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Polyvinyl alcohol hybrid membrane pervaporation device for laboratories and permeation separation technology thereof

A polyvinyl alcohol and pervaporation technology, applied in semi-permeable membrane separation, pervaporation, membrane technology and other directions, can solve the problems of high energy consumption and low separation efficiency, and achieve improved separation efficiency, simple separation process, and energy saving. Effect

Inactive Publication Date: 2016-03-23
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can effectively solve the problems of high energy consumption and low separation efficiency of traditional separation technology in the past

Method used

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  • Polyvinyl alcohol hybrid membrane pervaporation device for laboratories and permeation separation technology thereof
  • Polyvinyl alcohol hybrid membrane pervaporation device for laboratories and permeation separation technology thereof
  • Polyvinyl alcohol hybrid membrane pervaporation device for laboratories and permeation separation technology thereof

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Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with the examples, but the implementation of the present invention is not limited thereto.

[0036] Such as figure 1 As shown, a polyvinyl alcohol hybrid membrane pervaporation device for laboratory use includes a raw material chamber 1, a permeation membrane 2, a permeation side chamber 3, a pervaporation pressure regulator 4, a heat exchange device 5, and a permeate condensation Device 6, permeation tank 7 and permeation side vacuum pump device 8; pervaporation membrane 2 is located between raw material cavity 1 and permeation side cavity 3, fixed by flange 9, with stainless steel mesh to protect pervaporation membrane 2, The permeation evaporation pressure regulator 4 is connected to the permeate side cavity 3, the permeate side cavity 3 is connected to the permeate condensation device 6, the seepage tank 7 is connected to the permeate condensation device 6, and the permeation side vacuum ...

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Abstract

The invention discloses a polyvinyl alcohol hybridized membrane pervaporation device for laboratories and a permeation separation technology thereof. The device comprises a raw material cavity, a pervaporation membrane, a permeation side cavity, a pervaporation pressure adjusting device, a heat exchange device, a penetrating fluid condensing device, a seeping tank and a permeation side vacuum pump device, wherein a polyvinyl alcohol (PVA) and tetraethyl orthosilicate (TEOS) hybrid membrane is taken as the pervaporation membrane. By adopting the device, the problems that a traditional separation technology in the prior art is high in energy consumption and low in separation efficiency can be effectively solved. Due to the fact that a polyvinyl alcohol hybrid membrane for pervaporation is added with tetraethyl orthosilicate, the mechanical performances, such as swelling property and fragility, of the polyvinyl alcohol membrane are improved; the compactness of the polyvinyl alcohol membrane is improved; the permeation flux of the membrane is reduced; the selectivity of the membrane is improved; an esterification reaction is facilitated; and the conversion rate of the esterification reaction is improved.

Description

technical field [0001] The invention relates to the technical field of chemical separation, in particular to a laboratory-used polyvinyl alcohol hybrid membrane pervaporation device and a permeation separation process. Background technique [0002] Membrane separation technology is a rapidly developing high-tech, which can be used for separation, concentration, purification and essence. Pervaporation (PV for short) is to form a vacuum on the permeation side of the membrane. The chemical potential difference between the front and rear sides of the membrane is used as the driving force to accompany the phase change, and the separation is carried out by the selective adsorption of the membrane and the difference in the permeation rate in the membrane. . Since only one component needs to be vaporized during the separation process, energy consumption and cost can be reduced, and no other components are introduced during the separation process, so the technology itself has the ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/36B01D71/38
CPCB01D61/366B01D61/362B01D71/38
Inventor 黄洪张超杰邢征徐佳杰
Owner SOUTH CHINA UNIV OF TECH
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