January, 2009
Reduction in the cost of pre-combustion CO2 capture through advancements in sorption-enhanced water-gas-shift
Andrew Wright, Vince White, Jeffrey Hufton, Edward van Selow, Peter Hinderink
Sorption-enhanced water-gas-shift (SEWGS) is a pre-combustion decarbonisation technology combining adsorption of CO2 with the water-gas-shift reaction. This process maximises the production of hydrogen from syngas whilst simultaneously capturing and separating CO2. Simulations have been completed to evaluate the use of SEWGS for power generation from natural gas with carbon capture. The modelling results show that using the SEWGS process could significantly reduce the cost of capturing CO2 versus a reference design that uses amine absorption. Work has also been completed to show that using a counter-current steam-rinse step may be an improvement over a co-current CO2-rinse cycle proposed previously.
© 2008 Air Products and Chemicals, Inc. All rights reserved.
Keywords: Sorption Enhanced Water Gas Shift; SEWGS; Hydrotalcite; Pressure Swing Adsorption.
Source: Greenhouse Gas Control Technologies (GHGT) conference, 16-20 November 2008
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