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Development of facilitated transport membrane-gas absorption hybrid system using new hollow fiber membrane

使用新型中空纤维膜开发促进传输膜-气体吸收混合系统

基本信息

批准号：
18360375
负责人：
MATSUYAMA Hideto
金额：
$ 9.79万
依托单位：
Kobe University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18360375/
关键词：
Facilitated Transport membrane Hollow fiber membrane Gas absorption Carrier mediated transport CO_2 separation 二酸化炭素

项目摘要

A membrane-absorption hybrid system for separation of CO_2 was proposed. In this system, the feed gas (CO_2/CH_4 mixture) and carrier solution (aqueous diethanolamine solution) are both supplied to the lumen side (feed side, high pressure side) of the hollow fiber membrane module and flow upward. The carrier or absorbent solution, which contains dissolved CO_2, permeates the membrane and to the permeate side (low pressure side, shell side), where the solution liberates dissolved gas to become a lean solution and the lean solution is recycled to the lumen of the hollow fiber.1.Development of new hollow fiber membranesThe performance of the hollow fiber membrane is one of the key factors to determine the performance of this membrane-absorption hybrid system. Thus, in this work, several new hollow fiber membranes were prepared. The poly(vinyl butyral) (PVB)/EVOH blend membrane and PVB-TiO_2, composite membrane were successfully prepared by the thermally induced phase separation (TIPS). The hydrophilicity of the hollow fiber membrane is quite important to obtain the sufficient wettability of the carrier solution along the membrane wall. Therefore, the new hollow fiber membranes containing polymeric surfactant Pluronic F127 and Tetronic 1307 were also prepared by TIPS and nonsolvent induced phase separation (NIPS).2.CO_2/CH_4 separation by this hybrid methodThe selectivity of CO_2 over CH_4 was about 359-800 and CO_2 in the feed gas was concentrated to 99.4-99.9mol%. The energy required for CO_2 separation was estimated. The present CO_2 recovery system had an economic advantage over the conventional CO_2 separation processes.

提出了一种膜-吸收复合分离系统。在该系统中，进料气体（CO_2/CH_4混合物）和载体溶液（二乙醇胺水溶液）都被供应到中空纤维膜组件的内腔侧（进料侧，高压侧）并向上流动。含有溶解CO_2的载体或吸收剂溶液透过膜并到达渗透侧（低压侧，壳侧），其中溶液释放溶解的气体以成为贫溶液，并且贫溶液被再循环到中空纤维的内腔。1.新型中空纤维膜的开发中空纤维膜的性能是决定该膜性能的关键因素之一。膜-吸收混合系统因此，在这项工作中，制备了几种新的中空纤维膜。采用热致相分离法（TIPS）制备了聚乙烯醇缩丁醛（PVB）/EVOH共混膜和PVB-TiO_2复合膜。中空纤维膜的亲水性对于获得载体溶液沿着膜壁的充分润湿性是相当重要的。因此，本文还用TIPS和非溶剂诱导相分离法（NIPS）制备了含高分子表面活性剂PluronicF 127和Tetronic 1307的中空纤维膜。2.CO_2/CH_4的分离：CO_2对CH_4的选择性为359-800，原料气中CO_2浓度为99.4- 99.9mol%。估算了CO_2分离所需的能量。与传统的CO_2分离工艺相比，本系统具有经济上的优势。