甲烷化学链重整制合成气用氧载体的研究进展  

Research progress in oxygen carriers for syngas production via chemical looping reforming of methane

作　　者：靳南南 张立 朱燕燕[1] 刘瑞林 马晓迅[1] 王晓东[2] JIN Nan-nan;ZHANG Li;ZHU Yan-yan;LIU Rui-lin;MA Xiao-xun;WANG Xiao-dong(School of Chemical Engineering,Northwest University,International Scientific and Technological Cooperation Base for Clean Utilization of Hydrocarbon Resources,Chemical Engineering Research Center of the Ministry of Education for Advanced Use Technology of Shanbei Energy,Shaanxi Research Center of Engineering Technology for Clean Coal Conversion,Collaborative Innovation Center for Development of Energy and Chemical industry in Northern Shaanxi,Xi'an 710069,China;Key Laboratory of Aerospace Catalytic Materials,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China)

机构地区：[1]西北大学化工学院,国家碳氢资源清洁利用国际科技合作基地,陕北能源先进化工利用技术教育部工程研究中心,陕西省洁净煤转化工程技术研究中心,陕北能源化工产业发展协同创新中心,陕西西安710069 [2]中国科学院航天催化材料重点实验室,中国科学院大连化学物理研究所,辽宁大连116023

出　　处：《天然气化工—C1化学与化工》2019年第3期106-116,共11页Natural Gas Chemical Industry

基　　金：国家自然科学基金项目(No.21303137,21536009,21676269);唐仲英基金会

摘　　要：甲烷化学链重整(CLR)技术是利用固体氧载体中的晶格氧代替气相氧与甲烷反应制取合成气,不仅能够避免CH4/O2混合带来的爆炸风险,还能够大幅提高合成气的选择性,且合成气n(H2)/n(CO)比例接近理想值(~2),而开发具有高循环稳定性、高氧化还原活性、价格低廉且环境友好的氧载体是CLR的关键。本文总结了国内目前化学链重整技术的基本原理、特点和应用于CLR技术中氧载体的研究现状。发现化学链重整中以过渡金属氧载体(Ni、Fe、Cu、Co)为主,目前的氧载体研究重点主要是复合金属氧载体(钙钛矿型氧载体、CeO2类氧载体、六铝酸盐类氧载体),今后的研究重点是如何提高氧载体的反应性能。最后,提出可通过形貌调控、不同离子取代或与其他金属氧化物复合等手段来提高氧载体的CLR性能,并指出CLR研究开发在今后有待加强的研究方向。The chemical-looping reforming of methane (CLR) uses the lattice oxygen in solid oxygen carrier instead of gaseous oxygen to react with methane for producing syngas,which not only avoids the risk of explosion caused by premixing CH4 and O2,but also greatly enhances the selectivity of syngas with desirable H2/CO molar ratio of about 2.The key issue for CLR is the development of oxygen carriers with high cyclic stability,high redox activity,low cost,and environmentally-friendly properties.This paper summarizes the basic principles,characteristics and current research status of oxygen carrier in CLR technology.It is found that the main oxygen carriers used in the chemical-looping reforming are the oxides of transition metals including Ni,Fe,Cu and Co.The current research on oxygen carrier is mainly the composite metal oxygen carriers (perovskite,CeO2-based,and hexaaluminate).The future research focuses on how to improve the reactivity of oxygen carrier.Finally,it is proposed that CLR performance of oxygen carriers can be improved by morphology control,ion substitution or compounding with other metal oxides,and the research direction of CLR in the future is pointed out.

关 键 词：甲烷 化学链重整 金属氧化物 合成气 氧载体 

分 类 号：TE64[石油与天然气工程—油气加工工程]