期刊名称：Bulletin of the Institute of Heat Engineering
印刷版ISSN：2083-4187
出版年度：2015
卷号：95
期号：3
页码：201-210
语种：English
出版社：Warsaw University of Technology
摘要：This paper presents the results of thermodynamic and economic analysis of a coal-fired combined heat and power plant (CHP) working at supercritical parameters, integrated with carbon dioxide capture installation based on membrane separation. Two configurations of the membrane systems are described, compared and optimized. Both of them consists of two-stage membrane installation, but in first variant (Case 1) no recirculation is performed and in the second one (Case 2), retentate from behind the second membrane is recirculated before first membrane. Economic analyses includes comparison of the systems with a unit working without CO 2 capture (reference unit). Main thermodynamic (annual generation of the products, efficiencies) and economic (break-even price of electricity, break-even price of membranes) indices are presented in this paper. The results show, that the profitability of the investment in CHP units integrated with CO 2 capture is strongly dependant on the annual operation time and price of emission allowances. Better thermodynamic and economic characteristics are obtained for the system with retentate recirculation than for the system without recirculation.
关键词：membrane CO2 separation;combined heat and power plant;thermodynamic and economic analysis
