膜法捕集CO_2时的系统传质系数研究  

Study on System Mass Transfer Coefficient of Carbon Dioxide Capture by Membrane Method

作　　者：李芳芹[1] 李彦超[1] 李赫男[1] 任建兴[1] 吴江[1] 韩宏哲 

机构地区：[1]上海电力学院 能源与机械工程学院,上海200090 [2]洛阳市建设委员会质量监督站,河南洛阳471000

出　　处：《上海电力学院学报》2012年第6期537-540,共4页Journal of Shanghai University of Electric Power

基　　金：国家自然科学基金(50806041);上海市教育委员会重点学科(J51304)

摘　　要：在膜接触器实验装置上,研究了以一乙醇胺(MEA)为吸收液,捕集CO_2时的试验性能.考察了混合气浓度、气液流速和溶液再生等因素对CO_2传质系数的影响.结果表明:提高吸收液或者烟气流量,可提高总传质系数,而增加进口烟气中的CO_2浓度会导致总传质系数的降低;由于溶液再生时溶剂有所损失,使得再生溶液的传质效果要小于原液.Monoethanolamine（MEA） is chosen as the absorbing liquid to capture CO2. Factors affecting the CO2 mass transfer coefficient of mixed-gases concentration, gas-liquid flow rate and regeneration solution are studied. Results show that improving the absorption liquid or flue gas flow can improve overall mass transfer coefficient while increasing CO2 concentration of flue gas leads to the reduction of the overall mass transfer coefficient because of the solvent loss during regenera- tion process, mass transfer coefficient of regeneration solution is poor.

关 键 词：中空纤维膜接触器 二氧化碳 一乙醇胺 烟气 传质系数 

分 类 号：X701[环境科学与工程—环境工程]