中国电机工程学报
中國電機工程學報
중국전궤공정학보
ZHONGGUO DIANJI GONGCHENG XUEBAO
2013年
23期
51-59
,共9页
迟金玲%张士杰%王波%肖云汉
遲金玲%張士傑%王波%肖雲漢
지금령%장사걸%왕파%초운한
整体煤气化联合循环(IGCC)%输运床气化炉%空气气化%氧气气化%CO2 捕集
整體煤氣化聯閤循環(IGCC)%輸運床氣化爐%空氣氣化%氧氣氣化%CO2 捕集
정체매기화연합순배(IGCC)%수운상기화로%공기기화%양기기화%CO2 포집
integrated gasification combined cycle (IGCC)%transport gasifier%air-blown%oxygen-blown%CO2 capture
对整体煤气化联合循环(integrated gasification combined cycle，IGCC)电站而言，气化剂(氧气/空气)的选择对系统的流程配置、热力性能及经济性已产生较大的影响。在考虑 CO2捕集的情景下，研究不同捕集方法的引入对IGCC 带来的影响，具有重要的意义。该文分别构建了输运床氧气及空气气化IGCC系统流程，分析了MDEA及Selexol这2种不同捕集方法的引入对 IGCC 电站技术经济性的影响。结果表明，无论是氧气还是空气气化电站，都更适合于采用 Selexol 法捕集 CO2。然而 Selexol 法对空气气化电站供电效率的影响大于氧气气化电站。不捕集 CO2时，空气气化电站的供电效率比氧气气化电站高约0.46个百分点，而采用 Selexol 法捕集系统中90%的 CO2后，其供电效率则比氧气气化电站低约0.14个百分点。从经济性角度，空气气化电站具有优势，考虑 CO2捕集后，其发电成本仍比氧气气化电站低10￥/(MW?h)。
對整體煤氣化聯閤循環(integrated gasification combined cycle，IGCC)電站而言，氣化劑(氧氣/空氣)的選擇對繫統的流程配置、熱力性能及經濟性已產生較大的影響。在攷慮 CO2捕集的情景下，研究不同捕集方法的引入對IGCC 帶來的影響，具有重要的意義。該文分彆構建瞭輸運床氧氣及空氣氣化IGCC繫統流程，分析瞭MDEA及Selexol這2種不同捕集方法的引入對 IGCC 電站技術經濟性的影響。結果錶明，無論是氧氣還是空氣氣化電站，都更適閤于採用 Selexol 法捕集 CO2。然而 Selexol 法對空氣氣化電站供電效率的影響大于氧氣氣化電站。不捕集 CO2時，空氣氣化電站的供電效率比氧氣氣化電站高約0.46箇百分點，而採用 Selexol 法捕集繫統中90%的 CO2後，其供電效率則比氧氣氣化電站低約0.14箇百分點。從經濟性角度，空氣氣化電站具有優勢，攷慮 CO2捕集後，其髮電成本仍比氧氣氣化電站低10￥/(MW?h)。
대정체매기화연합순배(integrated gasification combined cycle，IGCC)전참이언，기화제(양기/공기)적선택대계통적류정배치、열력성능급경제성이산생교대적영향。재고필 CO2포집적정경하，연구불동포집방법적인입대IGCC 대래적영향，구유중요적의의。해문분별구건료수운상양기급공기기화IGCC계통류정，분석료MDEA급Selexol저2충불동포집방법적인입대 IGCC 전참기술경제성적영향。결과표명，무론시양기환시공기기화전참，도경괄합우채용 Selexol 법포집 CO2。연이 Selexol 법대공기기화전참공전효솔적영향대우양기기화전참。불포집 CO2시，공기기화전참적공전효솔비양기기화전참고약0.46개백분점，이채용 Selexol 법포집계통중90%적 CO2후，기공전효솔칙비양기기화전참저약0.14개백분점。종경제성각도，공기기화전참구유우세，고필 CO2포집후，기발전성본잉비양기기화전참저10￥/(MW?h)。
Coal can be gasified in oxygen-blown or air-blown operation of gasifiers, which will greatly affect the system configuration and techno-economic performance of integrated gasification combined cycle (IGCC) power plants. Other than that, the adoption of various CO2 capture technologies will bring new characteristics for IGCC, which is an attractive aspect to research into. Six IGCC power plants based on transport gasifierswere developed to investigate the relative costs and benefits of oxygen-blown or air-blown gasification and of MDEA or Selexol CO2 capture technologies. The results show that, between the two CO2 capture technologies, Selexol process is preferred for both oxygen-blown and air-blown plants. More energy penalty will be introduced by this method for the air-blown plant. The net efficiency of the air-blown plant is higher than that of the oxygen-blown plant by 0.46 percentage points without CO2 capture, but lower by 0.14 percentage points with 90% of CO2 being removed. However, the air-blown IGCC plant has obvious advantages in terms of cost. The generation cost the air-blown plant is higher than that of the oxygen-blown plant by about 10 Yuan/(MW?h) even if CO2 capture is considered.
