Composite separation membrane, method for producing the same, and use thereof, and gas separation method
By using a three-dimensional network structure of organic polymers to fix the filling liquid in a composite separation membrane, the problem of easy liquid membrane loss is solved, achieving separation with high stability and high selectivity, suitable for volatile organic compounds and liquid-liquid separation.
CN117427505BActive Publication Date: 2026-06-16CHINA PETROLEUM & CHEMICAL CORP +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2022-07-13
- Publication Date
- 2026-06-16
AI Technical Summary
Technical Problem
Existing liquid membranes are prone to liquid loss during separation, resulting in poor separation performance and insufficient stability.
Method used
A composite separation membrane is used, including a supporting membrane and a polymer-liquid hybrid membrane, wherein the filling liquid is confined in the network structure of the organic polymer, and the filling liquid is fixed by the three-dimensional network structure of the organic polymer to prevent loss.
Benefits of technology
It improves the stability and separation selectivity of the separation membrane, enhances permeability, and is suitable for volatile organic compounds and liquid-liquid separation. The preparation process is simple and easy to scale up industrially.
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Smart Images
Figure CN117427505B_ABST
Abstract
The present application relates to the field of separation membrane, discloses a kind of composite separation membrane and its preparation method and application, gas separation method, the composite separation membrane includes support film and polymer liquid hybrid membrane;The polymer liquid hybrid membrane includes filling liquid and organic polymer;Wherein, the filling liquid is confined in the network structure of organic polymer.The composite separation membrane provided by the present application uses the three-dimensional network structure of organic polymer to fix the filling liquid in the polymer network, to hinder filling liquid being taken out by the separated object, greatly improves the stability of separation membrane.At the same time, due to the synergistic effect of filling liquid and organic polymer, the separation selectivity and permeability of the composite separation membrane are far higher than those of traditional polymer membrane or liquid membrane.
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