化学链高温空分制氧与热力发电系统集成性能评价  

Performance Evaluation of a Power Plant System Integrated with Chemical Looping Air Separation

作　　者：赵亚仙 谢文霞 张军[2] 解继红[1] 杜勇[1] 闫海仙[1] Zhao Yaxian;Xie Wenxia;Zhang Jun;Xie Jihong;Du Yong;Yan Haixian(School of Mechanical Engineering, Jinzhong University, Jinzhong 030600, Shanxi Province, China;School of Energy and Environment, Southeast University, Nanjing 210096, China)

机构地区：[1]晋中学院机械学院,山西晋中030600 [2]东南大学能源与环境学院,南京210096

出　　处：《发电设备》2018年第3期158-162,共5页Power Equipment

基　　金：国家重点基础研究发展计划项目(973计划)资助项目(2013CB228504);国家自然科学基金资助项目(51576043)

摘　　要：基于Aspen Plus软件,建立了化学链高温空分制氧与热力发电(CLAS-O_2/CO_2)系统的集成模型,将化学链高温空分制O_2和CO_2混合气体代替常规富氧燃烧热力发电(ASU-O_2/CO_2)系统低温空分制氧单元,建立O_2/CO_2循环燃烧模型,考察烟气抽气温度、过量空气系数和载氧体对系统性能的影响,得到系统最优参数。结果表明:CLAS-O_2/CO_2系统净效率为38.8%,比ASU-O_2/CO_2系统高13.5%,比带有CO_2捕集的整体煤气化联合循环发电(IGCC-CCS)系统高1.8%,且实现CO_2零排放。A model of power plant system integrated with chemical looping air separation（CLAS-O2/CO2）was established based on Aspen Plus software,while a model of O2/CO2 cyclic combustion was set up with the higher temperature separation unit for O2 and CO2 in chemical looping combustion to replace the lower temperature air separation unit in conventional oxy-fuel combustion power plant（ASU-O2/CO2）system,so as to study the effects of following factors on the performance of the system,such as the extracting temperature of flue gas,the excessive air ratio and the type of oxygen carrier,etc.,after which,optimal parameters of the CLAS-O2/CO2 system were obtained.Results show that the net efficiency of the CLAS-O2/CO2 system is 38.8%,which is 13.5% higher than the ASU-O2/CO2 system and 1.8% higher than the system of integrated gasification combined cycle with CO2 capture and storage（IGCC-CCS）,when zero emission of CO2 can be achieved simultaneously.

关 键 词：化学链燃烧 空分装置 富氧燃烧 载氧体 

分 类 号：TM611.3[电气工程—电力系统及自动化]