Abstract Carbon dioxide (CO2) capture by gas-separation membranes has become increasingly attractive due to its high energy efficiency, relatively low cost, and environmental impact. Polyvinylamine (PVAm)-based facilitated transport (FT) membranes were developed in the last decade for CO2 capture. This work discusses the challenges of applying PVAm-based FT membranes from materials to processes for post-combustion CO2 capture in power plants and cement factories. Experiences learned from a pilot demonstration system can be used to guide the design of other membranes for CO2 capture. The importance of module and process design is emphasized in the achievement of a high-performance membrane system. Moreover, the results from process simulation and cost estimation indicate that a three-stage membrane system is feasible for achieving a high CO2 purity of 95 vol%. The specific CO2 capture cost was found to significantly depend on the required CO2 capture ratio, and a moderate CO2 capture ratio of 50% presented a cost of 63.7 USD per tonne CO2 captured. Thus, FT membrane systems were found to be more competitive for partial CO2 capture.

中文翻译：

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用于燃烧后 CO2 捕集的基于聚乙烯胺的促进运输膜：从材料到工艺的挑战和前景

摘要 气体分离膜捕获二氧化碳 (CO2) 因其高能效、相对较低的成本和环境影响而变得越来越有吸引力。过去十年中开发了基于聚乙烯胺 (PVAm) 的易化传输 (FT) 膜来捕获 CO2。这项工作讨论了将基于 PVAm 的 FT 膜从材料应用到发电厂和水泥厂燃烧后 CO2 捕获过程的挑战。从试点示范系统中学到的经验可用于指导其他用于 CO2 捕获的膜的设计。模块和工艺设计的重要性在高性能膜系统的实现中得到强调。而且，过程模拟和成本估算的结果表明，三级膜系统对于实现 95 vol% 的高 CO2 纯度是可行的。发现特定的 CO2 捕集成本在很大程度上取决于所需的 CO2 捕集率，50% 的中等 CO2 捕集率表示每捕集一吨 CO2 的成本为 63.7 美元。因此，发现 FT 膜系统对于部分 CO2 捕获更具竞争力。