Development of Alkyl-Functionalized New Polyamine Based Non-Aqueous Solvent for Energy Efficient CO2 Capture

本项目开发了一种新型异丙基官能化多胺(IPFPA)非水溶剂(NAS)，用于从燃烧后的烟气中回收二氧化碳，在降低溶剂再生能量的同时，显著提高了二氧化碳的捕集性能。本项目共合成了10个纯度高(98%)、收率高(96%)的新的(第二代)异丙酚(S)。NAS体系是以IPFPA为吸收剂，以市售乙醇/非乙醇为溶剂制成的。去年，所有合成多胺的优化工作全部完成。今年完成了5种醇类溶剂和5种非醇类溶剂的筛选实验，筛选出表现最佳的IPFPA。异丙基功能化多胺IP-DMDPTA为最佳多胺，1-甲基咪唑(1MIM)为最佳有机溶剂。对基于(IP-DMDPTA+1MIM)的NAS进行了优化，全面测试了其所有相关性能，确定了其最佳组成，即具有高CO2吸收率、高CO2循环量和最小热能消耗。

This project, new isopropyl-functionalized polyamine (IPFPA) based non-aqueous solvent (NAS) was developed for the recovery of CO2 from post-combustion flue gases that will achieve a significant increase in CO2 capture performances with a reduction of solvent regeneration energy. A total of 10 new (Generation II) IPFPA(s) was synthesized with high purity (>98%) and excellent yield (>96%) during this project. The NAS system was made by mixing IPFPA as absorbent and commercially available alcohol/non-alcohol as solvent. Last year the optimization of all synthesized polyamine completed. This year 5 alcohol solvents and 5 non-alcohol solvents screening experiments was completed with the best IPFPA performer. Isopropyl functionalized polyamine IP-DMDPTA was identified as best polyamine and 1-methylimidazole (1MIm) was identified as best organic solvent. (IP-DMDPTA+1MIm) based NAS was optimized, thoroughly measuring all relevant properties, and identified their best composition which give high CO2 absorption rate, high cyclic amount of CO2, and consume the minimal amount of heat energy.