Tubular hollow fiber membrane, preparation method and application

A fiber membrane, hollow technology, applied in the field of air dehumidification system and its process, can solve the problems of droplet corrosion, high energy consumption, frosting on the surface of the cooler, etc., to avoid solution corrosion, ensure penetration efficiency, and high packing density. Effect

Active Publication Date: 2016-07-20
山东美诺邦马节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cooling and dehumidification method needs to cool the temperature of the air below its dew point, and the cooled air needs to be heated before it can be sent into the room. During this process, the temperature and humidity cannot be controlled independently, resulting in low energy efficiency and high energy consumption; Moisture condenses on the surface of the cooler, making the cooler humid all the year round, providing a place for bacteria to grow and multiply, and seriously degrading the indoor air quality; and for conditions where the dew point temperature is too low, it is easy to cause frost on the cooler surface, which requires a special device Perform defrosting treatment on it. Membra

Method used

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  • Tubular hollow fiber membrane, preparation method and application
  • Tubular hollow fiber membrane, preparation method and application
  • Tubular hollow fiber membrane, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Prepare 7 g of polyvinylidene fluoride, 1 g of polyethylene glycol-2000, and 92 g of 80 wt.% N,N-dimethylformamide solution in a conical flask. Control the temperature to 60°C, fully stir for 4 hours to dissolve, and let it stand for 12 hours to defoam. It becomes a transparent and uniform casting solution. Add 5g of graphene and put it into an ultrasonic scrubber for 20 minutes. 4g of polyvinyl alcohol (PVA), 7g of dimethyl sulfoxide and 1g of lithium chloride were dissolved in 88g of water, stirred at a temperature of 80°C for one hour to obtain the pre-cortex solution, which was colorless and transparent. Then add the pre-cortex liquid into 5% glutaraldehyde solution, stir at room temperature for 2 minutes to obtain the cortex liquid, the concentration of the pre-cortex liquid in the cortex liquid is 0.3ml / 100g. Nitrogen gas was sprayed into the cavity, and the casting solution was used image 3 The nozzle shown sprays into the gel bath to form a film. Control the ...

Embodiment 2

[0047] Prepare 9 g of polyvinylidene fluoride, 1.5 g of polyethylene glycol-2000, and 90.5 g of 85 wt.% N,N-dimethylformamide solution in a conical flask. Control the temperature at 60°C, fully stir for 4 hours to dissolve, and let it stand for 12 hours to defoam. It becomes a transparent and uniform casting solution. Add 7g of graphene and put it in an ultrasonic cleaner for 20 minutes. Dissolve 4g of polyvinyl alcohol, 7g of dimethyl sulfoxide and 1g of lithium chloride in 88g of water, stir at a temperature of 80°C for one hour to obtain a pre-cortex liquid, which is colorless and transparent, and then the cortex The pre-solution was added to 5% glutaraldehyde solution, and stirred at room temperature for 2 minutes to obtain a cortex solution. The concentration of the cortex pre-solution in the cortex solution was 0.4ml / 100g. Nitrogen gas was sprayed into the cavity, and the casting solution was used image 3 The nozzle shown is sprayed into the gel bath to form a film, an...

Embodiment 3

[0050] Prepare 12g of polyvinylidene fluoride, 2g of polyethylene glycol-2000, and 84g of 90wt.% N,N-dimethylformamide solution in a conical flask. Control the temperature at 60°C, fully stir for 4 hours to dissolve, and let it stand for 12 hours to defoam. It becomes a transparent and uniform casting solution. Add 10g of copper powder and put it in an ultrasonic cleaner for 20 minutes. 4g of polyvinyl alcohol (PVA), 7g of dimethyl sulfoxide and 1g of lithium chloride were dissolved in 88g of water, stirred at a temperature of 80°C for one hour to obtain the pre-cortex solution, which was colorless and transparent. Then add the pre-cortex liquid into 5% glutaraldehyde solution, stir at room temperature for 2 minutes to obtain the cortex liquid, the concentration of the pre-cortex liquid in the cortex liquid is 0.3ml / 100g. Spray air in the inner cavity, and use the casting solution image 3 The nozzle shown is sprayed into the gel bath to form a film, and the film thickness is...

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Abstract

The invention discloses a tubular hollow fiber membrane, a preparation method and application.The fiber membrane is of a hollow tubular structure, wherein a tube wall comprises a skin layer and a porous support layer sequentially from outside to inside, the skin layer is made from polyvinyl alcohol, the thickness of the skin layer is 5-20 microns, the porous support layer contains a thermal conductive material, and the thermal conductive material accounts for 40-60% by the total mass of the porous support layer.The thickness of the skin layer is 5-20 microns, the tubular hollow fiber membrane is advantageous to permeation of water vapor in the membrane, and the production costs are also controlled.In addition, the porous support layer of the tubular hollow fiber membrane contains the thermal conductive material with the mass fraction of 40-60%, and the thermal conductivity coefficient is improved.

Description

technical field [0001] The invention relates to an air dehumidification system and a process thereof, in particular to a tubular hollow fiber membrane, a preparation method and an application. Background technique [0002] According to statistics, people spend 80% of their time indoors, so it is extremely important to adjust and control the indoor environment to ensure the comfort of the indoor human body. Adjusting the indoor environment is mainly achieved by controlling the two parameters of temperature and humidity in the room. Excessive humidity will hinder the evaporation of sweat, affect heat dissipation and skin surface temperature, and make people feel uncomfortable. The summer and winter thermal comfort zones proposed by ASHRAE have corresponding controls on humidity. Taking the PMV value (expected average evaluation) as the evaluation index of human thermal comfort, when the room temperature is 26°C, the PMV value will increase by about 0.1 for every 10% increase...

Claims

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Application Information

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IPC IPC(8): B01D69/04B01D69/08B01D69/10B01D67/00B01D71/34B01D53/22B01D53/26C02F1/44
CPCB01D53/228B01D53/268B01D67/0011B01D67/0013B01D69/04B01D69/08B01D69/085B01D69/10B01D71/34C02F1/44
Inventor 郭志虎魏希坡张立志杨友波
Owner 山东美诺邦马节能科技有限公司
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