膜接触器 复合有机胺溶液捕集CO2(英文）

本文提出一种基于氨基酸盐的CO₂复合吸收剂，采用膜接触器 复合溶液耦合技术研究了吸收CO₂的性能，并与单一氨基酸盐溶液吸收性能进行了比较，讨论了气液流速等因素对气液出口CO₂浓度、捕集效率和总传质系数的影响，开发了一个阻力层模型预测膜接触器的总传质系数。结果表明：复合溶液的性能明显好于单一氨基酸盐溶液；与单一溶液比较，使用复合溶液，气相出口CO₂浓度较低，液相出口CO₂浓度较高，捕集效率也较高；复合溶液的总传质系数明显高于单一溶液。可以证实，在膜吸收过程中氨基酸盐基复合溶液是一高效的CO₂吸收剂。模型的预测值符合实验值。

Membrane-based CO_2 absorption into blended amine solutions

A blended solution based on amino acid salt was presented as a CO_2 absorbent. Coupling process of a membrane contactor and the blended solution was investigated. The performances of the blended solution were experimentally compared with the single amino acid salt solution. Effects of various factors such as gas and liquid flow rates on CO_2 concentration at gas and liquid outlets, capture efficiency, and overall mass transfer coefficient were discussed. A resistance in series model was developed to predict the overall mass transfer coefficients. Results show that performance of the blended solution is evidently better than that of the single solution. The blended solution can give lower CO_2 concentration at gas outlet and higher CO_2 concentration at liquid outlet as well as higher capture efficiency when compared with the single solution. The overall mass transfer coefficient with the blended solution is much higher than that with the single solution. The blended solution is confirmed to be an efficient absorbent for CO_2 capture in membrane gas absorption. Model values are in good agreement with the experimental values.