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Method for preparing fixed carrier compound membrane for CO2 separation by utilizing interfacial polymerization

A technology for interfacial polymerization and carrier fixation, which is applied in separation methods, semi-permeable membrane separation, and dispersed particle separation to achieve the effects of low cost, simple method and easy operation.

Inactive Publication Date: 2006-02-22
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, few researchers have prepared and separated CO by interfacial polymerization. 2 gas immobilized carrier composite membrane

Method used

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  • Method for preparing fixed carrier compound membrane for CO2 separation by utilizing interfacial polymerization
  • Method for preparing fixed carrier compound membrane for CO2 separation by utilizing interfacial polymerization

Examples

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Effect test

example 1

[0019] The polyethersulfone ultrafiltration membrane is treated with surfactant sodium dodecylsulfonate dilute aqueous solution (mass concentration 0.5%); Get electrodeionized water 1400ml, triethylenetetramine 45ml, be made into a mass concentration of 2.8% Aqueous solution, in addition, add 7.283g of anhydrous sodium carbonate to the aqueous solution; take 1300ml of n-hexane and 12.466g of trimesoyl chloride to prepare a n-hexane solution with a mass concentration of 1.4%. First, immerse the treated polyethersulfone ultrafiltration membrane in the aqueous solution for 10 minutes at room temperature (25° C.), take it out, immerse it in n-hexane solution, take out the interfacial polymerization time for 3 minutes, take it out, wash the composite membrane with electrodeionized water, and then The composite film is heat-treated at 70° C. for 3 minutes, and finally dried at room temperature. With mixed gas 90vol% CO 2 / 10vol%CH 4 Composite membranes were tested. When the feed ...

example 2

[0021] The polysulfone ultrafiltration membrane is treated with surfactant sodium dodecylsulfonate dilute aqueous solution (0.5% in mass concentration); 1000ml of electrodeionized water and 87ml of diethylenetriamine are taken to form an 8% aqueous solution with a mass concentration , in addition, add 9.266g of anhydrous sodium carbonate to the aqueous solution; take 1000ml of n-hexane, 19.678g of trimesoyl chloride, and 20.022g of isophthaloyl chloride, the mass ratio of the two is about 50:50, and the mass concentration is 6%. n-hexane solution. First, at room temperature (20°C), immerse the treated polysulfone ultrafiltration membrane in the aqueous solution for 20 minutes, take it out, immerse it in n-hexane solution, and take it out for 5 minutes in the interfacial polymerization time, wash the composite membrane with electrodeionized water, and then in the temperature 15 Dry naturally at room temperature. With mixed gas 90vol% CO 2 / 10vol%CH 4 Composite membranes were...

example 3

[0023] The polysulfone ultrafiltration membrane is processed with tensio-active agent sodium dodecylsulfonate dilute aqueous solution (0.5wt%); Get electrodeionized water 1000ml, tetraethylenepentamine 130ml, be made into the aqueous solution that mass concentration is 12%, In addition, 5.421 g of anhydrous sodium carbonate was added to the aqueous solution; 1000 ml of n-hexane and 26.452 g of trimesoyl chloride were taken to prepare a n-hexane solution with a mass concentration of 4%. At room temperature (25°C), immerse the treated polysulfone ultrafiltration membrane in the aqueous solution for 5 minutes, take it out, immerse it in n-hexane solution, take out the interfacial polymerization time for 2 minutes, take it out, wash the composite membrane with electrodeionized water, and then heat it at 45°C The composite film was heat-treated for 15 minutes, and finally dried at room temperature. With mixed gas 90vol% CO 2 / 10vol%CH 4 Composite membranes were tested. When the ...

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Abstract

The invention discloses a method for preparation of CO2 carrier- fixed complex film with interfacial polymerization, belonging to the technique for preparation of film. The method contains the following steps: using a sheet film of polysulfone or polyethersulfone or a hollow fibre film as the basilemma, treating the surface of basilemma with a sodium dodecyl sulfonate water solution; soaking the treated basilemma in a diethylenetriamine, triethylene tetraamine, tetraethylene pentamine or polyethylene polyamine water solution in room temperature, and then adding to a trimesoyl- chloride skellysolve B solution or isophthaloyl- chloride skellysolve B solution or trimesoyl- chloride and isophthaloyl- chloride skellysolve B solution to generate interfacial polymerization; purifying the complex film with ionic hydration and drying naturally or drying naturally after a definite thermal treatment. The prepared complex film has a separation factor of 40- 200 to the mixture of CO2 / CH4, and a penetration ratio of 1- 6* 10- 5cm3(STP) / cm2.s.cmHg of CO2. The process is simple and it is easy to operate.

Description

technical field [0001] The invention relates to a method for preparing and separating CO by interfacial polymerization 2 The invention relates to a method for fixing a carrier composite membrane, which belongs to the preparation technology of a gas separation composite membrane. Background technique [0002] Fixed carrier gas separation composite membrane is a new type of gas separation membrane, which has high permeability and selectivity at the same time. Compared with other types of carrier membranes, such as liquid membranes and ion exchange membranes, the fixed carrier composite membrane is not easy to lose, and its stability is greatly improved. Separation of CO 2 Gas immobilized carrier composite membranes are rare in research at home and abroad, and only a few researchers focus on preparing immobilized carrier composite membranes by dip coating or plasma polymerization. Interfacial polymerization is a simple and practical method for prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/12B01D53/22C01B31/20C01B32/50
CPCY02C10/10Y02C20/40Y02P20/151
Inventor 王志赵卷王纪孝伊春海王世昌
Owner TIANJIN UNIV
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