Production process of oil-water separation filter paper

A production process, oil-water separation technology, applied in filter paper, filtration separation, separation methods, etc., can solve problems such as poor paper strength, increase the contact angle, and improve the effect of oil-water separation.

Inactive Publication Date: 2011-03-23
SUZHOU XINYE PAPER - MAKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Regarding the mercerizing treatment technology of plant fibers, it is disclosed in the production technology of automobile filter paper and palm oil filter paper to impregnate plant fibers with lye, so that the fibers become smooth, curled and soft, so that the paper is thick, porous and breathable Increased performance, improved filtration speed, but this method produces poor sheet strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Paper weight 135g / m 2 , using bleached masson pine coniferous wood pulp as raw material, using lye with a concentration of 170g / L for mercerizing treatment, and beating with a Dutch type beating machine for 16 0 SR, wet weight 20g.

[0023] Before the paper sheet is made into shape, water-resistant agent is added to the pulp, and the addition ratio is 80 kg per ton of paper. The water-resistant agent is an aqueous dispersion of glyoxal cross-linked azo compound with a solid content of 14%.

[0024] Air permeability of this filter paper is 15L / M 2 .S, the maximum pore size is 30μm. Using this filter paper to filter gasoline, the removal rate of water can reach 99.1%.

Embodiment 2

[0026] Paper weight 135g / m 2 , using bleached masson pine coniferous wood pulp as raw material, using lye with a concentration of 170g / L for mercerizing treatment, and beating with a Dutch type beating machine for 16 0 SR, wet weight 20g.

[0027] During the drying process of the paper sheet, 80 kg of water-repelling agent was dip-coated on the surface of every ton of paper, and the water-repelling agent was an aqueous dispersion of glyoxal cross-linked azo compound with a solid content of 14%. Then proceed to the drying step.

[0028] Air permeability of this filter paper is 18L / M 2 .S, the maximum pore size is 28μm. Using this filter paper to filter diesel oil, the removal rate of water can reach 99.2%.

Embodiment 3

[0030] Paper weight 135g / m 2 , using bleached masson pine coniferous wood pulp as raw material, using lye with a concentration of 170g / L for mercerizing treatment, and beating with a Dutch type beating machine for 16 0 SR, wet weight 20g.

[0031] An aqueous dispersion of glyoxal cross-linked azo compounds with a solid content of 14% was prepared as a water repellant; a modified acrylic resin mixed liquid with a solid content of 40% was prepared.

[0032] According to the ratio of adding 80 kg of water-resistant agent and 700 kg of modified acrylic resin mixture per ton of paper, dipping and coating onto the surface of the dry paper, and then drying the paper.

[0033] Air permeability of this filter paper is 19L / M 2 .S, the maximum pore size is 29μm. Using this filter paper to filter gasoline, the water removal rate can reach 99.5%; to filter automobile lubricating oil and hydraulic oil, the water removal rate can reach 95%.

[0034] The glyoxal cross-linked azo compound ...

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Abstract

The invention discloses a production process of oil-water separation filter paper, which comprises the steps of adding water resistance agents into paper pulp or soaking and coating water dispersing liquid of the water resistance agents on the surface of paper, and then drying the paper. The water resistance agents are preferably oxalaldehyde crosslinking type azoic compounds. The water resistance agents can be fixedly attached onto paper fiber for increasing the contact angle of water on the paper surface so that the water pouring effect like rolling water beads on lotus leaves can be generated on the paper surface, the water passing can be effectively inhibited for a long time, and the oil-water separation effect can be reached.

Description

technical field [0001] The invention relates to a production process of oil-water separation filter paper, which belongs to the technical field of special paper production. Background technique [0002] As our country enters the stage of building a well-off society in an all-round way, people's living standards continue to improve, car sales are increasing day by day, and industrial production is becoming more and more automated. However, if diesel and gasoline contain water, the fuel combustion value will decrease, and the fuel combustion in the combustion chamber will not be fully burned, which will increase the emission of harmful gases from automobile exhaust and pollute the air. If the hydraulic oil used in automatic production contains water, the metal sulfides and chlorides (from some additives, such as anti-wear additives) and some oxides in the water and the oil will react to produce acid substances, which will not only corrode the components , will also increase t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/08D21H23/14D21H21/16D21H17/37D21H19/20D21H17/07
Inventor 王金夫
Owner SUZHOU XINYE PAPER - MAKING
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