Key CO_(2)capture technology of pure oxygen exhaust gas combustion for syngas-fueled high-temperature fuel cells  

作　　者：Hanlin Wang Qilong Lei Pingping Li Changlei Liu Yunpeng Xue Xuewei Zhang Chufu Li Zhibin Yang 

机构地区：[1]National Institute of Clean and Low-Carbon Energy,Beijing 102211,China [2]Shenhua New Energy Company,Ltd.,Beijing 100007,China [3]China University of Mining and Technology,Beijing 100083,China

出　　处：《International Journal of Coal Science & Technology》2021年第3期383-393,共11页国际煤炭科学技术学报（英文）

基　　金：This work was supported by the National Key R&D Program of China(No.2017YFB0601900).

摘　　要：Integrated gasification fuel cells(IGFCs)integrating high-temperature solid oxide fuel cell technology with CO_(2)capture processes represents highly-efficient power systems with negligible CO_(2)emissions.Flame burning with pure oxygen is an ideal method for fuel cell exhaust gas treatment,and this report describes experimental and numerical studies regarding an oxy-combustor for treating the exhaust gas of a 10 kW IGFC system anode.The applied simulation method was verified based on experiments,and the key performance indices of the combustor were studied under various conditions.It was determined that 315 K was the ideal condensation temperature to obtain flame stability.Under these pure oxygen flame burning conditions,CO was almost completely converted,and the dry mole fraction of CO_(2)after burning was C 0.958 when there was up to 5%excess O_(2).Overall,5%excess O_(2)was recommended to maximize CO_(2)capture and promote other environmental considerations.Additionally,the optimal tangential fuel jet angle to control the liner temperature was approximately 25°.The total fuel utilization had to be high enough to maintain the oxygen flame temperature of the anode exhaust gas below 1800 K to ensure that the system was environmentally friendly.The results presented herein have great value for designing IGFCs coupled with CO_(2)capture systems.

关 键 词：Integrated gasification fuel cell system Solid oxide fuel cell Anode exhaust gas treatment CO_(2)capture OXY-COMBUSTION 

分 类 号：TM911.4[电气工程—电力电子与电力传动]