Bench-Scale Silicone Process for Low-Cost CO{sub 2} Capture

[摘要] A bench-scale system was designed and built to test an aminosilicone-based solvent. A model was built of the bench-scale system and this model was scaled up to model the performance of a carbon capture unit, using aminosilicones, for CO{sub 2} capture and sequestration (CCS) for a pulverized coal (PC) boiler at 550 MW. System and economic analysis for the carbon capture unit demonstrates that the aminosilicone solvent has significant advantages relative to a monoethanol amine (MEA)-based system. The CCS energy penalty for MEA is 35.9% and the energy penalty for aminosilicone solvent is 30.4% using a steam temperature of 395 ?��C (743 ?��F). If the steam temperature is lowered to 204 ?��C (400 ?��F), the energy penalty for the aminosilicone solvent is reduced to 29%. The increase in cost of electricity (COE) over the non-capture case for MEA is ~109% and increase in COE for aminosilicone solvent is ~98 to 103% depending on the solvent cost at a steam temperature of 395 ?��C (743 ?��F). If the steam temperature is lowered to 204 ?��C (400 ?��F), the increase in COE for the aminosilicone solvent is reduced to ~95-100%.

[发布日期] 2013-12-31