Decaking of coal or oil shale during pyrolysis in the presence of iron oxides

Title: Decaking of coal or oil shale during pyrolysis in the presence of iron oxides

Full Record
Other Related Research

Abstract

A method for producing a fuel from the pyrolysis of coal or oil shale in the presence of iron oxide in an inert gas atmosphere. The method includes the steps of pulverizing feed coal or oil shale, pulverizing iron oxide, mixing the pulverized feed and iron oxide, and heating the mixture in a gas atmosphere which is substantially inert to the mixture so as to form a product fuel, which may be gaseous, liquid and/or solid. The method of the invention reduces the swelling of coals, such as bituminous coal and the like, which are otherwise known to swell during pyrolysis.

Inventors:

Khan, M Rashid ^[1]

Morgantown, WV

Issue Date:: 1989-01-01

Research Org.:: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)

OSTI Identifier:: 867208

Patent Number(s):: 4886521

Assignee:: U.S. Department of Energy (Washington, DC)

Patent Classifications (CPCs):: C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10L - FUELS NOT OTHERWISE PROVIDED FOR

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10B - DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS

Show more

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10L - FUELS NOT OTHERWISE PROVIDED FOR
C10L9/10 - by using additives

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10B - DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
C10B57/04 - using charges of special composition

Show less

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: decaking; coal; oil; shale; pyrolysis; presence; iron; oxides; method; producing; fuel; oxide; inert; gas; atmosphere; steps; pulverizing; feed; mixing; pulverized; heating; mixture; substantially; form; product; gaseous; liquid; solid; reduces; swelling; coals; bituminous; otherwise; swell; substantially inert; oil shale; inert gas; iron oxide; gas atmosphere; feed coal; iron oxides; pulverized feed; bituminous coal; /44/201/208/

Citation Formats


                    Khan, M Rashid. Decaking of coal or oil shale during pyrolysis in the presence of iron oxides.  United States: N. p., 1989. 
        Web.

Copy to clipboard


                    Khan, M Rashid. Decaking of coal or oil shale during pyrolysis in the presence of iron oxides.  United States.

Copy to clipboard


                    Khan, M Rashid. Sun .  
        "Decaking of coal or oil shale during pyrolysis in the presence of iron oxides".  United States.  https://www.osti.gov/servlets/purl/867208.

Copy to clipboard


                    
@article{osti_867208,

  title        = {Decaking of coal or oil shale during pyrolysis in the presence of iron oxides},

  author       = {Khan, M Rashid},

  abstractNote = {A method for producing a fuel from the pyrolysis of coal or oil shale in the presence of iron oxide in an inert gas atmosphere. The method includes the steps of pulverizing feed coal or oil shale, pulverizing iron oxide, mixing the pulverized feed and iron oxide, and heating the mixture in a gas atmosphere which is substantially inert to the mixture so as to form a product fuel, which may be gaseous, liquid and/or solid. The method of the invention reduces the swelling of coals, such as bituminous coal and the like, which are otherwise known to swell during pyrolysis.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1989},

  month        = {1}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

Low temperature pyrolysis of coal or oil shale in the presence of calcium compounds

Patent Khan, M R

A coal pyrolysis technique or process is described in which particulate coal is pyrolyzed in the presence of about 5 to 21 wt % of a calcium compound selected from calcium oxide, calcined (hydrate) dolomite, or calcined calcium hydrate to produce a high quality hydrocarbon liquid and a combustible product gas which are characterized by low sulfur content. The pyrolysis is achieved by heating the coal-calcium compound mixture at a relatively slow rate at a temperature of about 450 to 700/sup 0/C over a duration of about 10 to 60 minutes in a fixed or moving bed reactor. The gasmore »« less
Full Text Available
Methods for minimizing plastic flow of oil shale during in situ retorting

Patent Lewis, Arthur E [Los Altos, CA]; Mallon, Richard G [Livermore, CA]

In an in situ oil shale retorting process, plastic flow of hot rubblized oil shale is minimized by injecting carbon dioxide and water into spent shale above the retorting zone. These gases react chemically with the mineral constituents of the spent shale to form a cement-like material which binds the individual shale particles together and bonds the consolidated mass to the wall of the retort. This relieves the weight burden borne by the hot shale below the retorting zone and thereby minimizes plastic flow in the hot shale. At least a portion of the required carbon dioxide and water canmore » be supplied by recycled product gases.« less
Full Text Available
Recovery of iron oxide from coal fly ash

Patent Dobbins, Michael S [Ames, IA]; Murtha, Marlyn J [Ames, IA]

A high quality iron oxide concentrate, suitable as a feed for blast and electric reduction furnaces is recovered from pulverized coal fly ash. The magnetic portion of the fly ash is separated and treated with a hot strong alkali solution which dissolves most of the silica and alumina in the fly ash, leaving a solid residue and forming a precipitate which is an acid soluble salt of aluminosilicate hydrate. The residue and precipitate are then treated with a strong mineral acid to dissolve the precipitate leaving a solid residue containing at least 90 weight percent iron oxide.
Full Text Available
Processes for washing a spent ion exchange bed and for treating biomass-derived pyrolysis oil, and apparatuses for treating biomass-derived pyrolysis oil

Patent Baird, Lance Awender; Brandvold, Timothy A.

Processes and apparatuses for washing a spent ion exchange bed and for treating biomass-derived pyrolysis oil are provided herein. An exemplary process for washing a spent ion exchange bed employed in purification of biomass-derived pyrolysis oil includes the step of providing a ion-depleted pyrolysis oil stream having an original oxygen content. The ion-depleted pyrolysis oil stream is partially hydrotreated to reduce the oxygen content thereof, thereby producing a partially hydrotreated pyrolysis oil stream having a residual oxygen content that is less than the original oxygen content. At least a portion of the partially hydrotreated pyrolysis oil stream is passed throughmore »« less
Full Text Available
Oil production by entrained pyrolysis of biomass and processing of oil and char

Patent Knight, James A [Atlanta, GA]; Gorton, Charles W [Atlanta, GA]

Entrained pyrolysis of lignocellulosic material proceeds from a controlled pyrolysis-initiating temperature to completion of an oxygen free environment at atmospheric pressure and controlled residence time to provide a high yield recovery of pyrolysis oil together with char and non-condensable, combustible gases. The residence time is a function of gas flow rate and the initiating temperature is likewise a function of the gas flow rate, varying therewith. A controlled initiating temperature range of about 400.degree. C. to 550.degree. C. with corresponding gas flow rates to maximize oil yield is disclosed.
Full Text Available

Similar Records