关键词: CO2捕集;燃烧后捕集技术;钙基吸收剂;磷石膏分解渣

Abstract: The greenhouse gas CO2 is one of the main causes of environmental degradation in the world. In recent years,CO2 capture technology has been on the spotlight. This article expounds the principle and characteristics of carbon dioxide capture and storage (CCS)technology,three methods of post-combustion capture of are summarized and compared. What's more,this paper mainly analyzes the characteristics and advantages by using calcium-based sorbent trapping CO2 ,puts forward the exploration direction of CO2 capture technology and points out the idea of using phosphogypsum decomposition slag as the calcium-based sorbent to mineralize CO2 in order to realize the purpose of "using waste to treat waste".

Key words: CO2 capture;post-combustion capture technology;calcium-based sorbent;phosphogypsum decomposition slag