Permeation Characteristics of Light Hydrocarbons Through Poly(amide-6-β-ethylene oxide) Multilayer Composite Membranes

doi:10.1016/S1004-9541(13)60462-0

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (3): 232-237.DOI: 10.1016/S1004-9541(13)60462-0

Permeation Characteristics of Light Hydrocarbons Through Poly(amide-6-β-ethylene oxide) Multilayer Composite Membranes

任晓灵, 任吉中, 李晖, 邓麦村

National Engineering Research Center of Membrane Technology, Dalian Institute of Chemical Physics, CAS, Dalian 116023, China

收稿日期:2011-04-06 修回日期:2011-11-07 出版日期:2013-03-28 发布日期:2013-04-01
通讯作者: REN Jizhong
基金资助:
Supported by Key Projects in the National Science & Technology Pillar Program (2011BAC08B00).

Permeation Characteristics of Light Hydrocarbons Through Poly(amide-6-β-ethylene oxide) Multilayer Composite Membranes

REN Xiaoling, REN Jizhong, LI Hui, DENG Maicun

National Engineering Research Center of Membrane Technology, Dalian Institute of Chemical Physics, CAS, Dalian 116023, China

Received:2011-04-06 Revised:2011-11-07 Online:2013-03-28 Published:2013-04-01
Supported by:
Supported by Key Projects in the National Science & Technology Pillar Program (2011BAC08B00).

摘要/Abstract

摘要： In this paper, poly(amide-6-β-ethylene oxide) (PEBA1657) copolymer was used to prepare multilayer polyetherimide (PEI)/polydimethylsiloxane (PDMS)/PEBA1657/PDMS composite membranes by dip-coating method. Permeation behaviors of ethylene, ethane, propylene, propane, n-butane, methane and nitrogen through the multilayer composite membranes were investigated over a range of operating temperature and pressure. The permeances of light hydrocarbons through PEI/PDMS/PEBA1657/PDMS composite membranes increase with their increasing condensability, and the olefins are more permeable than their corresponding paraffins. For light hydrocarbons, the gas permeances increase significantly as temperature increasing. When the transmembrane pressure difference increases, the gas permeance increases moderately due to plasticization effect, while their apparent activation energies for permeation decrease.

关键词: poly(amide-6-&, beta, -ethylene oxide), light hydrocarbons, multilayer composite membrane, transport

Abstract: In this paper, poly(amide-6-β-ethylene oxide) (PEBA1657) copolymer was used to prepare multilayer polyetherimide (PEI)/polydimethylsiloxane (PDMS)/PEBA1657/PDMS composite membranes by dip-coating method. Permeation behaviors of ethylene, ethane, propylene, propane, n-butane, methane and nitrogen through the multilayer composite membranes were investigated over a range of operating temperature and pressure. The permeances of light hydrocarbons through PEI/PDMS/PEBA1657/PDMS composite membranes increase with their increasing condensability, and the olefins are more permeable than their corresponding paraffins. For light hydrocarbons, the gas permeances increase significantly as temperature increasing. When the transmembrane pressure difference increases, the gas permeance increases moderately due to plasticization effect, while their apparent activation energies for permeation decrease.

Key words: poly(amide-6-&, beta, -ethylene oxide), light hydrocarbons, multilayer composite membrane, transport

任晓灵, 任吉中, 李晖, 邓麦村. Permeation Characteristics of Light Hydrocarbons Through Poly(amide-6-β-ethylene oxide) Multilayer Composite Membranes[J]. Chinese Journal of Chemical Engineering, 2013, 21(3): 232-237.

REN Xiaoling, REN Jizhong, LI Hui, DENG Maicun. Permeation Characteristics of Light Hydrocarbons Through Poly(amide-6-β-ethylene oxide) Multilayer Composite Membranes[J]. Chin.J.Chem.Eng., 2013, 21(3): 232-237.

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Permeation Characteristics of Light Hydrocarbons Through Poly(amide-6-β-ethylene oxide) Multilayer Composite Membranes

Permeation Characteristics of Light Hydrocarbons Through Poly(amide-6-β-ethylene oxide) Multilayer Composite Membranes

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