二氧化碳膜分离材料研究进展

Research progress of carbon dioxide membrane separation materials

二氧化碳等温室气体的排放引起全球气候变化,膜分离法作为新兴的二氧化碳分离富集技术,具有操作成本低、不使用溶剂、占地面积小等优势,已成为未来二氧化碳捕集技术发展方向之一。分析了CO2膜分离的机理,综述了CO2膜分离材料的种类及适用范围,指出了未来CO2膜分离材料的发展方向:开发高渗透性、高选择性的复合膜及掺杂膜材料,开发新的成膜工艺,降低制膜成本,与吸收法、吸附技术联用,发挥各自优势是膜分离技术的发展趋势。

The emission of greenhouse gases such as carbon dioxide causes global climate change.As a new carbon dioxide separation and enrichment technology,membrane separation has the advantages of low operation cost,no solvent involved and less area occupancy.It has become one of the development directions of the next generation carbon dioxide capture technology.The mechanism of CO2 separation through membranes is comprehensively analyzed and the types and application scope of CO2 separation membrane are introduced.The development directions of CO2 membrane separation materials in the future are pointed out.The development trend of membrane separation technology is to develop composite membrane and doped membrane materials with high permeability and high selectivity,develop new membrane forming process,reduce membrane production cost,combine with absorption method and adsorption technology.