摘要
分别对IGCC系统、IGCC燃烧前捕捉CO2系统以及CO2循环利用的纯氧燃烧系统的产气率和能耗进行了计算.结果表明,当煤种和气化条件不变时,燃烧前捕捉CO2会使IGCC系统的燃气轮机和蒸汽轮机做功量减少,热效率降低5.851%.当减排86.55%的CO2时,系统热效率为42%,有利于IGCC清洁高效运行.若采用CO2循环的纯氧燃烧技术,其系统热效率比未循环CO2的燃烧前捕捉系统低,但可以实现CO2的零排放.
Gas producing ratio and energy consumption rate were computed respectively in the IGCC system, the IGCC system with pre-combustion CO2 capturing and that with oxy- combustion CO2 recycling. It was showed from the computed results that when coal and the gasi- fication were in the same condition, the steam and gas turbine＇s work declined and the IGCC sys- tem thermal efficiency reduced by 5. 851%, which was due to the capturing of CO2 gas. When CO2reduction rate was 86.55%, the thermal efficiency was 42% and conducive to the operating of IGCC efficiently and cleanly. If adopting the CO2 recycling combustion technology, the system thermal efficiency was lower than that of the pre-combustion CO2 capturing system, but in which zero CO2 emission could be achieved.
出处
《煤炭转化》
CAS
CSCD
北大核心
2012年第4期80-83,共4页
Coal Conversion
基金
国家高技术研究发展计划(863)项目(2009AA05Z216)
关键词
IGCC
CO2减排
系统热效率
IGCC, CO2 emission reduction, system thermal efficiency
