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A liquid-permeable and gas-barrier fluid composite membrane system

A composite membrane and fluid technology, applied in the direction of semi-permeable membrane separation, membrane, membrane technology, etc., can solve the problems of inability to realize liquid-permeable and gas-blocking functions, high investment costs, and low service life, and achieve easy industrialization promotion and investment Low cost and long service life

Inactive Publication Date: 2021-03-23
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It effectively solves the problems that the traditional membrane separation method cannot realize the liquid-permeable and gas-blocking function, is easy to pollute, has a low service life, low separation efficiency, and high investment costs. The use of a fluid composite membrane system for gas-liquid separation is a low investment cost and high efficiency. Separation, a new type of microporous membrane gas-liquid separation technology that is easy to promote in industrialization

Method used

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  • A liquid-permeable and gas-barrier fluid composite membrane system
  • A liquid-permeable and gas-barrier fluid composite membrane system
  • A liquid-permeable and gas-barrier fluid composite membrane system

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Experimental program
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Effect test

Embodiment 1

[0026] refer to figure 1 , the high-efficiency liquid-permeable and gas-barrier fluid composite membrane system of the present invention includes a solid porous membrane 1 and a functional fluid 2, and the functional fluid 2 infiltrates the solid porous membrane 1 to form a fluid-gated channel that allows the transport fluid 3 to pass through. It is easier to transport liquid through fluid-gated channels than transport gas at the same flow rate. The wettability of the functional fluid 2 and the solid porous membrane 1 is greater than that of the transport fluid 3 and the solid porous membrane 1, and the functional fluid 2 and the transport fluid are immiscible. When the transport fluid 3 is a gas-liquid mixture, only the liquid can pass through the composite membrane, and the gas cannot pass through.

[0027] The solid porous membrane is made of a stainless steel mesh with a woven mesh structure, with a pore size of 20 μm, a thickness of 180 μm, and a diameter of 25 mm. The f...

Embodiment 2

[0031] Such as Figure 6 Shown: In order to further illustrate the application of this high-efficiency liquid-permeable and gas-barrier fluid composite membrane system, refer to Figure 6 ,Will Figure 4 The gas-liquid separation device shown (in the dotted box 1) is combined with a proton exchange membrane fuel cell (PEMFC) (in the dotted box 2) as a cathode to generate O 2 / H 2 The tail gas of O is separated, so that the water body is condensed at the inlet end of the fluid composite membrane system and then discharged through the fluid composite membrane at the outlet of the rear end, while the oxygen is blocked at the front end of the fluid composite membrane, and is passed into the air inlet of the PEMFC cathode from the pipeline, as The recycling of reaction raw materials is conducive to improving the utilization rate of raw materials and saving the use cost of PEMFC. There is a membrane electrode (Membrane electrode assembly, MEA) between the anode and the cathode.

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Abstract

The invention discloses a high-efficiency liquid permeation and gas resistance fluid composite membrane system which comprises a solid porous membrane and a functional fluid, wherein the functional fluid infiltrates the solid porous membrane to form a fluid gate control channel through which a transported fluid can pass; at the same flow rate, the transported fluid can more easily pass through thefluid gate control channel compared with a transported gas, the liquid permeation and gas resistance fluid composite membrane system with the separation efficiency as high as 100% can be obtained, and the liquid permeation and gas resistance fluid composite membrane system has wide application prospects in the fields of environment, energy, chemical reactors, medicines, aerospace and the like. The liquid permeation and gas resistance fluid composite membrane system effectively solves the problems that the traditional membrane separation method cannot realize liquid permeation and gas resistance function, is easy to pollute, has low service life, low separation efficiency, high investment cost and the like, and a technology using the high-efficiency liquid permeation and gas resistance fluid composite membrane system to carry out gas-liquid separation is a novel microporous membrane gas-liquid separation technology with low investment cost, high efficiency separation and easy industrialization popularization.

Description

technical field [0001] The invention relates to the technical field of microporous membrane separation, in particular to a liquid-permeable and gas-blocking fluid composite membrane system. Background technique [0002] Membrane science is of great significance in solving problems in the fields of energy, water resources, environment, biomedicine, ships, submarines, aerospace and other fields faced by contemporary humans. Membrane materials also play an important role in people's lives, such as: daily Sewage treatment and air purification in life; multiphase separation in chemical production; ion monitoring in analysis and detection, etc. With the rapid development of society, the demand for the functional application of materials and the durability of materials has increased sharply, and higher requirements have been put forward for the various properties of membrane materials. [0003] At present, the separation mechanisms of commonly used gas-liquid separation technologi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D69/12B01D69/02B01D61/00
CPCB01D61/00B01D69/02B01D69/12B01D2325/028
Inventor 侯旭刘静盛智芝雷奕吕薇
Owner XIAMEN UNIV
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