摘要
高炉渣CO2矿化利用技术,在减排CO2的同时,可以实现固体废物的资源化,达到"以废治废"的目的,是具备环境与经济双重效益的CO2捕集利用与封存(carbon dioxide capture,utilization and storage,CCUS)路线。本研究运用生命周期评价的方法,以消耗1 t高炉渣为研究单元,对不同CO2捕集方式(燃烧后捕集系统和富氧燃烧捕集系统)与两种新型高炉渣CO2矿化工艺进行组合,模拟出4种CCUS运行方案。对4种方案从CO2捕集、运输、封存到产品生产的碳排放和成本进行了系统核算。结果表明:仅燃烧后系统矿化联产富铝产品、富氧燃烧系统矿化联产铵明矾、富氧燃烧系统矿化联产富铝产品3种方案能达到CO2封存要求,碳封存效率分别为29%、32.7%、76.2%;这3种方案的生命周期运行成本分别为544、1384、530元。其中,富氧燃烧系统矿化联产铵明矾方案,不仅可以封存大量的CO2,而且预期利润最大,约297元,工业化应用前景广阔。
The mineralization and utilization technology of CO2 by means of blast furnace slag(BFS)is a route of CO2 capture,utilization and storage(CCUS)with both environmental and economic benefits,which can reduce CO2 emissions and realize the utilization for solid waste.This technology can achieve the"controlling waste by waste"purpose.Here,life cycle assessment method was used to simulate four CCUS scenarios by combining different CO2 capture technologies(post-combustion capture system and oxy-combustion capture system)with two novel CO2 mineralization processes,with the consumption of 1 t BFS as a research unit.Carbon emissions and cost under four CCUS scenarios from CO2 capture,transportation and storage to product production were systematically calculated.The results showed that three scenarios can meet the requirements of CO2 emissions reduction,including co-production of aluminum-rich products by mineralization under post-combustion capture system,co-production of ammonium aluminum by mineralization under oxy-combustion capture system,and co-production of aluminum-rich products by mineralization under oxy-combustion capture system.Their carbon storage efficiency was29%,32.7%,and 76.2%,respectively.Furthermore,the life cycle cost of those three scenarios was 544,1384,and 530 CNY,respectively.Among them,scenario of co-production of ammonium aluminum by mineralization under oxy-combustion capture system can store a large amount of CO2 and obtain the largest profit(about 297 CNY),with a broad prospect of industrial application.
作者
马铭婧
郗凤明
王娇月
尹岩
常莎莎
MA Ming-jing;XI Feng-ming;WANG Jiaoyue;YIN Yan;CHANG Sha-sha(Institute of Applied Ecology,Chinese Academy of Science,Shenyang 110016,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《生态学杂志》
CAS
CSCD
北大核心
2020年第6期2097-2105,共9页
Chinese Journal of Ecology
基金
国家自然科学基金项目(41977290)资助。
关键词
CO2矿化利用
高炉渣
生命周期评价
CO2捕集利用与封存
CO2mineralization and utilization
blast furnace slag
life cycle assessment
carbon dioxide capture,utilization and storage
