热力发电2023，Vol.52Issue(12)：115-123,9.DOI:10.19666/j.rlfd.202304052
离子液体捕集火电厂烟气CO2模拟与分析
Simulation analysis of CO2 capture at coal-fired power plant with ionic liquids
摘要
Abstract
The CO2 capture process using ionic liquids(ILs)in the coal-fired power plant is simulated,in which the physical properties of ILs and ILs-CO2 phase equilibria are modelled based on experimental data.Analysis shows that the increase of packed height and absorption pressure is beneficial for CO2 absorption,while the inlet temperature has the dual effect as it influences both the ILs viscosity and CO2 solubility.The optimum condition is determined with 20 m packed height,4 MPa absorption pressure and 50℃inlet temperature.The regeneration process is more energy efficient with pressure swing method,in which the pressure of ILs-CO2 stream is reduced to 0.1 MPa with almost no ILs loss.Energy consumption and cost analysis shows that the multistage compressor is the most energy-intensive unit,and the absorption pressure has the largest effect on the system with 4 MPa the optimum parameter.With the optimum condition,the energy consumption of the process is 2.21 GJ/t,which is more energy-efficient than the conventional carbon capture system using monoethanolamine.关键词
离子液体/CO2捕集/物理吸收/燃煤电厂Key words
ionic liquids/CO2 capture/physical absorption/coal-fired power plant引用本文复制引用
刘逸芸,刘向阳,贾林权,牛国平,蒙毅,谭增强..离子液体捕集火电厂烟气CO2模拟与分析[J].热力发电,2023,52(12):115-123,9.基金项目
国家自然科学基金项目(51976072) （51976072）
中国华能集团有限公司总部科技项目"基础能源科技研究专项"(HNKJ20-H50) National Natural Science Foundation of China(51976072) （HNKJ20-H50）
Science and Technology Project of China Huaneng Group Co.,Ltd.(HNKJ20-H50) （HNKJ20-H50）
