Water-absorbing and oil-resistant filter paper and its preparation method and application

An oil filter paper and a technology for filter paper, applied in the field of water-absorbing and oil-resistant filter paper and its preparation, can solve problems such as unreasonable pore size distribution, unreasonable thickness and thickness matching, etc., so as to solve technical problems and reduce energy consumption, with low cost and uniform pore size distribution. Effect

Active Publication Date: 2021-03-02
CHONGQING FIBER RES & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current domestic oil and gas separation filter paper fiber thickness is unreasonable, the pore size distribution is unreasonable, and it cannot gather and separate oil and water well.

Method used

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  • Water-absorbing and oil-resistant filter paper and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Preparation of absorbent and oil-resistant filter paper

[0025] (1) Dispersion pulping: Add medium-alkali glass fibers with a diameter of 0.8-3.5 μm, chopped glass fibers with a diameter of 6.0 μm, and polyvinyl alcohol fibers into a disperser filled with aqueous sulfuric acid solution at 20°SR The beating degree is beaten and dispersed for 3 minutes to obtain the slurry, the pH value of the slurry is adjusted to 2.5, and the mass concentration is 2.0%, and then the mixed slurry is transferred to a storage tank, and the pH value of the mixed slurry is adjusted to 3.0, and the mass concentration is 2.0%. 0.3%; the mass ratio of medium-alkali glass fiber, chopped glass fiber and polyvinyl alcohol fiber in the mixed slurry is 15:3:2;

[0026] (2) Wet forming: the mixed slurry obtained in step (1) is diluted with water to a mass concentration of 0.2%, and the pH value is adjusted to 3.5, then the mixed slurry is sent to the inclined wire forming paper machine for molding t...

Embodiment 2

[0031] Preparation of absorbent and oil-resistant filter paper

[0032] (1) Dispersion pulping: Add medium-alkali glass fibers with a diameter of 0.8-3.5 μm, chopped glass fibers with a diameter of 5.0 μm, and polyvinyl alcohol fibers into a disperser filled with aqueous sulfuric acid solution at 18°SR The beating degree is beaten and dispersed for 4min to obtain the slurry, the pH value of the slurry is adjusted to 3.0, and the mass concentration is 1.8%, then the mixed slurry is transferred to the storage tank, and the pH value of the mixed slurry is adjusted to 3.5, and the mass concentration is 1.8%. 0.2%; the mass ratio of medium-alkali glass fiber, chopped glass fiber and polyvinyl alcohol fiber in the mixed slurry is 12:3:3;

[0033] (2) Wet forming: the mixed slurry obtained in step (1) is diluted with water to a mass concentration of 0.1%, and the pH value is adjusted to 4.0, and then the mixed slurry is sent to the inclined wire forming paper machine for molding to o...

Embodiment 3

[0038] Preparation of absorbent and oil-resistant filter paper

[0039] (1) Dispersion pulping: Add medium-alkali glass fibers with a diameter of 0.8-3.5 μm, chopped glass fibers with a diameter of 8.0 μm, and polyvinyl alcohol fibers into a disperser filled with aqueous sulfuric acid solution at 20°SR The beating degree is beaten and dispersed for 3 minutes to obtain the slurry, the pH value of the slurry is adjusted to 2.0, and the mass concentration is 2.2%, and then the mixed slurry is transferred to the storage tank, and the pH value of the mixed slurry is adjusted to 2.5, and the mass concentration is 2.5%. 0.5%; the mass ratio of medium-alkali glass fiber, chopped glass fiber and polyvinyl alcohol fiber in the mixed slurry is 18:2:2;

[0040](2) Wet molding: the mixed slurry obtained in step (1) is diluted with water to a mass concentration of 0.3%, and the pH value is adjusted to 4.0, then the mixed slurry is sent to the inclined wire forming paper machine for molding ...

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Abstract

The invention relates to water-absorbing oil-proof filter paper, and a preparation method and application thereof, and belongs to the technical field of glass fiber materials. The filter paper comprises medium alkali containing glass fibers 0.8-3.5 micrometers in diameter, chopped glass fibers 5.0-8.0 micrometers in diameter, water-soluble organic fibers and adhesives, wherein the medium alkali containing glass fibers, the chopped glass fibers and the water-soluble organic fibers are in a mass ratio of (12-18): (2-4): (1-3), and the adhesives comprise, by mass, 1.0-3.0% of film forming agents,0.5-1.0% of hydrophilic oil resistance agent and 96.0-98.5% of solvents. The filtration precision of the filter paper ranges from 14 micrometers to 16 micrometers, and pores 15-20 micrometers in diameter account for 85-95%; the filter paper is hydrophilic, resistant to oil and beneficial to oil and water separation, is used for making oil and gas separators, and has a broad market prospect; the preparation process of the filter paper is simple, and the filter paper is easy to operate, low in cost and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of glass fiber materials, and in particular relates to a water-absorbing and oil-resistant filter paper and a preparation method and application thereof. Background technique [0002] For a long time, the separation of tiny liquid droplets and oil mist entrained in gas has been a prominent problem in the process of natural gas production and transportation, which seriously affects the operation life of gas transmission technology, large compressor units and inner coatings of pipelines. Researchers at home and abroad have conducted continuous and in-depth research on gas-solid filtration separation, but relatively few researchers have studied gas-liquid filtration separation, and the filtration samples used are mainly planar structures. At present, the separators for gas-liquid separation on the market mainly include liquid separation tanks, cyclone separators, baffle separators, defoaming nets and high-effic...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): D21H27/08D21H15/02D21H13/40D21H21/16D21F11/02D21H21/14D21H15/12D21H13/16D21H17/37D21H19/14D21H19/20B01D39/18
Inventor罗杰胡州
OwnerCHONGQING FIBER RES & DESIGN INST CO LTD