Improved pressure swing adsorption processes for gas separation: By heat exchange between adsorbers and by high-heat-capacity inert additives

doi:https://doi.org/10.1021/i200032a009

Title: Improved pressure swing adsorption processes for gas separation: By heat exchange between adsorbers and by high-heat-capacity inert additives

Full Record
Other Related Research

Abstract

Two new pressure swing adsorption processes for bulk gas separation are proposed. The first one is by allowing heat exchange between the adsorber columns, for example, by using a shell-and-tube type heat exchanger, where the shell and the tube are two beds. By model simulations, it is shown that the new process offers substantial improvements in both product purities and recoveries over the adiabatic process, which resembles the industrial operations using large beds. A fundamental understanding for the improvements is given through model simulations. A peculiar high-temperature plateau and cold ends in the bed are predicted for the adiabatic process. In the second process, an inert material with a high heat capacity is added into the adsorbent bed. The inert additive serves to store heat during adsorption and release it during desorption, hence reducing the magnitudes of the temperature excursions during pressure swing cycle and improving the separations. Model simulation results are presented for bulk separation of H/sub 2//CH/sub 4/ and H/sub 2//CO mixtures with various amounts of iron particles added in a bed of activated carbon. The results show substantial improvements in both product purities and recoveries by the inert additive. A fundamental understanding of the role played bymore »« less

Authors:: Yang, R T; Cen, P L

Publication Date:: 1986-01-01

Research Org.:: Dept. of Chemical Eng., State Univ. of New York at Buffalo, Buffalo, NY 14260

OSTI Identifier:: 5770081

Resource Type:: Journal Article

Journal Name:: Ind. Eng. Chem. Process Des. Dev.; (United States)

Additional Journal Information:: Journal Volume: 25:1

Country of Publication:: United States

Language:: English

Subject:: 03 NATURAL GAS; ACTIVATED CARBON; SORPTIVE PROPERTIES; CARBON MONOXIDE; SEPARATION PROCESSES; HYDROGEN; METHANE; ADSORPTION; ADDITIVES; ADIABATIC PROCESSES; HEAT TRANSFER; HYDRIDES; IMPURITIES; IRON; MATHEMATICAL MODELS; MIXTURES; PRESSURE EFFECTS; SPECIFIC HEAT; STEADY-STATE CONDITIONS; TEMPERATURE GRADIENTS; ADSORBENTS; ALKANES; CARBON; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; DISPERSIONS; ELEMENTS; ENERGY TRANSFER; HYDROCARBONS; HYDROGEN COMPOUNDS; METALS; NONMETALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SORPTION; SURFACE PROPERTIES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENTS; 030300* - Natural Gas- Drilling, Production, & Processing

Citation Formats


                    Yang, R T, and Cen, P L. Improved pressure swing adsorption processes for gas separation: By heat exchange between adsorbers and by high-heat-capacity inert additives.  United States: N. p., 1986. 
        Web.  doi:10.1021/i200032a009.

Copy to clipboard


                    Yang, R T, & Cen, P L. Improved pressure swing adsorption processes for gas separation: By heat exchange between adsorbers and by high-heat-capacity inert additives.  United States.  https://doi.org/10.1021/i200032a009

Copy to clipboard


                    Yang, R T, and Cen, P L. Wed .  
        "Improved pressure swing adsorption processes for gas separation: By heat exchange between adsorbers and by high-heat-capacity inert additives".  United States.  https://doi.org/10.1021/i200032a009.

Copy to clipboard


                    
@article{osti_5770081,

  title        = {Improved pressure swing adsorption processes for gas separation: By heat exchange between adsorbers and by high-heat-capacity inert additives},

  author       = {Yang, R T and Cen, P L},

  abstractNote = {Two new pressure swing adsorption processes for bulk gas separation are proposed. The first one is by allowing heat exchange between the adsorber columns, for example, by using a shell-and-tube type heat exchanger, where the shell and the tube are two beds. By model simulations, it is shown that the new process offers substantial improvements in both product purities and recoveries over the adiabatic process, which resembles the industrial operations using large beds. A fundamental understanding for the improvements is given through model simulations. A peculiar high-temperature plateau and cold ends in the bed are predicted for the adiabatic process. In the second process, an inert material with a high heat capacity is added into the adsorbent bed. The inert additive serves to store heat during adsorption and release it during desorption, hence reducing the magnitudes of the temperature excursions during pressure swing cycle and improving the separations. Model simulation results are presented for bulk separation of H/sub 2//CH/sub 4/ and H/sub 2//CO mixtures with various amounts of iron particles added in a bed of activated carbon. The results show substantial improvements in both product purities and recoveries by the inert additive. A fundamental understanding of the role played by the inert additive is gained through a comparison of the temperature profiles in the bed and its variation with time during a steady-state cycle.},

  doi          = {10.1021/i200032a009},

  url          = {https://www.osti.gov/biblio/5770081},
  journal      = {Ind. Eng. Chem. Process Des. Dev.; (United States)},
number       = ,

  volume       = 25:1,

  place        = {United States},

  year         = {1986},

  month        = {1}

}

Copy to clipboard

Journal Article:

https://doi.org/10.1021/i200032a009

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Comparison of activated carbon and zeolite 13X for CO[sub 2] recovery from flue gas by pressure swing adsorption

Journal Article Chue, K T ; Kim, J N ; Yoo, Y J ; ... - Industrial and Engineering Chemistry Research; (United States)

For the recovery of high purity CO[sub 2], two adsorbents, zeolite 13X and activated carbon, are examined. Pressure swing adsorption (PSA) cycle simulations are performed to compare the performance of different adsorbents in separation from two feed mixtures: 16/84 (v/v) CO[sub 2]/N[sub 2] and 26/74 CO[sub 2]/N[sub 2]. Despite high-temperature excursions in the adsorption step, zeolite 13X is a better adsorbent than activated carbon in nonisothermal, adiabatic PSA process due to favorable isotherm shape and equilibrium selectivity. Moreover, a higher temperature excursion for 13X during the product (CO[sub 2]) purge step reduces the purge gas amount and this actually helpsmore »« less
https://doi.org/10.1021/ie00041a020
Separation of hydrogen mixtures by a two-bed pressure swing adsorption process using zeolite 5A

Journal Article Yang, J ; Lee, C H ; Chang, J W - Industrial and Engineering Chemistry Research

A study on a two-bed six-step pressure swing adsorption (PSA) process using zeolite 5A was performed experimentally and theoretically for bulk separation of H{sub 2}/CO and H{sub 2}/CH{sub 4} systems (70/30 vol %) as major components in coke oven gas. When the pressure is cycled between 1 and 11 atm at ambient temperatures, 70% H{sub 2} in the feed could be concentrated to 99.99% in the product with a recovery of 75.87% in the H{sub 2}/CO mixture and 80.38% in the H{sub 2}/CH{sub 4} mixture. The effects of adsorption pressure, P/F ratio, adsorption/purge step time, and pressure equalization step timemore »« less
https://doi.org/10.1021/ie960728h
Upgrading Methane Using Ultra-Fast Thermal Swing Adsorption

Technical Report Tonkovich, Anna Lee

The purpose of this project is to design and demonstrate an approach to upgrade low-BTU methane streams from coal mines to pipeline-quality natural gas. The objective of Phase I of the project was to assess the technical feasibility and cost of upgrading low-BTU methane streams using ultra-fast thermal swing adsorption (TSA) using Velocys modular microchannel process technology. The objective of Phase II is to demonstrate the process at the bench-scale. Natural gas upgrading systems have six main unit operations: feed compressor, dehydration unit, nitrogen rejection unit, deoxygenator, carbon dioxide scrubber, and a sales compressor. The NRU is the focus ofmore »« less
https://doi.org/10.2172/883157

Full Text Available
Optimal synthesis of a pressure swing adsorption process for CO2 capture

Conference Agarwal, A ; Biegler, L ; Zitney, S

The emission of carbon dioxide from cement industry and power plants that burn fossil fuels is the major cause for the accumulation of CO2 in the atmosphere, which causes long-range environmental problems. One option to mitigate the emission of CO2 is to capture it from the emission sources and store it to the ocean or depleted oil field or use it for enhanced oil recovery. CO2 recovery has been achieved by gas absorption employing solutions of carbonates and alkanolamines. However, this process is energy-intensive for the regeneration of solvent and also faces problems due to corrosion. Recently, the pressure swingmore »« less
A HIGH EFFICIENCY, ULTRA-COMPACT PROCESS FOR PRE-COMBUSTION CO ₂ CAPTURE

Technical Report Tsotsis, Theodore T

The key objective of this lab-scale study was to prove the technical feasibility of the membrane- and adsorption-enhanced water gas shift (WGS) reaction process that employs a carbon molecular sieve (CMS) membrane reactor (MR) followed by an adsorption reactor (AR) for pre-combustion carbon dioxide (CO ₂) capture, while demonstrating progress towards achievement of the overall fossil energy performance goals of 90% CO ₂ capture rate with 95% CO ₂ purity, at a cost of electricity of 30% less than the baseline capture approaches. Such a WGS system combining a MR and an AR in tandem can produce an ultra-pure hydrogenmore »« less
https://doi.org/10.2172/1526847

Full Text Available

Similar Records