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A new gas-liquid film contactor

A gas-liquid membrane contactor and gas-liquid contact technology, applied in chemical instruments and methods, separation methods, and separation of dispersed particles, can solve the problems of large pressure drop on the air side, inability to achieve compactness, and large system volume, and achieve The effect of preventing water vapor condensation, enhancing heat and mass transfer on the air side, and enhancing heat and mass transfer capacity

Inactive Publication Date: 2020-11-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shell-and-tube module also has the following problems: due to the uneven arrangement of the membrane, the heat and mass transfer on the air side is poor. This defect can be improved by increasing the filling rate of the membrane, but it will cause the problem of excessive pressure drop on the air side.
As a result, systems tend to be bulky and cannot be compact

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A new type of gas-liquid membrane contactor, including a gas-liquid delivery unit, a gas-liquid contact unit, a liquid storage unit 3 and a heating device, the gas-liquid contact unit and the liquid storage unit are matched through the gas-liquid delivery unit 3;

[0052] The gas-liquid conveying unit comprises a primary transmission shaft 101, a secondary conveying shaft 102 and a tertiary conveying shaft 103, the secondary conveying shaft 102 and the tertiary conveying shaft 103 are respectively hollow shafts; the secondary conveying shaft 102 is respectively connected to the primary transmission The shaft 101 and the tertiary delivery shaft 103 form a detachable fixed connection; the secondary delivery shaft 102 and the tertiary delivery shaft 103 are provided with a solution delivery channel 104 and a liquid return channel 105, and the end of the tertiary delivery shaft 103 is provided with an opening. A liquid suction impeller 106 is provided at the opening, and the...

Embodiment 2

[0058] The implementation process of this application: Driven by an external power source, the first-stage transmission shaft 101 drives the gas-liquid contact unit to rotate, and the suction impeller 202 sucks the gas into the gas-liquid exchange chamber 2013 during rotation, and flows through the hollow fiber membrane tube 2014 Surface, heat and mass exchange occurs on the surface of the film tube, and it is discharged through the air discharge hole on the inner wall of the channel 203; the liquid suction impeller 106 rotates, thereby driving the solution to flow upward, and enters the liquid delivery rod 1021 through the solution delivery channel 104, and enters The secondary liquid separation chamber 2012 continues from bottom to top, flows through the interior of the hollow fiber membrane tube 2014 in the gas-liquid exchange chamber 2013 and enters the primary liquid separation chamber 2011, and then is transported through the liquid connected to the primary liquid separati...

Embodiment 3

[0060] The rest are consistent with Embodiment 1 or 2; the novel gas-liquid film contactor of the present application also includes a base bracket, and the base bracket includes a positioning base 401, a positioning rod 402 and a positioning plate 403, and the positioning rod 402 is arranged on the positioning base 401, and the positioning plate 403 is provided with two, the liquid storage unit 3 is arranged on the positioning base 401, and the gas-liquid contact unit is arranged between the positioning plates 403, and the positioning plate 403 is provided with a relief hole, and a ball bearing 404 is arranged in the relief hole, and the gas-liquid contact unit is arranged between the positioning plates 403. The liquid delivery unit is fitted with ball bearings 404 .

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Abstract

The invention discloses a novel gas-liquid membrane contactor, comprising a gas-liquid conveying unit, a gas-liquid contact unit, a liquid storage unit and a heating device; a containing cavity comprises a gas-liquid exchange chamber and a first stage liquid separation chamber and a second stage liquid separation chamber which are respectively arranged at the two ends of the gas-liquid exchange chamber; the gas-liquid exchange chamber is internally provided with a plurality of hollow fiber membrane tubes; the outer wall of the containing cavity is provided with gas absorbing impellers; a second stage conveying shaft is provided with liquid delivery support rods having hollow structures, and the liquid delivery support rods correspond to solution holes; the inner wall of an abdication channel is provided with air discharge holes; the liquid storage unit is matched with the heating device. The structural design of the novel gas-liquid membrane contactor is simple and reasonable; the gasabsorbing impellers serve as a fan; a liquid suction impeller serves as a pump; all the components cooperate with each other so as to achieve a synergistic effect; gas rotates in the hollow fiber membrane tubes in the gas-liquid contact unit; therefore, not only is the air-side mass transfer capability greatly enhanced, but the rotating gas-liquid contact unit also prevents condensation and aggregation of liquid drops on the surface of the membrane tubes, and the operating stability of the overall device is guaranteed.

Description

technical field [0001] The invention relates to the technical field of gas-liquid membrane separation, in particular to a novel high-efficiency integrated gas-liquid membrane contactor. Background technique [0002] Membrane separation technology is a technology that uses the concentration difference of substances inside and outside the membrane to separate the substances inside and outside the membrane, which has the characteristics of energy saving and environmental protection. According to the material form of the medium inside and outside the membrane, membrane separation can be further subdivided into liquid-liquid membrane separation, gas-liquid membrane separation and liquid-solid membrane separation. Different membrane separation processes require different forms of membrane modules, such as reverse osmosis technology represented by common liquid-liquid membrane separation, the separation must be carried out under high pressure, so the requirements for membrane modul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/22
CPCB01D53/228B01D2053/224
Inventor 何奎张立志
Owner SOUTH CHINA UNIV OF TECH
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