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Title: CO 2 capture from IGCC gas streams using the AC-ABC process

Abstract

The objective of this project was to develop a novel, low-cost CO 2 capture process from pre-combustion gas streams. The bench-scale work was conducted at the SRI International. A 0.15-MWe integrated pilot plant was constructed and operated for over 700 hours at the National Carbon Capture Center, Wilsonville, AL. The AC-ABC (ammonium carbonate-ammonium bicarbonate) process for capture of CO 2 and H 2S from the pre-combustion gas stream offers many advantages over Selexol-based technology. The process relies on the simple chemistry of the NH 3-CO 2-H 2O-H 2S system and on the ability of the aqueous ammoniated solution to absorb CO 2 at near ambient temperatures and to release it as a high-purity, high-pressure gas at a moderately elevated regeneration temperature. It is estimated the increase in cost of electricity (COE) with the AC-ABC process will be ~ 30%, and the cost of CO 2 captured is projected to be less than $27/metric ton of CO 2 while meeting 90% CO 2 capture goal. The Bechtel Pressure Swing Claus (BPSC) is a complementary technology offered by Bechtel Hydrocarbon Technology Solutions, Inc. BPSC is a high-pressure, sub-dew-point Claus process that allows for nearly complete removal of H 2S from a gasmore » stream. It operates at gasifier pressures and moderate temperatures and does not affect CO 2 content. When coupled with AC-ABC, the combined technologies allow a nearly pure CO 2 stream to be captured at high pressure, something which Selexol and other solvent-based technologies cannot achieve.« less

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. SRI International, Menlo Park, CA (United States)
Publication Date:
Research Org.:
SRI International, Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
Contributing Org.:
Bechtel Hydrocarbon Technology Solutions, Inc.; EIG Inc., National Carbon Capture Center
OSTI Identifier:
1344095
Report Number(s):
DOE-SR-00896
DOE Contract Number:  
FE0000896
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; 20 FOSSIL-FUELED POWER PLANTS; Syngas; CO2 Capture; IGCC; Pre combustion; H2S capture

Citation Formats

Nagar, Anoop, McLaughlin, Elisabeth, Hornbostel, Marc, Krishnan, Gopala, and Jayaweera, Indira. CO2 capture from IGCC gas streams using the AC-ABC process. United States: N. p., 2017. Web. doi:10.2172/1344095.
Nagar, Anoop, McLaughlin, Elisabeth, Hornbostel, Marc, Krishnan, Gopala, & Jayaweera, Indira. CO2 capture from IGCC gas streams using the AC-ABC process. United States. doi:10.2172/1344095.
Nagar, Anoop, McLaughlin, Elisabeth, Hornbostel, Marc, Krishnan, Gopala, and Jayaweera, Indira. Thu . "CO2 capture from IGCC gas streams using the AC-ABC process". United States. doi:10.2172/1344095. https://www.osti.gov/servlets/purl/1344095.
@article{osti_1344095,
title = {CO2 capture from IGCC gas streams using the AC-ABC process},
author = {Nagar, Anoop and McLaughlin, Elisabeth and Hornbostel, Marc and Krishnan, Gopala and Jayaweera, Indira},
abstractNote = {The objective of this project was to develop a novel, low-cost CO2 capture process from pre-combustion gas streams. The bench-scale work was conducted at the SRI International. A 0.15-MWe integrated pilot plant was constructed and operated for over 700 hours at the National Carbon Capture Center, Wilsonville, AL. The AC-ABC (ammonium carbonate-ammonium bicarbonate) process for capture of CO2 and H2S from the pre-combustion gas stream offers many advantages over Selexol-based technology. The process relies on the simple chemistry of the NH3-CO2-H2O-H2S system and on the ability of the aqueous ammoniated solution to absorb CO2 at near ambient temperatures and to release it as a high-purity, high-pressure gas at a moderately elevated regeneration temperature. It is estimated the increase in cost of electricity (COE) with the AC-ABC process will be ~ 30%, and the cost of CO2 captured is projected to be less than $27/metric ton of CO2 while meeting 90% CO2 capture goal. The Bechtel Pressure Swing Claus (BPSC) is a complementary technology offered by Bechtel Hydrocarbon Technology Solutions, Inc. BPSC is a high-pressure, sub-dew-point Claus process that allows for nearly complete removal of H2S from a gas stream. It operates at gasifier pressures and moderate temperatures and does not affect CO2 content. When coupled with AC-ABC, the combined technologies allow a nearly pure CO2 stream to be captured at high pressure, something which Selexol and other solvent-based technologies cannot achieve.},
doi = {10.2172/1344095},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Feb 16 00:00:00 EST 2017},
month = {Thu Feb 16 00:00:00 EST 2017}
}

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