甲烷-氮气分离膜研究进展及展望  

Research progress and prospect of CH_(4)/N_(2) separation membranes

作　　者：陈雷[1] 李东泽[1] 刘刚[1] 崔鹏[2] 杜伟 CHEN Lei;LI Dongze;LIU Gang;CUI Peng;DU Wei(Shandong Provincial Key Laboratory of Oil&Gas Storage and Transportation Safety,China University of Petroleum(East China),Qingdao,Shandong 266000,China;Oil Production Technology Institute,PetroChina Dagang Oilfield Company,Tianjin 300280,China;PipeChina West East Gas Pipeline Company,Zhengzhou,Henan 450008,China)

机构地区：[1]中国石油大学(华东)山东省油气储运安全省级重点实验室,山东省266555 [2]中国石油大港油田公司采油工艺研究院 [3]国家石油天然气管网集团有限公司西气东输公司

出　　处：《天然气工业》2022年第5期120-130,共11页Natural Gas Industry

基　　金：广东省重点领域研发计划项目“油气储运重大基础设施灾害防御关键技术及装备研发与示范”(编号:2019B111102001)。

摘　　要：油气行业是甲烷减排的重要关注行业,膜分离技术是实现甲烷高能效、低成本回收与减排的重要技术之一。针对油气生产与运输过程中存在的CH_(4)与N_(2)混合排放问题,分类综述了聚合物膜、无机膜、MOF混合基质膜在CH_(4)/N_(2)分离领域的研究进展,分析了存在的主要问题以及可行的解决途径,探讨了油气行业CH_(4)/N_(2)膜分离技术未来的研究方向。研究结果表明:①提高CH_(4)/N_(2)分离膜的分离性能仍是当下研究的首要目标,需借助分子模拟、机器学习等技术探寻合适的MOF、离子液体等材料与基质膜的配对组合;②应考虑油气行业特定的复杂应用场景,开展CH_(4)/N_(2)分离膜修饰层构建方法研究,提高膜的耐污能力,保证膜的分离效率与使用寿命;③应加强与分离膜相匹配的底膜材料的研发,基于膜组件研发,还应综合考虑膜材料性能、分离效果、经济效益,对膜分离工艺流程及运行参数进行优化设计。结论认为,尽管相关研究已开展多年,但尚处于实验室探索阶段,亟待形成以高性能膜材料为核心的甲烷“零成本/负成本”回收方法,以促进油气行业“碳中和”目标的早日实现。Oil and gas industry is an important industry concerned with ethane emission reduction,and membrane separation technology is one of the important technologies to achieve high energy efficiency,low-cost recovery and emission reduction of methane.To address the mixed emission of CH_(4) and N_(2) in the process of oil and gas production and transportation,this paper overviews the research progress of polymeric membranes,inorganic membranes and MOF mixed matrix membranes in the field of CH_(4)/N_(2) separation.Then,the main problems and their feasible solutions are analyzed,and the future research direction of CH_(4)/N_(2) membrane separation technology in oil and gas industry is discussed.And the following research results are obtained.First,improving the separation performance of CH_(4)/N_(2) separation membranes is still the primary goal of current research,and it is necessary to explore the suitable pairing combination of MOF,ionic liquid and other materials and matrix membranes by virtue of molecular simulation and machine learning.Second,it is necessary to take into consideration the specific complex application scenarios in oil and gas industry and research the construction method of CH_(4)/N_(2) separation membrane modification layer,so as to improve the fouling resistance of membrane and ensure the membrane separation efficiency and service life.Third,it is necessary to strengthen the research and development of substrate membrane materials matching with the separation membrane.Based on the research and development of membrane module,the process flow and operation parameters of membrane separation shall be optimized by considering membrane material performance,separation effect and economic benefit comprehensively.In conclusion,the related researches have been carried out for many years,but they are still in the stage of laboratory exploration,so it is in an urgent need to develop a methane recovery method of"zero cost/negative cost"with high performance membrane materials as the core,so as to achieve the"ca

关 键 词：油气行业 甲烷减排 膜分离 聚合物膜 MOF 混合基质膜 渗透系数 选择性 

分 类 号：TQ051.893[化学工程] X701[环境科学与工程—环境工程]