Method for preparing CO2 separation membrane material and composite membrane

A technology for separating membranes and polymers, which is applied in separation methods, semipermeable membrane separations, and dispersed particle separations. It can solve the problems of reduced polymer screening ability and difficulty in improving gas separation performance, and achieves improved plasticization resistance. , Improve membrane dissolution selectivity and good separation performance
CN101733029AInactive Publication Date: 2010-06-16DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Publication Date
2010-06-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a macromolecule separation membrane technology, in particular to a method for preparing a CO2 separation membrane material and a composite membrane, comprising the following steps of: adding DM and PEGA to a tetrahydrofuran dissolvant, and then adding an initiator, wherein the total mass percent of the DM and the PEGA is 5-90 percent, and the mass percent of the initiator is 0.07-1 percent; then heating a 50-90 DEG C of oil bath for reflux; reacting for 10-30h; after the reaction, pouring into a stirring nonpolar dissolvant after the solution is cooled to the room temperature for settlement to obtain a white viscous polymer; and then baking for 20-30h in a vacuum baking oven at the temperature of 70-120 DEG C to obtain a light yellow transparent polymer PDM-PEGA. A composite plate prepared by the invention has good separating performance on CO1 / CH4, CO2 / Na and CO2 / H2.
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Description

technical field

[0001] The present invention relates to polymer separation membrane technology, specifically prepares CO containing functional groups for promoting transfer and ether oxygen functional groups 2 Preferentially permeable separation membranes. Background technique

[0002] CO 2 The separation and removal of is a separation process with great potential and industrial prospects. Hydrogen is one of the main energy sources in the future; at present, the main source of hydrogen is through the reforming of alkanes and the reaction of hydration gas, which produces CO 2 impurity gas, in order to obtain pure hydrogen source, CO 2 The removal is very important. Natural gas is one of the main energy and chemical raw materials in the world in recent decades, and natural gas products often contain a large amount of CO 2 Impurities, which not only affect the quality of natural gas combustion, but also corrode pipelines and equipment for transporting natural gas (CO 2 is...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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