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Device and method for integrally modifying membrane module by using remote plasma

A remote plasma and plasma technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problem of inability to scale the membrane module modification, and achieve the purpose of strengthening the chemical reaction caused by free radicals and controlling the Responsiveness, the effect of improving efficiency

Inactive Publication Date: 2013-05-22
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the disadvantage that the existing remote plasma surface modification device cannot modify the entire membrane module composed of multiple flat membranes or tubular membranes, and to provide a method for overall modification of the membrane module using remote plasma. sexual devices and methods

Method used

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  • Device and method for integrally modifying membrane module by using remote plasma

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A device of the present invention that uses remote plasma to modify the membrane assembly as a whole, such as figure 1 As shown, it includes a vacuum pump 12, a membrane module 10, a discharge tube 4, a gas storage tank 1, an inductance coil 5 wound on the discharge tube, a radio frequency matching device 6 connected to the inductance coil, and a radio frequency power supply 7. The air intake of the discharge tube 4 The hole is connected to the gas storage tank 1 through the pressure reducing valve 2 and the flow controller 3, and a vacuum gauge 8 is arranged on the pipeline between the discharge tube 4 and the membrane module 10; The axial air inlet / liquid hole 101 on the air inlet side of the membrane module is connected to the lateral air inlet / liquid hole 102 by pipelines, and the axial air outlet / liquid hole 104 and the side air outlet / liquid hole 103 on the air outlet side of the membrane module are simultaneously The three-way control valve 11 is connected with t...

Embodiment 2

[0037] A device of the present invention that uses remote plasma to modify the membrane module as a whole has the same structure as in Example 1. The device is used to modify the outer surface of the hollow fiber membrane module made of polyvinylidene fluoride:

[0038] Adjust the three-way control valve A9 so that the air outlet hole of the discharge tube 4 is closed to the axial air inlet / liquid hole 101 of the membrane module 10, and the air outlet hole of the discharge tube 4 is opened to the lateral air / liquid hole 102 of the membrane module 10; The three-way control valve B11 closes the axial gas / liquid hole 104 of the membrane module 10 to the vacuum pump 12, and the side gas / liquid hole 103 of the membrane module 10 opens to the vacuum pump 12; the gas stored in the gas storage tank 1 is used to generate plasma The non-polymerizable gas in the body is nitrogen; by adjusting the flow controller 3 at the front end of the vacuum pump 12 and the discharge tube 4, the air pr...

Embodiment 3

[0040] A device of the present invention that uses remote plasma to modify the membrane module as a whole has the same structure as in Example 1. The device is used to simultaneously modify the inner and outer surfaces and membrane pores of the hollow fiber membrane module made of polypropylene material: adjustment The three-way control valve A9 makes the air outlet hole of the discharge tube 4 open to the axial air inlet / liquid hole 101 of the membrane module 10, and the air outlet hole of the discharge tube 4 is closed to the lateral air inlet / liquid hole 102 of the membrane module 10; adjust The three-way control valve B11 closes the axial gas / liquid hole 104 of the membrane module 10 to the vacuum pump 12, and the side gas / liquid hole 103 of the membrane module 10 opens to the vacuum pump 12; the gas stored in the gas storage tank 1 is used to generate plasma The non-polymerizable gas in the body is ammonia; by adjusting the flow controller 3 at the front end of the vacuum ...

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Abstract

The invention relates to a device and method for integrally modifying a membrane module by using remote plasma, belonging to the fields of membrane separation and plasma. The device provided by the invention comprises a vacuum pump, a discharge tube, a gas storage tank and the membrane module, wherein the discharge tube is in pipeline connection with the gas storage tank and is respectively in pipeline connection with an axial gas / liquid inlet and a lateral gas / liquid inlet of the membrane module through three-way control valves; and the axial gas / liquid outlet and the lateral gas / liquid outlet of the membrane module are simultaneously in pipeline connection with the vacuum pump through three-way control valves. The method provided by the invention comprises the following steps that: the unpolymerized gas in the gas storage tank is activated into active particles in the discharge tube; and the active particles flow through the membrane module by adopting the vacuum pump and controlling through adjusting the three-way control valves; and then the modification to the integral membrane module is realized. The invention realizes the scale modification to the integral membrane module consisting of a plurality of flat membranes or tubular membranes, thereby greatly increasing the efficiency; in addition, the directional integral modification to the inner and the outer surfaces and the hole walls of a membrane can be carried out.

Description

technical field [0001] The invention relates to a device and method for integrally modifying a membrane module by using remote plasma, and belongs to the fields of membrane separation technology and plasma technology. Background technique [0002] Membrane separation technology is a new type of separation technology that uses the selectivity of membranes to the components in the mixture to separate, purify and concentrate the target product. Due to the advantages of low energy consumption, high separation efficiency, simple equipment, convenient operation and control, and no environmental pollution, it has been widely used in chemical, pharmaceutical, light industry, food, textile, electronics, metallurgy and other fields. The so-called membrane module is a membrane separation device assembled by a certain area of ​​membrane elements in a certain form, and is the basic unit for installing membranes in engineering applications. According to its shape, there are two types of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D63/00B01D65/00
Inventor 赵之平刘文芳
Owner BEIJING INSTITUTE OF TECHNOLOGYGY