamard operation, enabling each of these codes to distill the eigenstate of the Hadamard operator. A crucial result of this design is that low-fidelity magic states can be consumed to purify other high-fidelity magic states to even higher fidelity, which we call "multilevel distillation." When distilling in the asymptotic regime of infidelity $\\epsilon \\rightarrow 0$ for each input magic state, the number of input magic states consumed on average to yield an output state with infidelity $O(\\epsilon^{2^r})$ approaches $2^r+1$, which comes close to saturating the conjectured bound in [Phys. Rev. A 86, 052329]. We show numerically that there exist multilevel protocols such that the average number of magic states consumed to distill from error rate $\\epsilon_{\\mathrm{in}} = 0.01$ to $\\epsilon_{\\mathrm{out}}$ in the range $10^{-5}$ to $10^{-40}$ is about $14\\log_{10}(1/\\epsilon_{\\mathrm{out}}) - 40$; the efficiency of multilevel distillation dominates all other reported protocols when distilling Hadamard magic states from initial infidelity 0.01 to any final infidelity below $10^{-7}$. These methods are an important advance for magic-state distillation circuits in high-performance quantum computing, and they provide insight into the limitations of nearly resource-optimal quantum error correction.

Cody Jones

2012-10-11T23:59:59.000Z

416

Improved direct and indirect systems of columns for ternary distillation  

SciTech Connect

Separation of a ternary mixture into almost pure components is discussed. Systems of distillation columns, with higher thermodynamic efficiency, are developed from a direct sequence (or indirect sequence) of distillation columns by allowing for two interconnecting streams of the same composition and different enthalpy. This increases the reversibility of distillation in the second column, which results in replacing a portion of the high-temperature boiling duty with a lower-temperature heat in the direct split case. For the indirect split case, the improvement allows a portion of the low-temperature condensing duty to be replaced with a higher-temperature condensation.

Agrawal, R.; Fidkowski, Z.T. [Air Products and Chemicals, Inc., Allentown, PA (United States)] [Air Products and Chemicals, Inc., Allentown, PA (United States)

1998-04-01T23:59:59.000Z

417

Novel adsorption distillation hybrid scheme for propane/propylene separation  

SciTech Connect

A novel adsorption-distillation hybrid scheme is proposed for propane/propylene separation. The suggested scheme has potential for saving up to [approximately]50% energy and [approximately]15-30% in capital costs as compared with current technology. The key concept of the proposed scheme is to separate olefins from alkanes by adsorption and then separate individual olefins and alkanes by simple distillation, thereby eliminating energy intensive and expensive olefin-alkane distillation. A conceptual flow schematic for the proposed hybrid scheme and potential savings are outlined.s

Kumar, R.; Golden, T.C.; White, T.R.; Rokicki, A. (Air Products an Chemicals, Inc., Allentown, PA (United States))

1992-12-01T23:59:59.000Z

418

The Cylinder: Kinematics of the Nineteenth Century  

E-Print Network (OSTI)

distillation. The coking of coal as well as the productionin coal mines, in steel and paper mills, in coking plants,

Müller-Sievers, Helmut

2012-01-01T23:59:59.000Z

419

Dissolution of refractories for gasification process of petroleum coke for the steel industry  

Science Journals Connector (OSTI)

The production of energizing gases such as H2 and CO by gasification process of solid fuels is a technology that has increased in recent years since it is an efficient and clean process. To enable the production of gases, it is necessary to use refractory materials capable of withstanding high temperatures, thermal shock and contact with aggressive media. Nowadays, there is not published literature on refractory materials used for furnaces lining for petroleum coke gasification at high temperatures (?1900 °C). Therefore, this paper deals with the study of alumina and magnesium aluminate/alumina-based refractories as candidates for the furnace lining used in the petroleum coke gasification for steel production. Refractory samples were made with some designed formulations which were subjected to chemical interactions with pellets made of petroleum coke and petroleum coke ash at 1650 °C for 4 h. After completing the tests, the formulations were cut transversely and were characterized by SEM-EDS and XRD to evaluate the resistance to slag penetration and formation of low melting point phases. The results show that slag penetration and corrosion in the refractory formulations occur due to the formation of hibonite, spinels (Ni2+, Fe2+, Mg2+)(Al, Fe)2O4 and gehlenite phases. However, these phases together stop the molten slag penetration.

R. Puente-Ornelas; C.J. Lizcano-Zulaica; A.M. Guzmán; P.C. Zambrano; T.K. Das-Roy

2012-01-01T23:59:59.000Z

420

Effect of Iron Species and Calcium Hydroxide on High-Sulfur Petroleum Coke CO2 Gasification  

Science Journals Connector (OSTI)

The effect of iron species on petroleum coke CO2 gasification was studied in the present work. The effects of the temperature (1173–1673 K), the catalyst types, catalyst loading (ranging from 0 to 5 wt %), and composition during the gasification of ...

Zhi-jie Zhou; Qi-jing Hu; Xin Liu; Guang-suo Yu; Fu-chen Wang

2012-01-24T23:59:59.000Z

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

The behaviors and fate of polycyclic aromatic hydrocarbons (PAHs) in a coking wastewater treatment plant  

Science Journals Connector (OSTI)

The occurrence, behaviors and fate of 18 \\{PAHs\\} were investigated in a coking wastewater treatment plant in Songshan coking plant, located in Shaoguan, Guangdong Province of China. It was found that the target compounds occurred widely in raw coking wastewater, treated effluent, sludge and gas samples. In raw coking wastewater, high molecular weight (MW) \\{PAHs\\} were the dominant compounds, while 3–6 ring \\{PAHs\\} predominated in the final effluent. The dominant compounds in gas samples were phenathrene, fluoranthene and pyrene, while they were fluoranthene, pyrene, chrysene and benzo[k]fluoranthene for sludge. The process achieved over 97% removal for all the PAHs, 47–92% of eliminations of these target compounds in liquid phase were achieved in biological stage. Different behaviors of \\{PAHs\\} were observed in the primary tank, anaerobic tank, aerobic tank, hydrolytic tank and coagulation tank units, while heavier and lower ones were mainly removed in anaerobic tank and aerobic tanks, respectively. Regarding the fate of PAHs, calculated fractions of mass losses for low MW \\{PAHs\\} due to transformation and adsorption to sludge accounted for 15–50% and 24–49%, respectively, while the rest was less than 1%. For high MW PAHs, the mass losses were mainly due to adsorption to sludge and separation with tar (contributing 56–76% and 22–39%, respectively), and the removal through transformation was less.

Wanhui Zhang; Chaohai Wei; Xinsheng Chai; Jingying He; Ying Cai; Man Ren; Bo Yan; Pingan Peng; Jiamo Fu

2012-01-01T23:59:59.000Z

422

Coke deposits formation and products selectivities for the MTG process in a fluidized bed reactor  

Science Journals Connector (OSTI)

Experiments were carried out in a demonstrative scale fluidized bed reactor for methanol conversion to gasoline (MTG). We investigated the kinetics of the coke deposits formation and their influence on the products selectivities. New reaction indexes were advanced for on line monitoring of the catalyst activity.

Grigore Pop; Gavril Musca; Eleonora Chirila; Rodica Boeru; Gheorghe Niculae; Natalia Natu; Gheorghe Ignatescu; Sorin Straja

1989-01-01T23:59:59.000Z

423

Investigation of Vanadium Compounds in Ashes from a CFBC Firing 100 Petroleum Coke  

Science Journals Connector (OSTI)

Investigation of Vanadium Compounds in Ashes from a CFBC Firing 100 Petroleum Coke ... The ash pits have since gone through an extensive remedial process. ... The other metals investigated (i.e., Fe, Cu, Zn, and Pb) also were present predominantly as sulfates. ...

L. Jia; E. J. Anthony; J. P. Charland

2002-02-27T23:59:59.000Z

424

Coal flow aids reduce coke plant operating costs and improve production rates  

SciTech Connect

Chemical coal flow aids can provide many benefits to coke plants, including improved production rates, reduced maintenance and lower cleaning costs. This article discusses the mechanisms by which coal flow aids function and analyzes several successful case histories. 2 refs., 10 figs., 1 tab.

Bedard, R.A.; Bradacs, D.J.; Kluck, R.W.; Roe, D.C.; Ventresca, B.P.

2005-06-01T23:59:59.000Z

425

Spot Distillate & Crude Oil Prices  

Gasoline and Diesel Fuel Update (EIA)

mid-January, 2000. WTI crude oil price rose about $17 per mid-January, 2000. WTI crude oil price rose about $17 per barrel or 40 cents per gallon from its low point in mid February 1999 to January 17, 2000. Over this same time period, New York Harbor spot heating oil had risen about 42 cents per gallon, reflecting both the crude price rise and the beginning of a return to a more usual seasonal spread over the price of crude oil. The week ending January 21, distillate spot prices in the Northeast spiked dramatically to record levels, closing on Friday at $1.26 per gallon -- up 50 cents from the prior week. Gulf Coast prices were not spiking, but were probably pulled higher as the New York Harbor market began to draw on product from other areas. They closed at 83 cents per gallon, an increase of 11 cents from the prior Friday. Crude oil had risen about 4 cents from

426

Distillate Supply/Demand Balance Reflected in Spreads  

Gasoline and Diesel Fuel Update (EIA)

4 4 Notes: The price spike that initiated the flood of distillate imports last winter can be easily seen in this chart. The distillate supply/demand balance influences the spread between spot distillate and spot crude oil prices. For example, when stocks are higher than normal, the spread will be lower than usual. This spread is the price incentive that encourages or discourages changes in supply. The January/February 2000 price spike was shorter than the one last winter, largely due to the timing. Since last winter's price spike occurred early in the season, it took some time before prices receded substantially. Currently, the distillate fuel refining spread (the difference between the spot heating oil price and the WTI price) is more "typical". But as was

427

Magic-state distillation with the four-qubit code  

E-Print Network (OSTI)

The distillation of magic states is an often-cited technique for enabling universal quantum computing once the error probability for a special subset of gates has been made negligible by other means. We present a routine for magic-state distillation that reduces the required overhead for a range of parameters of practical interest. Each iteration of the routine uses a four-qubit error-detecting code to distill the +1 eigenstate of the Hadamard gate at a cost of ten input states per two improved output states. Use of this routine in combination with the 15-to-1 distillation routine described by Bravyi and Kitaev allows for further improvements in overhead.

Meier, Adam M; Knill, Emanuel

2012-01-01T23:59:59.000Z

428

Entanglement distillation by means of k-extendible maps  

E-Print Network (OSTI)

It is known that from entangled states which have positve partial transpose it is not possible to distill maximally entangled state by local operations and classical communication (LOCC). A long-standing problem is whether all states with non-positive partial transpose can be distilled. In this paper we attack this question using a larger class of operations than LOCC operations. Namely, we consider k-extendible operations - those, whose Choi-Jamiolkowski state is k-extendible. We obtain, in particular, that this class is unexpectedly powerful - e.g. capable of distilling even completely product states. We also perform numerical studies of distillation of Werner states by those maps, which imply, that if we raise the extension index k in parallel with raising the numebr of copies, they are not that powerful anymore.

Pankowski, L; Horodecki, M; Smith, G

2011-01-01T23:59:59.000Z

429

Kinetic Method for Hydrogen-Deuterium-Tritium Mixture Distillation Simulation  

SciTech Connect

Simulation of hydrogen distillation plants requires mathematical procedures suitable for multicomponent systems. In most of the present-day simulation methods a distillation column is assumed to be composed of theoretical stages, or plates. However, in the case of a multicomponent mixture theoretical plate does not exist.An alternative kinetic method of simulation is depicted in the work. According to this method a system of mass-transfer differential equations is solved numerically. Mass-transfer coefficients are estimated with using experimental results and empirical equations.Developed method allows calculating the steady state of a distillation column as well as its any non-steady state when initial conditions are given. The results for steady states are compared with ones obtained via Thiele-Geddes theoretical stage technique and the necessity of using kinetic method is demonstrated. Examples of a column startup period and periodic distillation simulations are shown as well.

Sazonov, A.B.; Kagramanov, Z.G.; Magomedbekov, E.P. [Mendeleyev University of Chemical Technology of Russia (Russian Federation)

2005-07-15T23:59:59.000Z

430

Irreversibility of entanglement distillation for a class of symmetric states  

SciTech Connect

We investigate the irreversibility of entanglement distillation for a symmetric (d+1)-parameter family of mixed bipartite quantum states acting on Hilbert spaces of arbitrary dimension dxd. We prove that in this family the entanglement cost is generically strictly larger than the distillable entanglement, so that the set of states for which the distillation process is asymptotically reversible is of measure zero. This remains true even if the distillation process is catalytically assisted by pure-state entanglement and every operation is allowed, which preserves the positivity of the partial transpose. It is shown that reversibility occurs only in cases where the state is a tagged mixture. The reversible cases are shown to be completely characterized by minimal uncertainty vectors for entropic uncertainty relations.

Vollbrecht, Karl Gerd H.; Wolf, Michael M. [Institut fuer Mathematische Physik, Mendelssohnstrasse 3, D-38106 Braunschweig (Germany); Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching (Germany); Werner, Reinhard F. [Institut fuer Mathematische Physik, Mendelssohnstrasse 3, D-38106 Braunschweig (Germany)

2004-06-01T23:59:59.000Z

431

Magic-state distillation with the four-qubit code  

E-Print Network (OSTI)

The distillation of magic states is an often-cited technique for enabling universal quantum computing once the error probability for a special subset of gates has been made negligible by other means. We present a routine for magic-state distillation that reduces the required overhead for a range of parameters of practical interest. Each iteration of the routine uses a four-qubit error-detecting code to distill the +1 eigenstate of the Hadamard gate at a cost of ten input states per two improved output states. Use of this routine in combination with the 15-to-1 distillation routine described by Bravyi and Kitaev allows for further improvements in overhead.

Adam M. Meier; Bryan Eastin; Emanuel Knill

2012-04-18T23:59:59.000Z

432

Heat Integrated Distillation through Use of Microchannel Technology  

Energy.gov (U.S. Department of Energy (DOE))

This factsheet describes a research project whose goal is to develop a breakthrough distillation process using Microchannel Process Technology to integrate heat transfer and separation into a single unit operation.

433

DYNAMICS AND CONTROL OF DISTILLATION COLUMNS -A CRITICAL SURVEY  

E-Print Network (OSTI)

.g., Rosenbrock, 1962a-d, and by Rademaker and Rijnsdorp from Shell in the Nether- lands. These people did on distillation dynamics with 173 refer- ences. The book by Rademaker et al. 1975 con- tains about 300 references

Skogestad, Sigurd

434

Optimization of experimental conditions for recovery of coking coal fines by oil agglomeration technique  

Science Journals Connector (OSTI)

The significance of coking coal in the metallurgical sector as well as the meager coking coal reserves across the globe increase the necessity to recover coking coal fines from the fine coking coal slurries generated from coal preparation and utilization activities. Oil agglomeration studies were carried out by varying the experimental conditions for maximum recovery of coking coal fines i.e., yield of the agglomerates. The various operational parameters studied were oil dosage, agitation speed, agglomeration time and pulp density. By using Taguchi experimental design, oil dosage (20%), agitation speed (1100 rpm), agglomeration time (3 min) and pulp density (4.5%) were identified as the optimized conditions. A confirmation experiment has also been carried out at the optimized conditions. The percentage contribution of each parameter on agglomerate yield was analyzed by adopting analysis of variance (ANOVA) statistical method as well as multiple linear regression analysis. The order of influence of the parameters on the agglomerate yield is of the following order: pulp density > oil dosage > agitation speed > agglomeration time. A mathematical model was developed to fit the set of experimental conditions with the yield obtained at each test run and also at the optimized conditions. The experimentally obtained yield was compared with the predicted yield of the model and the results indicate a maximum error of 5% between the two. A maximum yield of 90.42% predicted at the optimized conditions appeared to be in close agreement with the experimental yield thus indicating the accuracy of the model in predicting the results.

G.H.V.C. Chary; M.G. Dastidar

2010-01-01T23:59:59.000Z

435

Determination of plate efficiencies for conventional distillation columns  

E-Print Network (OSTI)

DETERMINATION OF PLATE EFFICIENCIES FOR CONVENTIONAL DISTILLATION COIUMNS A Thesis By Thomas Raymond Harris Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE May 1962 Ma)or Sub)ect t Chemical Engineering DETERMINATION OF PLATE EFFICIENCIES FOR CONVENTIONAL DISTILLATION COLUMNS A Thesis Thomas Raymond Harris Approred as to style and content bye Chairman of ommittee Head...

Harris, Thomas Raymond

2012-06-07T23:59:59.000Z

436

Interferometric distillation and determination of unknown two-qubit entanglement  

E-Print Network (OSTI)

We propose a scheme for both distilling and quantifying entanglement, applicable to individual copies of an arbitrary unknown two-qubit state. It is realized in a usual two-qubit interferometry with local filtering. Proper filtering operation for the maximal distillation of the state is achieved, by erasing single-qubit interference, and then the concurrence of the state is determined directly from the visibilities of two-qubit interference. We compare the scheme with full state tomography.

S. -S. B. Lee; H. -S. Sim

2010-06-08T23:59:59.000Z

437

Interferometric distillation and determination of unknown two-qubit entanglement  

SciTech Connect

We propose a scheme for both distilling and quantifying entanglement, applicable to individual copies of an arbitrary unknown two-qubit state. It is realized in a usual two-qubit interferometry with local filtering. Proper filtering operation for the maximal distillation of the state is achieved by erasing single-qubit interference, and then the concurrence of the state is determined directly from the visibilities of two-qubit interference. We compare the scheme with full state tomography.

Lee, S.-S. B.; Sim, H.-S. [Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of)

2009-05-15T23:59:59.000Z

438

Distillation and Dehydro Reactors Advanced Process Conrol Freeport Texas PLant  

E-Print Network (OSTI)

Distillation and Dehydro Reactors Advanced Process Control Freeport Texas Plant ESL-IE-14-05-16 Proceedings of the Thrity-Sixth Industrial Energy Technology Conference New Orleans, LA. May 20-23, 2014 G-KTI, Polyamide and Intermediates Distillation... APC 6/2/2014 INTERNAL; CONFIDENTIAL 2 APC is a collection of two different control and automation technologies • Multivariable Predictive Control (MPC). In this approach, an empirical, dynamic, plant model is used in combination with both a steady...

Eisele, D.

2014-01-01T23:59:59.000Z

439

Composition-Explicit Distillation Curves of Alternative Turbine Fuels  

Science Journals Connector (OSTI)

National Institute of Standards and Technology (NIST), 325 Broadway, Boulder, Colorado 80305, United States ... In recent years, environmental considerations, the potential for supply disruptions, and rising fuel prices have led to the development of turbine fuels produced from non-petroleum feedstocks. ... We found that the distillation curves of the chicken-fat-derived fuel and the gas–liquid turbine fuel were similar to those of JP-8, deviating the most at high distillate volume fractions. ...

R. V. Gough; T. J. Bruno

2012-12-03T23:59:59.000Z

440

New Design Methods and Algorithms for Multi-component Distillation Processes  

Energy.gov (U.S. Department of Energy (DOE))

Fact Sheet Overviewing the Improved Energy Efficiency through the Determination of Optimal Distillation Configuration

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Reducing WWW Latency and Bandwidth Requirements by RealTime Distillation  

E-Print Network (OSTI)

Reducing WWW Latency and Bandwidth Requirements by Real­Time Distillation Armando Fox and Eric A Distillation and Refinement Can Help 1. The Concept of Datatype­Specific Distillation 2. Refinement 3. Trading. Optimizing for Rendering on Impoverished Devices 3. An Implemented HTTP Proxy Based on Real­Time Distillation

California at Berkeley, University of

442

Dividing wall columns for heterogeneous azeotropic distillation Quang-Khoa Le1  

E-Print Network (OSTI)

Dividing wall columns for heterogeneous azeotropic distillation Quang-Khoa Le1 , Ivar J. Halvorsen2 of this work is to implement heterogeneous azeotropic distillation schemes in a dividing wall column (DWC distillation, Petlyuk arrangement, energy saving. 1. Introduction Distillation is one of the most energy

Skogestad, Sigurd

443

Contaminants in Used Lubricating Oils and Their Fate during Distillation/Hydrotreatment Re-Refining  

Science Journals Connector (OSTI)

Contaminants in Used Lubricating Oils and Their Fate during Distillation/Hydrotreatment Re-Refining ...

Dennis W. Brinkman; John R. Dickson

1995-01-01T23:59:59.000Z

444

Analysis of Marine Diesel Fuel with the Advanced Distillation Curve Method  

Science Journals Connector (OSTI)

Analysis of Marine Diesel Fuel with the Advanced Distillation Curve Method ... Energy Fuels, 2013, 27 (2), ...

Peter Y. Hsieh; Kathryn R. Abel; Thomas J. Bruno

2013-01-17T23:59:59.000Z

445

Process for removing naphthenic acids from petroleum distillates  

SciTech Connect

A liquid extraction process is described for removing naphthenic acids from naphthenic acid containing petroleum distillates boiling within the range of about 180/sup 0/-600/sup 0/C. and having an acid number of at least about 0.2 which process comprises the steps of: (a) intimately contacting the petroleum distillates with a solvent consisting essentially of methanol, water, and about from 2-20 wt. % ammonia and having a methanol: water ratio in the range of about from 0.2 to 3 parts by weight of methanol per part by weight of water and using an ammonia to petroleum distillate ratio of about 0.1-1 part by weight of ammonia per 100 parts by weight of the petroleum distillate. This selectively extracts the naphthenic acids into the solvent and yielding an immiscible two-phase liquid mixture, one of which is naphthenic acid-rich solvent phase and the other of which is a substantially napthenic acid-free petroleum distillate phase; and (b) separating and respectively recovering the naphtenic acid-rich solvent phase and petroleum distillate phase.

Danzik, M.

1987-01-06T23:59:59.000Z

446

Energy Conservation Design Features of Retrofit and New Units . . . One Company's Experience  

E-Print Network (OSTI)

, hydrotreating, coking, sulfur recovery, and sulfuric acid manufacturing. Residual oil fractions are almost totally upgraded to lighter products via direct processing in the cat crackers or by delayed coking. Like most refineries our main products...

Prothro, B.

1981-01-01T23:59:59.000Z

447

Spectroscopic studies on the formation of coke on individual Fluid Catalytic Cracking particles: the effect of poisoning metal compounds.  

E-Print Network (OSTI)

??The formation of coke on individual Fluid Catalytic Cracking (FCC) catalyst particles was studied using UV/Vis microspectroscopy and confocal fluorescence microscopy, with n-hexane cracking as… (more)

Goetze, J.G.

2013-01-01T23:59:59.000Z

448

Influence of the batch's coke-ore ratio and distribution on the porosity of the melting zone  

SciTech Connect

The variation in gas permeability in the melting zone is considered as a function of the height and configuration of the coke packing and the ore component of the batch.

V.P. Tarasov; L.V. Bykov; P.V. Tarasov [Priazovsk State Technical University, Mariupol (Ukraine)

2008-09-15T23:59:59.000Z

449

Deposition and characteristics of coke over a H-ZSM5 zeolite-based catalyst in the MTG process  

SciTech Connect

The influence of reaction conditions in the transformation of methanol into gasoline (temperature, time on stream, and contact time) on the deposition and nature of coke (composition, H/C ratio) and on its location in the porous structure of a H-ZSM5 zeolite-based catalyst has been studied in an isothermal fixed-bed integral reactor. The distribution of the coke within the porous structure of the catalyst is similar to that proposed for other reactions on H-ZSM5 zeolites, and the highly hydrogenated character of coke and its instability is noteworthy. Coke deposition has been related to catalyst acidic site deterioration and to a kinetic model for catalyst deactivation in an integral reactor.

Benito, P.L.; Gayubo, A.G.; Aguayo, A.T.; Olazar, M.; Bilbao, J. [Univ. del Pais Vasco, Bilbao (Spain). Dept. de Ingenieria Quimica] [Univ. del Pais Vasco, Bilbao (Spain). Dept. de Ingenieria Quimica

1996-11-01T23:59:59.000Z

450

Production of Syngas via Partial Oxidation and CO2 Reforming of Coke Oven Gas over a Ni Catalyst  

Science Journals Connector (OSTI)

Production of Syngas via Partial Oxidation and CO2 Reforming of Coke Oven Gas over a Ni Catalyst ... The yield of produced syngas increases with an increase in temperature. ...

Jianzhong Guo; Zhaoyin Hou; Jing Gao; Xiaoming Zheng

2008-04-05T23:59:59.000Z

451

Reducing the sulfur content of coke by increasing the content of thermally conditioned g coal in the batch  

Science Journals Connector (OSTI)

In periods of economic growth, Ukrainian coke plants face a shortage of Zh and K coal, because of the high demand. In periods of economic stagnation, conversely, there is an excess of Zh coal, on account of the d...

E. I. Malyi

2014-05-01T23:59:59.000Z

452

3D Computational Fluid Dynamics Simulation of Natural Coke Steam Gasification in General and Improved Fluidized Beds  

Science Journals Connector (OSTI)

The thermal characteristics of natural coke steam gasification in a fluidized bed were three-dimensionally (3D) simulated based on the computational fluid dynamics (CFD) method using Fluent code. ... However, this technology seems difficult to carry out due to its abradability, hard ignition, hot burst, and so on. ... In short, all the results in this work have a significance to provide the theoretical basis for the design, operational optimization, and scale-up of the natural coke steam gasification process. ...

Ya-li Tang; Dai-jun Liu; Yu-hong Liu; Qian Luo

2010-09-30T23:59:59.000Z

453

Air pollution from a large steel factory: polycyclic aromatic hydrocarbon emissions from coke-oven batteries  

SciTech Connect

A systematic investigation of solid and gaseous atmospheric emissions from some coke-oven batteries of one of Europe's largest integrated steel factory (Taranto, Italy) has been carried out. These emissions, predominantly diffuse, originate from oven leakages, as well as from cyclic operations of coal loading and coke unloading. In air monitoring samples, polycyclic aromatic hydrocarbons (PAHs) were consistently detected at concentrations largely exceeding threshold limit values. By means of PAHs speciation profile and benzo-(a)pyrene (BaP) equivalent dispersion modeling from diffuse sources, the study indicated that serious health risks exist not only in working areas, but also in a densely populated residential district near the factory. 30 refs., 5 figs., 3 tabs.

Lorenzo Liberti; Michele Notarnicola; Roberto Primerano; Paolo Zannetti [Technical University of Bari, Bari (Italy). Department of Environmental Engineering and Sustainable Development

2006-03-15T23:59:59.000Z

454

Linings with optimum heat-emission surfaces for cars receiving and transporting incandescent coke  

SciTech Connect

The least reliable components of the cars which receive and transport incandescent coke are the lining plates. This applies to both the quenching cars used for wet quenching and the hot-coke cars used in the dry cooling process. Technical advances have been described whereby the life of car linings is prolonged by increasing heat emission from the lining plate surfaces. As the heat emission level is enhanced the mean plate temperature is lowered and the lining life thereby prolonged; moreover, the between-servicings period is prolonged. This involves providing fins on the non-working (outer) plate surfaces. The problem of optimizing the size and shape of the fins with reference to heat emission remains unsolved: the requirement is maximum heat emission from plates of a given weight, or conversely minimum plate weight for a given heat emission level. 6 refs., 3 figs.

Kotlyar, B.D.; Pleshkov, P.I.; Gadyatskii, V.G. [and others

1992-12-31T23:59:59.000Z

455

Treating process wastewater employing vacuum distillation using mechanical vapor recompression  

SciTech Connect

Process wastewater has been successfully treated using an enhanced variable vacuum distillation system (VVDS). The removal of contaminants is achieved initially by degassing the liquid under an intense vacuum which removes the volatile organic compounds. The resulting liquid is then distilled under a vacuum using mechanical vapor recompression. The system was invented by Derald McCabe. This innovative treatment system removes virtually all of the contaminants, such as TSS, TDS, BOD{sub 5}, COD, heavy metals and mineral compounds. The resultant aqueous portion normally returns to a neutral pH. Due to the unique system operation, scaling problems (often encountered in conventional distillation) have not been detected in this system. The VVDS is extremely energy efficiency because the heat for distillation is generated and recycled mechanically. Using electricity as the energy source, the approximate operating cost, based on $0.05 KWH, may vary from $0.005 to $0.01 per gallon depending on the size and capacity of the equipment. Based on applications in waste streams performed to-date, the VVDS process has yielded a distilled water stream and the concentrated solids have been used as a byproduct or as a concentrated non-dischargeable waste for disposal.

McCabe, D.L. [Brandt, Houston, TX (United States)] [Brandt, Houston, TX (United States); Vivona, M.A. [ICF Kaiser Engineers, Inc., Houston, TX (United States). Water and Wastewater Dept.] [ICF Kaiser Engineers, Inc., Houston, TX (United States). Water and Wastewater Dept.

1999-05-01T23:59:59.000Z

456

Non-Locality Distillation is Impossible for Isotropic Quantum Systems  

E-Print Network (OSTI)

Non-locality is a powerful resource for various communication and information theoretic tasks, e.g., to establish a secret key between two parties, or to reduce the communication complexity of distributed computing. Typically, the more non-local a system is, the more useful it is as a resource for such tasks. We address the issue of non-locality distillation, i.e., whether it is possible to create a strongly non-local system by local operations on several weakly non-local ones. More specifically, we consider a setting where non-local systems can be realized via measurements on underlying shared quantum states. The hardest instances for non-locality distillation are the isotropic quantum systems: if a certain isotropic system can be distilled, then all systems of the same non-locality can be distilled as well. The main result of this paper is that non-locality cannot be distilled from such isotropic quantum systems. Our results are based on the theory of cross norms defined over the tensor product of certain Banach spaces. In particular, we introduce a single-parameter family of cross norms, which is used to construct a hierarchy of convex sets that are closed under local operations. This hierarchy interpolates between the set of local systems and an approximation to the set of quantum systems.

Dejan D. Dukaric

2011-05-12T23:59:59.000Z

457

Unsteady-state kinetic simulation of naphtha reforming and coke combustion processes in the fixed and moving catalyst beds  

Science Journals Connector (OSTI)

Abstract The work is dedicated to the construction of kinetics models for the naphtha reforming process and the adjacent process of catalyst regeneration by coke combustion. The proposed kinetic model for the reforming process is based on the use of common rate equations for the groups of similar reactions with account of difference in reaction rates for individual homologs within these groups by simple correlations with thermodynamic properties (first of all – with the values of Gibbs free energy) of individual reactions and by other simplification methods. Such approach gives the way to construct the kinetics models optimal from the point of view of compromise between accuracy and simplicity. The proposed naphtha reforming model is characterized with the high level of kinetic scheme detailization (62 individual and group reactants and 146 individual reactions), at the same it is rather simple and provides the accurate description of the experimental data using only 22 kinetic parameters. This model is thermodynamically consistent and provides accurate description of experimental data in a wide range of process parameters. Account of catalyst deactivation by coke deposition in the model gives the way to simulate transient reforming process performance both in fixed and moving catalyst beds. Kinetics of coke combustion for catalysts with moderate coke content (up to 3% mass) may described by simple kinetic equation with apparent reaction rate orders closed to unit for relative coke content and to 1/2 for oxygen. Demonstration simulations of naphtha reforming and coke combustion processes are presented.

Andrey N. Zagoruiko; Alexander S. Belyi; Mikhail D. Smolikov; Alexander S. Noskov

2014-01-01T23:59:59.000Z

458

Operating temperature effects on nozzle coking in a cottonseed oil fueled diesel engine  

E-Print Network (OSTI)

OPERATING TEMPERATURE EFFECTS ON NOZZLE COKING IN A COTTONSEED OIL FUELED DIESEL ENGINE A Thesis CHARLES MICHAEL YARBROUGH Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirements for the degree cf... MASTER OF SCIENCE December 1984 Major Subject: Agricultural Engineering OPERATING TEMPERATURE EFFECTS ON NOZZLE CORING IN A COTTONSEED OIL FUELED DIESEL ENGINE A Thesis by CHARLES MICHAEL YARBROUGH Approved as to style and content by: ayne A. Le...

Yarbrough, Charles Michael

2012-06-07T23:59:59.000Z

459

Profitability analysis of non-coking coal preparation for power plants in India  

SciTech Connect

Currently coal-based power plants produce about 70% of the total electricity generated in India, where non-coking (steam) coals are utilized mostly without any preparation. A massive capacity addition of at least 140,000 MWe is required (over the 81,000 MWe of current installed capacity) during the next 15 years to meet growing energy demand. Such a rapid expansion of power generation capacity poses a serious challenge to the environment (at emission controls) and transportation infrastructure in India. Furthermore, the high ash content of indigenous coals and concentration of coal mines in central and northeastern India away from urban centers exacerbate the problem. Thus, coal preparation is envisioned to play a major role in shaping the energy future of India. Under the Indo-US Coal Preparation Program, the US Department of Energy`s Pittsburgh Energy Technology Center (PETC) is coordinating coal preparation activities for the US Agency for International Development. In this context, a detailed analysis of the washability characteristics of non-coking coals was performed using the PETC Coal Preparation Plant Simulator (CPPS) to identify coal preparation strategies for India. Based on these strategies, a profitability analysis of non-coking coal preparation has been conducted considering coal preparation and transportation costs, and coal quality impacts on power plant operations. This paper summarizes the results of this analysis and quantifies the significance of coal preparation for the Indian power sector.

Gollakota, S.V.; Rao, S.N. [Burns and Roe Services Corp., Pittsburgh, PA (United States). Pittsburgh Energy Technology Center; Staats, G.E. [Dept. of Energy, Pittsburgh, PA (United States). Pittsburgh Energy Technology Center

1996-12-31T23:59:59.000Z

460

Distillate Imports Surged to Meet Supply/Demand Imbalance  

Gasoline and Diesel Fuel Update (EIA)

receded when weather moderated and new supply began to receded when weather moderated and new supply began to arrive. Imports were the largest source of new supply that arrived to relieve the imbalance that was behind the price spike. This graph shows the dramatic increase on a calendar monthly average basis. During the three weeks ending February 25, distillate fuel oil imports averaged 566 thousand barrels per day. During the prior four weeks, imports only averaged 162 thousand barrels per day. Refinery production on the East Coast also increased. For the three weeks ending February 25, East Coast distillate production averaged 478 thousand barrels per day, which was an increase of about 91 thousand barrels per day or 24% over the prior four weeks. (During the same time period, national distillate production only rose 7 percent.)

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Entanglement distillation by dissipation and continuous quantum repeaters  

E-Print Network (OSTI)

Even though entanglement is very vulnerable to interactions with the environment, it can be created by purely dissipative processes. Yet, the attainable degree of entanglement is profoundly limited in the presence of noise sources. We show that distillation can also be realized dissipatively, such that a highly entanglement steady state is obtained. The schemes put forward here display counterintuitive phenomena, such as improved performance if noise is added to the system. We also show how dissipative distillation can be employed in a continuous quantum repeater architecture, in which the resources scale polynomially with the distance.

Karl Gerd H. Vollbrecht; Christine A. Muschik; J. Ignacio Cirac

2010-11-18T23:59:59.000Z

462

An example of alkalization of SiO{sub 2} in a blast furnace coke  

SciTech Connect

Scanning electron microscopy and an electron-microprobe analysis of a sample of blast furnace (BF) coke have revealed alkalization (5.64 wt % Na{sub 2}O + K{sub 2}O) and Al saturation (17.28 wt % Al{sub 2}O{sub 3}) of SiO{sub 2} by BF gases. The K/Na{sub at} value of 1.15 in the new phase (alteration zone) reflects close atomic proportions of the elements and suggests that the abilities to incorporate K and Na during the process are almost equal. This Al saturation and alkalization of SiO{sub 2} indicates an active role for Al along with alkali metals in BF gases. The average width of the altered area in the SiO{sub 2} grain is about 10 m, which suggests that SiO{sub 2} particles of that size can be transformed fully to the new phase, provided that at least one of their faces is open to an external pore (surface of the coke) or internal pore with circulating BF gases. The grains that exceed 10 {mu}m can only be partly altered, which means that smaller SiO{sub 2} grains can incorporate more alkali metals and Al (during their transformation to the Al and alkali-bearing phase) than a similar volume of SiO{sub 2} concentrated in larger grains. Thermodynamic calculations for 100 g{sub solid}/100 g{sub gas} and temperatures 800-1800{sup o}C have shown that the BF gases have very little or no effect on the alkalization of SiO{sub 2}. If the alteration process described in this paper proves to be a generalized phenomenon in blast furnace cokes, then the addition of fine-grained quartz to the surface of the coke before charging a BF can be useful for removing of some of the Al and alkali from the BF gases and reduce coke degradation by alkalis, or at least improve its properties until the temperature reaches approximately 2000{sup o}C. 22 refs., 5 figs., 1 tab.

S.S. Gornostayev; P.A. Tanskanen; E.-P. Heikkinen; O. Kerkkonen; J.J. Haerkki [University of Oulu, Oulu (Finland). Laboratory of Process Metallurgy

2007-09-15T23:59:59.000Z

463

Usiing NovoCOS cleaning equipment in repairing the furnace-chamber lining in coke batteries 4 & 5 at OAO Koks  

SciTech Connect

Experience with a new surface-preparation technology for the ceramic resurfacing of the refractory furnace-chamber lining in coke batteries is described.

S.G. Protasov; R. Linden; A. Gross [OAO Koks, Kemerovo (Russian Federation)

2009-05-15T23:59:59.000Z

464

"Distillation, Absorption and Extraction" April 5-6, 2001 in Bamberg,, Halvorsen NTNU Department of Chemical Engineering  

E-Print Network (OSTI)

"Distillation, Absorption and Extraction" April 5-6, 2001 in Bamberg,, Halvorsen NTNU Department Distillation Arrangements by Ivar J. Halvorsen and Sigurd Skogestad Norwegian University of Science and Technology (NTNU) Department of Chemical Engineering Working Party on "Distillation, Absorption

Skogestad, Sigurd

465

Second Price Component: Spread Impacted by Distillate Supply/Demand Balance  

Gasoline and Diesel Fuel Update (EIA)

8 8 Notes: While crude oil prices will be a major factor impacting distillate prices this winter, another important factor is the U.S. distillate supply/demand balance, as measured by distillate stocks. The distillate supply/demand balance influences the spread between spot distillate and spot crude oil prices. For example, when stocks are higher than normal, the spread will be lower than usual. This spread is the price incentive that encourages or discourages changes in supply. While high stocks in the distillate market are good news for consumers, an excess is bad news for refiners. Distillate spreads during the winter of 1998-99 and throughout most of 1999 were well below average. Distillate stocks were very high during this period, partially as a result of warm weather keeping demand down.

466

T-534: Vulnerability in the PDF distiller of the BlackBerry Attachment...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PDF distiller of the BlackBerry Attachment Service for the BlackBerry Enterprise Server T-534: Vulnerability in the PDF distiller of the BlackBerry Attachment Service for the...

467

Stagewise Dilute-Acid Pretreatment and Enzyme Hydrolysis of Distillers’ Grains and Corn Fiber  

Science Journals Connector (OSTI)

Distillers’ grains and corn fiber are the coproducts of the corn dry grind and wet milling industries, respectively. Availability of distillers’ grains and corn fiber at the ethanol plant and their ... three-stag...

Hossein Noureddini; Jongwon Byun; Ta-Jen Yu

2009-11-01T23:59:59.000Z

468

Table A3. Refiner/Reseller Prices of Distillate and Residual...  

Annual Energy Outlook 2012 (EIA)

Fuel Oils, by PAD District, 1983-Present (Cents per Gallon Excluding Taxes) Geographic Area Year No. 1 Distillate No. 2 Distillate a No. 4 Fuel b Residual Fuel Oil Sales to End...

469

Application of a Plantwide Control Design Procedure to a Distillation Column with Heat Pump  

E-Print Network (OSTI)

(Larsson & Skogestad 2001) to a distillation column heat-integrated by using a heatpump. Top-down analysis) and apply it to a distillation column with heatpump. Plantwide control design should start by formulating

Skogestad, Sigurd

470

Cost comparative study for new water distillation techniques by solar energy using  

Science Journals Connector (OSTI)

The aim of this work is to compare the extra added cost of different new water distillation techniques to the cost of extra collected distilled water. The comparison is between; a traditional single slope sola...

Iyad M. Muslih; Salan M. Abdallah; Wafa Abu Husain

2010-03-01T23:59:59.000Z

471

Azeotropic Distillation as a Technique for Emulsion Size Reduction  

E-Print Network (OSTI)

Prism/PCCM #12;Overview -Intro- What is Microfluidics? What is Heterogeneous Azeotropic Distillation to produce with a narrow size distribution by way of microfluidics. Want to make emulsions with droplets 30. Depiction of particles lodging in the lung capillary bed. #12;Background Microfluidic Droplet Generation

Petta, Jason

472

Optimal distillation of three-qubit W states  

E-Print Network (OSTI)

Some of the asymmetric three qubit $W$ states are used for perfect teleportation, superdense coding and quantum information splitting. We present the protocols for the optimal distillation of the asymmetric as well as the symmetric $W$ states from a single copy of any three qubit $W$ class pure state.

Ali Yildiz

2010-07-19T23:59:59.000Z

473

Optimal distillation of three-qubit W states  

SciTech Connect

Some of the asymmetric three-qubit W states are used for perfect teleportation, superdense coding, and quantum-information splitting. We present the protocols for the optimal distillation of the asymmetric as well as the symmetric W states from a single copy of any three-qubit W class pure state.

Yildiz, Ali [Department of Physics, Istanbul Technical University, Maslak 34469, Istanbul (Turkey)

2010-07-15T23:59:59.000Z

474

Optimal Control of a Continuous Distillation Process under Probabilistic Constraints  

E-Print Network (OSTI)

. The aim is to find a control (feed rate, heat supply, reflux rate) which is optimal with respect to energyOptimal Control of a Continuous Distillation Process under Probabilistic Constraints René Henrion1 to be separated or to its temperature. Typically, the un- certainties are not completely irregular but follow

Henrion, René

475

Modelling and optimisation of batch distillation involving esterification and hydrolysis reaction systems. Modelling and optimisation of conventional and unconventional batch distillation process: Application to esterification of methanol and ethanol using acetic acid and hydrolysis of methyl lactate system.  

E-Print Network (OSTI)

??Batch distillation with chemical reaction when takes place in the same unit is referred to as batch reactive distillation process. The combination reduces the capital… (more)

Edreder, Elmahboub A.

2010-01-01T23:59:59.000Z

476

Application of artificial neural network to study the performance of jig for beneficiation of non-coking coal  

Science Journals Connector (OSTI)

Non-coking coal is the major resource of energy in India. Apart from its utilization in energy sector, the other major application of this coal is in metallurgical sector. The resource of high quality of non-coking coal is not available as per demand; as a result beneficiation of non-coking coal is now becoming essential. Jigging is one of the economical physical beneficiation processes for Indian high ash non-coking coal. At present scenario in coal washery in India, below 3 mm size is not being processed. Attempt has been taken to beneficiate the fine size non-coking coal fractions generated at different sizes of bed materials, feed rates and water rates using laboratory Denver mineral jig. The performance of jig was evaluated in term of Ep and imperfection value. Furthermore artificial neural network (ANN) model has been developed for determining combustible recovery and ash percent of the concentrate. The ANN architecture is made up of three layers (input – hidden – output). A back propagation algorithm was used for training of the ANN model. It has been observed that the predicted values by ANN model are in good agreement with the experimental results.

Lopamudra Panda; A.K. Sahoo; A. Tripathy; S.K. Biswal; A.K. Sahu

2012-01-01T23:59:59.000Z

477

Proposal of a novel multifunctional energy system for cogeneration of coke, hydrogen, and power - article no. 052001  

SciTech Connect

This paper proposes a novel multifunctional energy system (MES), which cogenerates coke, hydrogen, and power, through the use of coal and coke oven gas (COG). In this system, a new type of coke oven, firing coal instead of COG as heating resource for coking, is adopted. The COG rich in H{sub 2} is sent to a pressure swing adsorption (PSA) unit to separate about 80% of hydrogen first, and then the PSA purge gas is fed to a combined cycle as fuel. The new system combines the chemical processes and power generation system, along with the integration of chemical conversion and thermal energy utilization. In this manner, both the chemical energy of fuel and thermal energy can be used more effectively. With the same inputs of fuel and the same output of coking heat, the new system can produce about 65% more hydrogen than that of individual systems. As a result, the thermal efficiency of the new system is about 70%, and the exergy efficiency is about 66%. Compared with individual systems, the primary energy saving ratio can reach as high as 12.5%. Based on the graphical exergy analyses, we disclose that the integration of synthetic utilization of COG and coal plays a significant role in decreasing the exergy destruction of the MES system. The promising results obtained may lead to a clean coal technology that will utilize COG and coal more efficiently and economically.

Jin, H.G.; Sun, S.; Han, W.; Gao, L. [Chinese Academy of Sciences, Beijing (China)

2009-09-15T23:59:59.000Z

478

MULTIVESSEL BATCH DISTILLATION SIGURD SKOGESTAD 1 , BERND WITTGENS, EVA S RENSEN 2  

E-Print Network (OSTI)

MULTIVESSEL BATCH DISTILLATION SIGURD SKOGESTAD 1 , BERND WITTGENS, EVA S RENSEN 2 and RAJAB LITTO column presented in this paper provides a generalization of previously proposed batch distillation schemes. The economic potential of the multivessel batch distillation under total re ux is demon- strated

Skogestad, Sigurd

479

Experimental and Theoretical Studies on the Start-Up Operation of a Multivessel Batch Distillation Column  

E-Print Network (OSTI)

Experimental and Theoretical Studies on the Start-Up Operation of a Multivessel Batch DistillationVersity of Science and Technology, Trondheim, Norway Multivessel batch distillation is a promising alternative to conventional batch distillation. Earlier studies proved the feasibility of temperature control in a closed

Skogestad, Sigurd

480

Non-interactive correlation distillation, inhomogeneous Markov chains, and the reverse Bonami-Beckner inequality  

E-Print Network (OSTI)

Non-interactive correlation distillation, inhomogeneous Markov chains, and the reverse Bonami In this paper we study non-interactive correlation distillation (NICD), a generalization of noise sen- sitivity distillation (NICD), previously considered in [5, 31, 39]. In its most general form the problem involves k

O'Donnell, Ryan

Note: This page contains sample records for the topic "distillation hydrotreating coking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Topic Distillation with Query-Dependent Link Connections and Page Characteristics  

E-Print Network (OSTI)

6 Topic Distillation with Query-Dependent Link Connections and Page Characteristics MINGFANG WU about a topic. Finding such results is called topic distillation. Previous research has shown statistics. This article presents a new approach to improve topic distillation by exploring the use

Wu, Mingfang

482

Integrated Column Designs for Minimum Energy and Entropy Requirements in Multicomponent Distillation  

E-Print Network (OSTI)

Distillation Ivar J. Halvorsen1 and Sigurd Skogestad Norwegian University of Science and Technology, Department at the Topical conference on Separations Technology, Session 23 - Distillation Modeling and Processes II. 2001 Column Designs for Minimum Energy and Entropy Requirements in Multicomponent Distillation Ivar J

Skogestad, Sigurd

483

Manifold-based starting point generation and its application to distillation  

E-Print Network (OSTI)

Manifold-based starting point generation and its application to distillation Ali Baharev*, Ferenc-states in homogeneous azeotropic distillation . . . . . . . . . . 11 5.2 Multiple steady-states in ideal two-product distillation . . . . . . . . . . . . . . 11 6 Conclusion 13 A Ordering sparse matrices 14 A.1 Ordering to block

Neumaier, Arnold

484

MULTIVESSEL BATCH DISTILLATION -EXPERIMENTAL VERIFICATION Bernd Wittgens and Sigurd Skogestad1  

E-Print Network (OSTI)

MULTIVESSEL BATCH DISTILLATION -EXPERIMENTAL VERIFICATION Bernd Wittgens and Sigurd Skogestad1 The experimental veri cation of the operation of a multivessel batch distillation column, operated under total re vessels, provides a generalization of previously proposed batch distillation schemes. We propose a simple

Skogestad, Sigurd

485

Multiple-copy distillation and purification of phase-diffused squeezed states  

SciTech Connect

We provide a detailed theoretical analysis of multiple-copy purification and distillation protocols for phase-diffused squeezed states of light. The standard iterative distillation protocol is generalized to a collective purification of an arbitrary number of N copies. We also derive a semianalytical expression for the asymptotic limit of the iterative distillation and purification protocol and discuss its properties.

Marek, Petr [School of Mathematics and Physics, The Queen's University, Belfast BT7 1NN (United Kingdom); Fiurasek, Jaromir [Department of Optics, Palacky University, 17. listopadu 50, 77200 Olomouc (Czech Republic); Hage, Boris; Franzen, Alexander; DiGugliemo, James; Schnabel, Roman [Max-Planck-Institut fuer Gravitationsphysik (Albert-Einstein-Institut) and Leibniz Universitaet Hannover, Callinstr. 38, 30167 Hannover (Germany)

2007-11-15T23:59:59.000Z

486

MULTIVESSEL BATCH DISTILLATION SIGURD SKOGESTAD 1 , BERND WITTGENS, EVA SRENSEN 2  

E-Print Network (OSTI)

MULTIVESSEL BATCH DISTILLATION SIGURD SKOGESTAD 1 , BERND WITTGENS, EVA S�RENSEN 2 and RAJAB LITTO column presented in this paper provides a generalization of previously proposed batch distillation schemes. The economic potential of the multivessel batch distillation under total reflux is demon­ strated

Skogestad, Sigurd

487

Use of Two Distillation Columns in Systems with Maximum Temperature Limitations  

E-Print Network (OSTI)

Use of Two Distillation Columns in Systems with Maximum Temperature Limitations Rebecca H. Masel, Pennsylvania 18015, United States ABSTRACT: Maximum temperature limitations are encountered in distillation of the bottoms product fixes the column base pressure and, hence, the condenser pressure. The distillate

Gilchrist, James F.

488

Non-interactive correlation distillation, inhomogeneous Markov chains, and the reverse  

E-Print Network (OSTI)

Non-interactive correlation distillation, inhomogeneous Markov chains, and the reverse Bonami In this paper we study non-interactive correlation distillation (NICD), a generalization of noise sensitivity in this paper is the problem of non-interactive correlation distil- lation (NICD), previously considered in [5

Regev, Oded

489

Synthesizing Representative I/O Workloads Using Iterative Distillation Zachary Kurmas  

E-Print Network (OSTI)

Synthesizing Representative I/O Workloads Using Iterative Distillation Zachary Kurmas College proper- ties are "key" for a given workload and storage system. We have developed a tool, the Distiller, that automati- cally identifies the key properties ("attribute-values") of the workload. The Distiller then uses

Kurmas, Zachary

490

Enhanced Topic Distillation using Text, Markup Tags, and Hyperlinks Soumen Chakrabarti  

E-Print Network (OSTI)

Enhanced Topic Distillation using Text, Markup Tags, and Hyperlinks Soumen Chakrabarti Mukul Joshi Vivek Tawde IIT Bombay ABSTRACT Topic distillation is the analysis of hyperlink graph structure to authorities). Topic distillation is becoming common in Web search engines, but the best-known algorithms model

Chakrabarti, Soumen

491

Noisy Processing and the Distillation of Private States Joseph M. Renes1  

E-Print Network (OSTI)

Noisy Processing and the Distillation of Private States Joseph M. Renes1 and Graeme Smith2 1 general private state is distilled. Besides a more general target state, the usual entanglement distillation tools are employed (in par- ticular, Calderbank-Shor-Steane (CSS)-like codes), with the crucial

492

On the Dynamics of Batch Distillation : A Study of Parametric Sensitivity in Ideal  

E-Print Network (OSTI)

On the Dynamics of Batch Distillation : A Study of Parametric Sensitivity in Ideal Binary Columns sensitivity in batch distillation processes. By considering the effect of small changes in the operating #12; 1 Introduction Batch distillation has become of increasing importance in industry during the last

Skogestad, Sigurd

493

Comparison of Alternative Control Structures for an Ideal Two-Product Reactive Distillation Column  

E-Print Network (OSTI)

Comparison of Alternative Control Structures for an Ideal Two-Product Reactive Distillation Column distillation columns have been explored in many papers, very few papers have dealt with closed-loop control. Most of these control papers consider reactive distillation columns in which there is only one product

Al-Arfaj, Muhammad A.

494

Complex Distillation Arrangements 23.May 2001 by I.Halvorsen NTNU Department of Chemical Engineering  

E-Print Network (OSTI)

Complex Distillation Arrangements 23.May 2001 by I.Halvorsen NTNU Department of Chemical Engineering 1 Minimum Energy Requirements in Complex Distillation Arrangements A thesis submitted for the degree of dr. ing. 23. May 2001 by Ivar J. Halvorsen #12;Complex Distillation Arrangements 23.May 2001

Skogestad, Sigurd

495

Distillation Codes and Applications to DoS Resistant Multicast Authentication  

E-Print Network (OSTI)

Distillation Codes and Applications to DoS Resistant Multicast Authentication Chris Karlof UC We introduce distillation codes, a method for streaming and storing data. Like erasure codes, distillation codes allow information to be decoded from a sufficiently large quorum of symbols. In contrast

Perrig, Adrian

496

Assured Information Distillation in Social Sensing University of Illinois at Urbana-Champaign  

E-Print Network (OSTI)

Colloquium Assured Information Distillation in Social Sensing Dong Wang University of Illinois. This opens up unprecedented challenges and opportunities in social sensing, where the goal is to distill, social and physical networks. The talk will also introduce a new information distillation system we built

Garibaldi, Skip

497

Rejection and fate of trace organic compounds (TrOCs) during membrane distillation  

E-Print Network (OSTI)

Rejection and fate of trace organic compounds (TrOCs) during membrane distillation Kaushalya COCs) Direct contact membrane distillation (DCMD) Volatility Fate and transport Hydrophobicity/hydrophilicity a b s t r a c t In this study, we examined the feasibility of membrane distillation (MD) for removing

498

SEPARATION OF TERNARY HETEROAZEOTROPIC MIXTURES IN A CLOSED MULTIVESSEL BATCH DISTILLATION-DECANTER HYBRID  

E-Print Network (OSTI)

SEPARATION OF TERNARY HETEROAZEOTROPIC MIXTURES IN A CLOSED MULTIVESSEL BATCH DISTILLATION, Trondheim, Norway The feasibility of a novel multivessel batch distillation-decanter hybrid for simultaneous enables us to make direct use of the distillation line (or residue curve) map. Simple rules for predicting

Skogestad, Sigurd

499

On the Dynamics of Batch Distillation : A Study of Parametric Sensitivity in Ideal  

E-Print Network (OSTI)

On the Dynamics of Batch Distillation : A Study of Parametric Sensitivity in Ideal Binary Columns distillation processes. By considering the e ect of small changes in the operating parameters, e.g., initial-mail: jacobsen@elixir.e.kth.se 1 #12;1 Introduction Batch distillation has become of increasing importance

Skogestad, Sigurd

500

A globally convergent method for finding all steady-state solutions of distillation columns  

E-Print Network (OSTI)

A globally convergent method for finding all steady-state solutions of distillation columns Ali distillation column with 7 steady-states show the robustness of the method. No published software known to the steady-state model of distillation columns as it returns the original system as a single large block

Neumaier, Arnold