期刊
JOURNAL OF MEMBRANE SCIENCE
卷 488, 期 -, 页码 56-66出版社
ELSEVIER
DOI: 10.1016/j.memsci.2015.04.007
关键词
CO2-selective membrane; Permeance; Selectivity; IGCC; Pre-combustion carbon capture
资金
- Department of Energy/National Energy Technology Laboratory [FE0007632]
- Office of Naval Research/DJW Technology [N00014-14-C-098]
- National Science Foundation [CBET 1033131, IIP 1127812]
- Ohio Development Services Agency [OOE-CDO-D-13-05]
- Department of Energy [DE-FE0007632]
In recent years, integrated gasification combined cycle (IGCC) technology has gained significant attention for large-scale power generation with carbon capture. In an IGCC power plant, the syngas is typically directed to the gas turbine (for power generation) after CO2 and H2S removal. This work describes the transport properties of the CO2-selective polymeric facilitated transport membranes for syngas purification at different pressures (2-15 bar) and 107 degrees C. These membranes contain amines as CO2-carriers that are dispersed in a crosslinketl polyvinylalcohol (PVA) matrix. Furthermore, a two-stage membrane process is proposed for CO2 removal from syngas in an IGCC plant. A process modeling and cost-sensitivity analysis of the proposed two-stage membrane process was performed. The effects of feed pressure, temperature, membrane permeance, and selectivity on the overall increase in the cost of electricity (COE) were analyzed. An increase in the COE of 14-18% was estimated for 90% CO2 removal and > 99% H-2 recovery using the two-stage membrane process in an IGCC power plant. (C) 2015 Elsevier B.V. All rights reserved
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