Solution phase inversion membrane preparation solvent replacement and digestion device

A technology of solution phase inversion and membrane solvent, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of large solvent residue, low solvent recovery rate, solvent loss, etc., to reduce investment and operation Cost, avoiding environmental pollution, and improving the effect of recovery rate
CN102430342AInactive Publication Date: 2012-05-02武钢集团有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
武钢集团有限公司
Publication Date
2012-05-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a solution phase inversion membrane preparation solvent replacement and digestion device and solves problems of present devices, such as high recovery cost, large solvent residual quantity in the membrane, low recovery rate of the solvent and difficulty in realizing solvent replacement and digestion continuous production. The technical scheme is as follows: the device provided by the invention contains a plurality of coagulation baths which are sequentially arranged from front to back; the first coagulation bath is provided with an outlet; the last coagulation bath is provided with an inlet; and adjacent coagulation baths communicate with each other through pipelines or openings on bath walls. The device provided by the invention has advantages of simple structure, high recovery rate of the solvent, low recovery cost and no sewage discharge, and can be used to realize continuous operation of the system.
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Description

technical field

[0001] The invention relates to a device used in the film-making process in water treatment, in particular to a solution phase inversion method film-making solvent replacement stripping device. Background technique

[0002] The phase inversion method is to prepare a homogeneous polymer solution of a certain composition, and through a certain physical method to make the solution perform mass transfer and exchange of solvent and non-solvent in the surrounding environment, change the thermodynamic state of the solution, and make it change from homogeneous polymerization The solution undergoes phase separation, transforms into a three-dimensional macromolecular network gel structure, and finally solidifies to form a film. According to the different physical methods of changing the thermodynamic state of the solution, the phase inversion membrane method can be divided into the following types: solvent evaporation phase inversion method, heat induced phase inversio...

Claims

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