基于富氧燃烧的CO_(2)液化提纯工艺优化分析  

Optimization Analysis of CO_(2) Liquefaction Purification Process Based on Oxygen Enriched Combustion

作　　者：江蓉[1] 甘爽 李小姗[2] 倪宏伟 赖勇杰 李亮 JIANG Rong;GAN Shuang;LI Xiao-shan;NI Hong-wei;LAI Yong-jie;LI Liang(Sichuan Air Separation Plant Group Co.,Ltd.,Jianyang 641400,Sichuan Province,China;State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]四川空分设备(集团)有限责任公司,四川简阳641400 [2]华中科技大学煤燃烧国家重点实验室,武汉430074

出　　处：《动力工程学报》2023年第1期102-108,共7页Journal of Chinese Society of Power Engineering

基　　金：国家重点研发计划资助项目(2019YFE0100100);国家自然科学基金资助项目(51806076)。

摘　　要：针对烟气S/N/Hg一体化压缩净化工艺,对典型的富氧燃烧CO_(2)烟气的液化提纯工艺进行分析并提出了新工艺,通过建构CO_(2)液化提纯系统模型,对新工艺在各运行工况下的相关物质、能量流动进行了模拟,并结合(火用)分析对工艺参数进行了优化研究。结果表明:当净化后烟气中CO_(2)体积分数为76.6%,压力为3 MPa时,可得到体积分数为99.99%的CO_(2)液体产品,CO_(2)收率可达90%,此时压缩液化提纯系统最低单位能耗为158(kW·h)/t。Based on the S/N/Hg integrated flue gas compression purification process,the CO_(2)flue gas liquefaction purification process of typical oxygen enriched combustion was analyzed and a new process was proposed.By constructing the CO_(2)liquefaction purification system model,the flow of related substances and energy of the new process under various operating conditions was simulated,and the process parameters were optimized based on the exergy analysis.Results show that when CO_(2)volume fraction in the purified flue gas is 76.6%and the pressure is 3 MPa,99.99%CO_(2)liquid product can be obtained,and the CO_(2)recovery rate can reach 90%,the minimum energy consumption of the compression liquefaction purification system is 158(kW·h)/t.

关 键 词：富氧燃烧 CO_(2)液化提纯 工艺优化 (火用)分析 

分 类 号：X773[环境科学与工程—环境工程]