富氧燃烧烟气压缩纯化一体化脱硫脱硝:机制与工业进展  

SOx/NOx Co-removal during Compression-Purification of Oxy-fuel Flue Gas:Rection Mechanism and Industrial Development

作　　者：饶娜 吴元旦 石金明[1,2] 张泰 RAO Na;WU Yuandan;SHI Jinming;ZHANG Tai(Institute of Energy Research,Jiangxi Academy of Sciences,Nanchang 330096,China;Jiangxi Carbon Neutrality Research Center,Nanchang 330096,China)

机构地区：[1]江西省科学院能源研究所,南昌330096 [2]江西省碳中和研究中心,南昌330096

出　　处：《能源研究与管理》2023年第4期66-75,共10页Energy Research and Management

基　　金：江西省重点研发计划“揭榜挂帅”项目(20223BBG74009);江西省碳中和研究中心双碳科技创新项目(2022JXST01);科学院博士引进项目(2022YYB07);南昌市生物质液化高值利用重点实验室(2021-NCZDSY-020)。

摘　　要：富氧燃烧技术作为一种高效的CO_(2)捕集方法和能效提升手段是实现3060目标的关键技术之一。然而,富氧燃烧目前的研究多集中于前端空气分离制氧和燃烧过程中参数的调控,而对后端烟气净化处理的关注度不足,严重制约了富氧燃烧技术的工业发展进程。从富氧燃烧烟气纯化技术的角度出发,围绕脱硫脱硝的反应机制及烟气压缩纯化技术的发展现状2个方面进行了详细的综述,通过对比当下技术和工业发展进程,指明了富氧燃烧烟气压缩纯化技术未来发展方向。目前烟气压缩纯化的技术研究探索了SO_(x)/NO_(x)压缩转化为酸性物质的反应机制,最佳操作条件,工艺流程优化等。全球范围内的示范项目完成了脱硫脱硝反应机制、一体化脱除的可行性及全链条富氧燃烧技术改造等的验证,但由于各项目之间的工艺流程各不相同,无法进行能耗等性能的对比。未来仍需要开展长期示范项目对烟气成分,氧化剂和工艺流程优化进行进一步的研究。Oxy-fuel combustion technology,as an efficient CO_(2) capture technique and a means to enhance energy efficiency,is a key technology for achieving the 3060 targets.Current researches on oxy-fuel combustion primarily focus on the front-end processes of air separation for oxygen production and the regulation of parameters during combustion.However,there is insufficient attention to the back-end purification of exhaust gases,which has seriously restricted the industrial development of oxy-fuel combustion technology.This review embarks from the development status of compression and purification technology in oxy-fuel combustion,centering on both reaction mechanisms of desulfurization and denitrification and industrial advancements.By comparing current technologies and industrial developments,it outlines future directions for the compression and purification technology in oxy-fuel combustion.The research explores reaction mechanisms,optimal operating conditions,and process optimizations for compressing SO_(x)/NO_(x) into acidic substances.Demonstrative projects worldwide have verified the technical feasibility of desulfurization and denitrification reaction mechanisms and comprehensive oxy-fuel combustion transformations.However,due to varying process flows among projects,a comparison of energy consumption and other performance factors is challenging.Future efforts should include long-term demonstration projects to further study exhaust gas components,oxidizers,and process optimizations.

关 键 词：富氧燃烧 压缩纯化 酸压缩 一体化脱硫脱硝 

分 类 号：TK16[动力工程及工程热物理—热能工程] X701[环境科学与工程—环境工程]