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Apparatus and method for microwave enhanced membrane distillation process

A distillation process and membrane strengthening technology, applied in the field of membrane distillation, can solve the problems of membrane fouling and low membrane flux

Inactive Publication Date: 2013-03-27
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The starting point of the present invention is to solve some problems in the membrane distillation process to a certain extent, mainly the problems of low membrane flux and membrane fouling after large-scale application

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  • Apparatus and method for microwave enhanced membrane distillation process
  • Apparatus and method for microwave enhanced membrane distillation process
  • Apparatus and method for microwave enhanced membrane distillation process

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Embodiment Construction

[0024] In view of the greater throughput of the vacuum membrane distillation process, this embodiment adopts vacuum membrane distillation and microwave vacuum membrane distillation respectively, and carries out microwave-assisted on-line cleaning and drying of contaminated membranes. The specific application scope of the present invention is not limited by this embodiment . Below taking sodium chloride aqueous solution as feed liquid, verify the practicability of the present invention by comparative test.

[0025] Basic conditions:

[0026] (1) Feed liquid: NaCl aqueous solution, conductivity is about 6000μs / cm; cleaning solution: deionized water, conductivity is about 2μs / cm; microwave power 1000W;

[0027] (2) Cavity parameters: cavity size 350mm×215mm×330mm, cavity volume 25L;

[0028] (3) Hollow fiber membrane module parameters: PVDF hollow fiber membrane module, membrane head diameter 320mm, effective working length 180mm, effective membrane area 0.107m 2 ;

[0029] (...

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Abstract

The present invention provides an apparatus and a method for a microwave enhanced membrane distillation process. According to the present invention, a microwave reaction chamber for microwave and negative pressure operation is manufactured, and comprises six parts such as a chamber, a chamber top cover, a microwave head interface, a component fixation flange, a pressing flange and a membrane head locking member; a membrane assembly for operation in a microwave field is designed and manufactured, penetrates through the component fixation flange on the chamber, and is fixed through the pressing flange, the membrane head locking member, a silica gel gaskets and other accessories; a microwave magnetron is connected with the chamber top cover through the microwave head interface so as to achieve a microwave environment in the chamber; and a water circulating pump, steam catching, condensation and other equipment are complemented so as to achieve organic combination of microwave radiation, the membrane assembly and the membrane distillation process, such that the microwave enhanced membrane distillation process can be achieved, and microwave-assisted online cleaning and drying of pollution films can be concurrently achieved.

Description

A technical field [0001] The invention belongs to the technical field of membrane distillation, and in particular relates to a method and a device of microwave-assisted membrane distillation desalination technology. Two background technology [0002] The rapid development of membrane distillation (MD) technology in the past three decades has led to continuous breakthroughs in the preparation of hydrophobic microporous membranes. Among them, hollow fiber membranes have gradually become the first choice for membrane distillation due to their high packing density, easy installation and operation of components, and small footprint. Although membrane distillation technology is developing rapidly and researches are becoming more and more extensive, there are still three urgent problems to be solved in order to apply membrane distillation to actual production: 1) The hollow fiber hydrophobic membrane prepared by the current commonly used phase inversion method is in pursuit of Mem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/36B01D65/08
Inventor 王军纪仲光栾兆坤贾智萍
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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