skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Solid sorbents for CO2 capture from post-combustion and pre-combustion gas streams

Abstract

Combustion of fossil fuels is one of the major sources of the greenhouse gas CO2. Pressure swing adsorption/sorption (PSA/PSS) and temperature swing adsorption/sorption (TSA/TSS) are some of the potential techniques that could be utilized for removal of CO2 from fuel gas streams. NETL researchers have developed novel CO2 capture sorbents for both low and moderate temperature applications. A novel liquid impregnated solid sorbent was developed for CO2 removal in the temperature range of ambient to 60 °C, which is regenerable at 60-80 °C, and is suitable for various reactor configurations. Multi-cycle tests conducted in an atmospheric bench scale reactor with simulated moist flue gas indicated that the sorbent retains its CO2 sorption capacity with CO2 removal efficiency of about 99%. The sorbent was also tested in a high pressure (20 atm) bench scale flow reactor with simulated coal gas. The CO2 sorption capacity at high pressure was higher than that at atmospheric pressure. It was possible to regenerate the sorbent at 20 atm in the presence of water vapor. A novel, regenerable solid sorbent containing mixture of alkali earth and alkali compounds was also developed for CO2 removal at 200-315 °C from high pressure gas streams suitable for IGCC systems.more » The sorbent showed very high capacity for CO2 removal from a gas streams containing 28% CO2 at 200 °C and at 20 atm during a lab scale reactor test. Results of the multi-cycle test with the sorbent and potential applications will also be discussed.« less

Authors:
;
Publication Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, and Morgantown, WV
Sponsoring Org.:
USDOE - Office of Fossil Energy (FE)
OSTI Identifier:
913331
Report Number(s):
DOE/NETL-IR-2007-105
TRN: US200802%%775
DOE Contract Number:
None cited
Resource Type:
Conference
Resource Relation:
Conference: ACS 233rd National Meeting, Chicago, IL, Mar. 25-29, 2007
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; ATMOSPHERIC PRESSURE; CAPACITY; COAL GAS; COMBUSTION; EFFICIENCY; FLUE GAS; FOSSIL FUELS; FUEL GAS; GREENHOUSE GASES; MIXTURES; REMOVAL; SORPTION; WATER VAPOR; greenhouse gases; carbon dioxide capture; CO2 sorption; alkali

Citation Formats

Siriwardane, R.V., and Robinson, C. Stevens, R.W., Jr.. Solid sorbents for CO2 capture from post-combustion and pre-combustion gas streams. United States: N. p., 2007. Web.
Siriwardane, R.V., & Robinson, C. Stevens, R.W., Jr.. Solid sorbents for CO2 capture from post-combustion and pre-combustion gas streams. United States.
Siriwardane, R.V., and Robinson, C. Stevens, R.W., Jr.. Thu . "Solid sorbents for CO2 capture from post-combustion and pre-combustion gas streams". United States. doi:.
@article{osti_913331,
title = {Solid sorbents for CO2 capture from post-combustion and pre-combustion gas streams},
author = {Siriwardane, R.V. and Robinson, C. Stevens, R.W., Jr.},
abstractNote = {Combustion of fossil fuels is one of the major sources of the greenhouse gas CO2. Pressure swing adsorption/sorption (PSA/PSS) and temperature swing adsorption/sorption (TSA/TSS) are some of the potential techniques that could be utilized for removal of CO2 from fuel gas streams. NETL researchers have developed novel CO2 capture sorbents for both low and moderate temperature applications. A novel liquid impregnated solid sorbent was developed for CO2 removal in the temperature range of ambient to 60 °C, which is regenerable at 60-80 °C, and is suitable for various reactor configurations. Multi-cycle tests conducted in an atmospheric bench scale reactor with simulated moist flue gas indicated that the sorbent retains its CO2 sorption capacity with CO2 removal efficiency of about 99%. The sorbent was also tested in a high pressure (20 atm) bench scale flow reactor with simulated coal gas. The CO2 sorption capacity at high pressure was higher than that at atmospheric pressure. It was possible to regenerate the sorbent at 20 atm in the presence of water vapor. A novel, regenerable solid sorbent containing mixture of alkali earth and alkali compounds was also developed for CO2 removal at 200-315 °C from high pressure gas streams suitable for IGCC systems. The sorbent showed very high capacity for CO2 removal from a gas streams containing 28% CO2 at 200 °C and at 20 atm during a lab scale reactor test. Results of the multi-cycle test with the sorbent and potential applications will also be discussed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2007},
month = {Thu Mar 01 00:00:00 EST 2007}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • A novel liquid impregnated solid sorbent was developed for CO2 removal in the temperature range of ambient to 60 °C for both fixed bed and fluidized bed reactor applications. The sorbent is regenerable at 60-80 °C. Multi-cycle tests conducted in an atmospheric bench scale reactor with simulated flue gas demonstrated that the sorbent retains its CO2 sorption capacity with CO2 removal efficiency of about 99%. A second, novel solid sorbent containing mixture of alkali earth and alkali compounds was developed for CO2 removal at 200-315 °C from high pressure gas streams (i.e., suitable for IGCC systems). The sorbent showed verymore » high capacity for CO2 removal from gas streams containing 28% CO2 at 200 °C and 11.2 atm during lab-scale flow reactor tests as well as regenerability at 375 °C.« less
  • Combustion of fossil fuels is one of the major sources of the greenhouse gas CO2. Pressure swing adsorption/sorption (PSA/PSS) and temperature swing adsorption/sorption (TSA/TSS) are some of the potential techniques that could be utilized for removal of CO2 from fuel gas streams. It is very important to develop sorbents to remove CO2 from fuel gas streams that are applicable for a wide range of temperatures. NETL researchers have developed novel CO2 capture sorbents for low, moderate, and high temperature applications. A novel liquid impregnated solid sorbent was developed for CO2 removal in the temperature range of ambient to 60 °C.more » The sorbent is regenerable at 60 – 80 °C. The sorbent formulations were prepared to be suitable for various reactor configurations (i.e., fixed and fluidized bed). Minimum fluidization gas velocities were also determined. Multi-cycle tests conducted in an atmospheric bench scale reactor with simulated flue gas indicated that the sorbent retains its CO2 sorption capacity with a CO2 removal efficiency of approximately 99% and was unaffected by presence of water vapor. The sorbent was subsequently commercially prepared by Süd Chemie to determine the viability of the sorbent for mass production. Subsequent testing showed that the commercially-synthesized sorbent possesses the same properties as the lab-synthesized equivalent. An innovative solid sorbent containing mixture of alkali earth and alkali compounds was developed for CO2 removal at 200 – 315°C from high pressure gas streams suitable for IGCC systems. The sorbent showed very high capacity for CO2 removal from a gas streams containing 28% CO2 at 200 °C and at 20 atm during a lab scale reactor test. This sorbent can be regenerated at 20 atm and at 375 °C utilizing a gas stream containing steam. High pressure enhanced the CO2 sorption process. Bench scale testing showed consistent capacities and regenerability. A unique high temperature solid sorbent was developed for CO2 capture at temperatures of 500 – 700°C. Bench scale testing of the sorbent yielded very high CO2 capture capacity from a gas stream containing 10% CO2, 30% H2, 15% H2O, and 25% He. Regeneration of the sorbent is possible at 800 – 900 °C.« less
  • Combustion of fossil fuels is one of the major sources of the greenhouse gas CO2. Pressure swing adsorption/sorption (PSA/PSS) and temperature swing adsorption/sorption (TSA/TSS) are some of the potential techniques that could be utilized for removal of CO2 from fuel gas streams. It is very important to develop sorbents to remove CO2 from fuel gas streams that are applicable for a wide range of temperatures. NETL researchers have developed novel CO2 capture sorbents for low, moderate, and high temperature applications. A novel liquid impregnated solid sorbent was developed for CO2 removal in the temperature range of ambient to 60 °C.more » The sorbent is regenerable at 60 – 80 °C. The sorbent formulations were prepared to be suitable for various reactor configurations (i.e., fixed and fluidized bed). Minimum fluidization gas velocities were also determined. Multi-cycle tests conducted in an atmospheric bench scale reactor with simulated flue gas indicated that the sorbent retains its CO2 sorption capacity with a CO2 removal efficiency of approximately 99% and was unaffected by presence of water vapor. The sorbent was subsequently commercially prepared by Süd Chemie to determine the viability of the sorbent for mass production. Subsequent testing showed that the commercially-synthesized sorbent possesses the same properties as the lab-synthesized equivalent. An innovative solid sorbent containing mixture of alkali earth and alkali compounds was developed for CO2 removal at 200 – 315°C from high pressure gas streams suitable for IGCC systems. The sorbent showed very high capacity for CO2 removal from a gas streams containing 28% CO2 at 200 °C and at 20 atm during a lab scale reactor test. This sorbent can be regenerated at 20 atm and at 375 °C utilizing a gas stream containing steam. High pressure enhanced the CO2 sorption process. Bench scale testing showed consistent capacities and regenerability. A unique high temperature solid sorbent was developed for CO2 capture at temperatures of 500 – 700°C. Bench scale testing of the sorbent yielded very high CO2 capture capacity from a gas stream containing 10% CO2, 30% H2, 15% H2O, and 25% He. Regeneration of the sorbent is possible at 800 – 900 °C.« less
  • A novel liquid-impregnated clay sorbent R. V. Siriwardane, U.S. Patent No. 6,908,497 B1 2003 was developed for carbon dioxide CO2 removal in the temperature range of ambient to 60°C for both fixed-bed and fluidized-bed reactor applications. The sorbent is regenerable at 80–100°C. A 20-cycle test conducted in an atmospheric reactor with simulated flue gas with moisture demonstrated that the sorbent retains its CO2 sorption capacity with CO2 removal efficiency of about 99% during the cyclic tests. The sorbents suitable for fluidized-bed reactor operations showed required delta CO2 capacity requirements for sorption of CO2 at 40°C and regeneration at 100°C. Themore » parameters such as rate of sorption, heat of sorption, minimum fluidization velocities, and attrition resistance data that are necessary for the design of a reactor suitable for capture and regeneration were also determined for the sorbent. A 20-cycle test conducted in the presence of flue-gas pollutant sulfur dioxide—SO2 20 parts per million —indicated that the sorbent performance was not affected by the presence of SO2.« less