单级-两级膜分离法分离CO2/CH4实验研究  

Experimental Study on CO2/CH4 Separation with Mono-Two Stage Membrane Separation Method

作　　者：江砚池 张忠孝[1,2] 范浩杰 樊俊杰[3] 安海泉 JIANG Yanchi;ZHANG Zhongxiao;FAN Haojie;FAN Junjie;AN Haiquan(School of Mechanical Engineering,Shanghai Jiaotong University,Shanghai 200240,China;Key Laboratory of Coal Gasification and Energy Chemical Industry,Shanghai 200237,China;School of Environment and Architecture,Shanghai University of Technology,Shanghai 200237,China)

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]煤气化及能源化工教育部重点实验室,上海200237 [3]上海理工大学环境与建筑学院,上海200237

出　　处：《锅炉技术》2020年第2期73-79,共7页Boiler Technology

摘　　要：通过建立3~5(STP)m3/h规模的膜分离试验装置,在不同的压力、温度、流量条件下,对单级膜分离法进行了试验研究。并采用串联的方式将2个膜组件进行耦合,形成两段式膜分离系统。研究结果表明:对PI膜组件的单级膜分离法而言,增大气体流量有利于减弱浓差极化现象;提高膜两侧压差和气体温度有利于提高CO2的膜渗透能力。对两级法而言,提升进气压力等条件可以有效提高渗透气CO2浓度达到91.64%;两级法较单级法具有更高分离效果和较低的CO2脱除效率,因此需要根据实际需要进行合理配置。3~5(STP) m3/h experimental system was established to study the carbon removal performance of membrane separation characteristics. While mono-staged membrane method was studied at varies of gas pressure, temperature and flow rate. And two kind of membrane modules were coupled in series to form two-staged membrane separation system. The results shows that increasing concentration of gas is beneficial to decrease concentration polarization for mono-stage membrane separation of PI membrane module. Increasing the pressure at the two sides of the membrane and the gas temperature can improve the CO2 permeability. For the two stage method, increasing the feed gas pressure can effectively enhance CO2 permeability, which lead to an optimal CO2 concentration of 91.64%. The two stage method has higher separation effect and lower CO2 removal efficiency than mono-stage method, but it needs reasonable allocation according to actual needs.

关 键 词：膜分离 PI膜 两段法 CH4回收率 

分 类 号：X701.7[环境科学与工程—环境工程]