Department of Mechanical Engineering, Chung Yuan Christian University, Chung-Li 32023, Taiwan, ROC.
J Hazard Mater. 2010 Jul 15;179(1-3):692-700. doi: 10.1016/j.jhazmat.2010.03.057. Epub 2010 Mar 19.
In this study, the recovery of carbon dioxide using an absorbent composed of 2-amino-2-methyl-l-propanol (AMP)+monoethanolamine (MEA)+piperazine (PZ) in polytetrafluoroethylene (PTFE) membrane contactors was investigated. Experiments were conducted using various gas flow rates, liquid flow rates, absorbent blends, and pore size membranes. CO(2) recovery increased with increasing liquid flow rates. The blended amine absorbent had a synergistic effect on CO(2) recovery. CO(2) recovery increased as the pore size of the PTFE membrane decreased. An asymmetric membrane had a better CO(2) recovery than that of symmetric membrane. Besides, membrane mass transfer coefficient and operational stability of asymmetric membrane were enhanced. For an asymmetric membrane, the smaller pore-size side of the membrane surface contacting the liquid phase can reduce the level of wetting of the membrane.
在这项研究中，使用由 2-氨基-2-甲基-1-丙醇（AMP）+单乙醇胺（MEA）+哌嗪（PZ）组成的吸收剂，在聚四氟乙烯（PTFE）膜接触器中回收二氧化碳。实验采用了不同的气体流速、液体流速、吸收剂混合物和孔径膜。CO(2)回收率随液体流速的增加而增加。混合胺吸收剂对 CO(2)回收具有协同作用。随着 PTFE 膜孔径的减小，CO(2)回收率增加。不对称膜的 CO(2)回收率优于对称膜。此外，不对称膜的膜传质系数和操作稳定性得到了提高。对于不对称膜，与液相接触的膜表面的小孔径侧可以降低膜的润湿程度。
