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Multi-cold-source cooling air gap type membrane distillation cooling assembly

A technology of cooling components and membrane distillation, applied in the direction of total evaporation, membrane technology, semi-permeable membrane separation, etc., can solve the problem of low membrane flux, achieve the effect of enhancing heat exchange efficiency, promoting condensation, and strengthening condensation

Pending Publication Date: 2021-10-26
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Air-gap membrane distillation has the advantages of high thermal efficiency and strong technical adaptability, but at the same time has the problem of low membrane flux

Method used

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  • Multi-cold-source cooling air gap type membrane distillation cooling assembly
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  • Multi-cold-source cooling air gap type membrane distillation cooling assembly

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no. 1 example

[0025] According to the first embodiment of the present invention, an air-gap membrane distillation cooling assembly cooled by multiple cooling sources includes a porous hydrophobic membrane 4 and a cold fluid pipeline 7, the upper side of the porous hydrophobic membrane 4 is provided with a heat flow area 3, The right side of the heat flow area 3 is provided with a hot fluid outlet 2, the underside of the porous hydrophobic membrane 4 is provided with an air gap 8, and the air gap 8 is provided with a cold fluid pipeline 7, and the cold fluid pipeline 7 A copper plate 10 is installed below, a distilled water outlet 9 is provided on the front side of the air gap 8 , and a cold fluid outlet 6 is provided above the distilled water outlet 9 .

[0026] According to the above features, the cold fluid inlet 5 is provided on the left side of the cold fluid pipeline 7 , and the hot fluid inlet 1 is provided on the left side of the hot flow area 3 .

[0027] In some examples, annular f...

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Abstract

The invention discloses a multi-cold-source cooling air gap type membrane distillation cooling assembly, which comprises a porous hydrophobic membrane and a cold fluid pipeline, the upper side of the porous hydrophobic membrane is provided with a heat flow area, the right side of the heat flow area is provided with a hot fluid outlet, the lower side of the porous hydrophobic membrane is provided with an air gap, and the cold fluid pipeline is arranged in the air gap. A copper plate is installed below the cold fluid pipeline, a distilled water outlet is formed in the front side of the air gap, and a cold fluid outlet is formed above the distilled water outlet. Annular fins are arranged on the cold fluid pipeline, so that the heat exchange efficiency of cold fluid is enhanced, and the overall efficiency of air gap membrane distillation is improved. The copper plate with the fins is arranged at the bottom of the air gap, the copper plate is cooled through air cooling, condensation of water vapor is promoted, and the overall efficiency of air gap membrane distillation is improved.

Description

technical field [0001] The invention belongs to the technical field of distillation devices, in particular to an air-gap membrane distillation cooling assembly cooled by multiple cold sources. Background technique [0002] Membrane distillation is a new separation technology that combines thermodynamic process (distillation) with membrane separation process, and is widely used in the desalination, desalination and concentration processes of seawater, brackish water and industrial wastewater. Air-gap membrane distillation has the advantages of high thermal efficiency and strong technical adaptability, but at the same time has the problem of low membrane flux. The existence of the air-gap layer in air-gapped membrane distillation can significantly reduce the heat loss caused by heat conduction and weaken the temperature polarization effect, improving the thermal efficiency of the membrane distillation process. At the same time, the morphology of the membrane module becomes div...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/36F28B1/02F28B9/08
CPCB01D61/364B01D61/366B01D61/368F28B1/02F28B9/08
Inventor 刘姝君马峰吴江波张耀聪吕垚睢子仪王文婷郭新瑞安周建
Owner LANZHOU UNIVERSITY OF TECHNOLOGY