کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1735777 1016192 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characteristics and economic evaluation of a CO2-capturing repowering system with oxy-fuel combustion for utilizing exhaust gas of molten carbonate fuel cell (MCFC)
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
Characteristics and economic evaluation of a CO2-capturing repowering system with oxy-fuel combustion for utilizing exhaust gas of molten carbonate fuel cell (MCFC)
چکیده انگلیسی

A scale of 2.4 MW molten carbonate fuel cell (MCFC) was taken to construct a high-efficiency and economic power generation system without CO2 emission for utilizing its exhaust gas. A conventional steam turbine power generation system (STPS) is evaluated and the net generated power (NGP) is estimated to be only 131 kW and the STPS is not economically feasible. A CO2-caputuring repowering system is proposed, where low temperature steam produced at heat recovery steam generator (HRSG) by using the MCFC exhaust gas is utilized as a main working fluid of a gas turbine, and the temperature of the steam is raised by combusting fuel in a combustor by using pure oxygen, not the air. It is estimated that NGP of the proposed system is 253 kW, and CO2 reduction amount is 583 t-CO2/y, compared to 302 t-CO2/y for the STPS and that the proposed system becomes economically feasible if a CO2 emission credit higher than 20 $/t-CO2 can be granted. It is also estimated, when its turbine inlet temperature is increased from 850 °C to 1000 °C, CO2-capturing is not cost-consuming but becomes to be profitable, owing to improved power generation characteristics.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 34, Issue 11, November 2009, Pages 1903–1909
نویسندگان
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