Efficiency Separation Process of H-2/CO2/CH(4)Mixtures by a Hollow Fiber Dual Membrane Separator
发表时间：2020-07-16
点击次数：
- 论文类型：
- 期刊论文
- 第一作者：
- Xiao, Wu
- 通讯作者：
- He, GH (corresponding author), Dalian Univ Technol, R&D Ctr Membrane Sci & Technol, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116023, Peoples R China.; He, GH (corresponding author), Dalian Univ Technol, Panjin Ind Technol Inst, Panjin 124221, Peoples R China.
- 合写作者：
- Gao, Pei,Dai, Yan,Ruan, Xuehua,Jiang, Xiaobin,Wu, Xuemei,Fang, Yuanxin,He, Gaohong
- 发表时间：
- 2020-05-01
- 发表刊物：
- PROCESSES
- 收录刊物：
- SCIE
- 文献类型：
- J
- 卷号：
- 8
- 期号：
- 5
- 关键字：
- hydrogen purification; dual membrane separator; ternary gas mixtures; optimization; membrane area ratio
- 摘要：
- Hydrogen purification and CO(2)capture are of great significance in refineries and pre-combustion power plants. A dual membrane separator offers an alternative approach for improving H-2/CO(2)separation efficiency. In this work, H-2/CO2/CH(4)ternary gas mixtures separation can be achieved by a dual membrane separator with an integrated polyimide (PI) membrane and polydimethylsiloxane/polyetherimide (PDMS/PEI) composite membrane. A hollow fiber dual membrane separation equipment is designed and manufactured. Through the self-designed device, the effects of stage cut, operating temperature, operating pressure, and membrane area ratio on separation performance of dual membrane separator have been studied. The results indicate that, at a high stage cut, a dual membrane separator has obvious advantages over a single membrane separator. Operating temperature has a significant impact on gas permeation rates. At 25 degrees C, a dual membrane separator can obtain the highest purity of H(2)and CO2. By increasing operating pressure, the purity and recovery of H(2)and CO(2)can be improved simultaneously. The effect of the membrane area ratio on the performance of the dual membrane separator was studied. When the permeate flows of two membranes are approximately equal by changing the membrane area ratio, the overall performance of the dual membrane separator is the best. On the basis of its synergy in promoting separation, the dual membrane separator holds great industrial application potential.
- 是否译文：
- 否
