基于化学链矿化技术的火电厂二氧化碳捕集利用工业试验  

Industrial test of CO_(2)capture and utilization from flue gas in thermal power plant based on chemical looping mineralization technology

作　　者：宋作玉 田景奇 蔡力宏 李卫国 丁春宏 孙志国 马志红 SONG Zuoyu;TIAN Jingqi;CAI Lihong;LI Weiguo;DING Chunhong;SUN Zhiguo;MA Zhihong(Yuanchu Technology(Beijing)Co.,Ltd.;National Energy Group Shanghai Electric Power Co.,Ltd.;Department of Chemical Engineering,Tsinghua University;Guodian Datong Power Generation Co.,Ltd.)

机构地区：[1]原初科技(北京)有限公司 [2]国家能源集团上海电力有限公司 [3]清华大学化学工程系 [4]国电电力大同发电有限责任公司

出　　处：《环境工程技术学报》2025年第2期486-494,共9页Journal of Environmental Engineering Technology

基　　金：国家能源集团2022年十大科技攻关项目。

摘　　要：以工业废料通过化学链矿化捕集二氧化碳制备微细碳酸钙,是火电厂二氧化碳捕集并资源化利用的途径之一。介绍了国家能源集团在大同热电厂建设的电石渣矿化二氧化碳工业化试验装置的工艺、运行情况、碳减排量以及碳酸钙产品特性。该中试采用氯化氨为循环提取剂,二氧化碳的吸收矿化在三相反应器中一步完成。试验装置设计处理量为1000 t/a(以二氧化碳计),试验累计运行超3000 h,最长连续运行时间为768 h,最大运行负荷达设计值为148%。结果表明:二氧化碳吸收率大于90%,原料钙提取矿化率大于90%,经第三方评测,二氧化碳净减排率达到68.6%;碳酸钙产品达到工业沉淀碳酸钙标准,粒度(D_(50))小于20μm。Chemical looping mineralization of carbon dioxide(CO_(2))with industrial waste to produce fine calcium carbonate is a potential way of CO_(2)capture and utilization for thermal power plants.An industrial test plant for the mineralization of CO_(2)with carbide slag was established and run at Datong Thermal Power Plant of China National Energy Group.Here,we reported the process,running conditions and results,carbon emission reduction,and the characteristics of calcium carbonate products of the pilot test.In the pilot process,with ammonia chloride as the looping extraction chemicals,the absorption and mineralization of CO_(2)were integrated in one three-phase reactor.The pilot plant was designed with a scale of 1000 t/a(calculated by CO_(2)),running more than 3000 hours cumulatively.The longest continuous operation time reached 768 hours,with the maximum operating load reaching 148%of the design value.The results showed that the CO_(2)absorption rate was beyond 90%and over 90%of calcium in the carbide slag had been converted into CaCO_(3).According to third-party evaluations,the net CO_(2)emission reduction was 68.6%.Calcium carbonate products could meet the standard of precipitated calcium carbonate for industrial use with particle size of D_(50)<20μm.

关 键 词：二氧化碳捕集封存与利用(CCUS) 二氧化碳矿化 电石渣 碳酸钙 氯化铵 

分 类 号：X51[环境科学与工程—环境工程]