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A kind of preparation method of cotton pulp for high-strength filter paper

A cotton pulp, high-strength technology, applied in the field of pulp manufacturing, can solve the problems of filter cleaning ability decline, moisture absorption performance and strength influence, automobile engine failure, etc.

Active Publication Date: 2022-01-21
山东银鹰股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the texture quality of the filter paper is a direct factor affecting the quality of the filter. Since the filter paper has been in contact with gasoline for a long time in actual work, it has been immersed in gasoline for a long time, and the actual hygroscopicity and strength of the filter paper will be greatly affected. The cleaning ability of the cleaner is reduced, and even cause the car engine to fail

Method used

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  • A kind of preparation method of cotton pulp for high-strength filter paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1, a kind of preparation method of cotton pulp for high-strength filter paper, comprises the following steps:

[0036] A. Cotton opening:

[0037] With the air-dried pulp 2640Kg / ball or the absolute-dried pulp 2401Kg / ball as the basic unit, it is manually separated according to the requirements of the feeding thickness ≤ 10cm and put into the cotton opener. The feeding time of each basic unit is ≥ 30min, and then two series of seven The roller opener and three five-roller openers in series are all turned on, so that the pulp output by the opener passes through in sequence;

[0038] The frequency of the opening fan on the opener is set to 50 Hz / min, and cotton linters are used for air-dried pulp or absolute-dried pulp.

[0039] B. Alkali

[0040] Prepare alkali solution with the standard of 9600L / ball (relative to air-dried pulp 2640Kg / ball or absolute dry pulp 2401Kg / ball);

[0041] The concentration of NaOH in the alkali solution is 39g / L, and the tempera...

Embodiment 2

[0064] Embodiment 2, a kind of preparation method of cotton pulp for high-strength filter paper, comprises the following steps:

[0065] A. Cotton opening:

[0066] With the air-dried pulp 2650Kg / ball or the absolute-dried pulp 2411Kg / ball as the basic unit, it is manually separated according to the requirements of the feeding thickness ≤ 10cm and put into the cotton opener. The feeding time of each basic unit is ≥ 30 minutes, and then two series-connected The seven-roller opener and three five-roller openers in series are all turned on, so that the pulp output by the opener passes through in sequence;

[0067] The frequency of the opening fan on the opener is set to 50 Hz / min, and cotton linters are used for air-dried pulp or absolute-dried pulp.

[0068] B. Alkali

[0069] Prepare alkali solution with the standard of 9600L / ball (relative to air-dried pulp 2650Kg / ball or absolute dry pulp 2411Kg / ball);

[0070] The concentration of NaOH in the alkali solution is 40g / L, and...

Embodiment 3

[0093] Embodiment 3, a kind of preparation method of cotton pulp for high-strength filter paper, comprises the following steps:

[0094] A. Cotton opening:

[0095] With the air-dried pulp 2660Kg / ball or the absolute-dried pulp 2421Kg / ball as the basic unit, it is manually separated according to the requirements of the feeding thickness ≤ 10cm and put into the cotton opener. The feeding time of each basic unit is ≥ 30min, and then two series-connected seven The roller opener and three five-roller openers in series are all turned on, so that the pulp output by the opener passes through in sequence;

[0096] The frequency of the opening fan on the opener is set to 50 Hz / min, and cotton linters are used for air-dried pulp or absolute-dried pulp.

[0097] B. Alkali

[0098] Prepare alkali solution with the standard of 9600L / ball (relative to air-dried pulp 2660Kg / ball or absolute dry pulp 2421Kg / ball);

[0099] The concentration of NaOH in the alkali solution is 41g / L, and the ...

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Abstract

The invention discloses a method for preparing cotton pulp for high-strength filter paper. The cotton pulp has the following indicators: degree of polymerization DP: 550-600; whiteness ≥ 84%; ash content ≤ 0.15%; degree of percussion 20-25 °SR; pH: 3‑5. The high-strength filter paper prepared by the method in the present invention can not only ensure hygroscopicity, but also ensure the strength of the filter paper.

Description

technical field [0001] The invention relates to a method for preparing cotton pulp, in particular to a method for preparing cotton pulp for high-strength filter paper, and belongs to the technical field of pulp manufacturing. Background technique [0002] Filter paper (Filter Paper) is a common filtering tool, the common shape is round, most of the filter paper is composed of cotton fibers, and it is made by different methods according to different purposes. Because its material is made of fiber, there are countless small holes on its surface for liquid particles to pass through, but larger solid particles cannot pass through. This property allows the separation of liquid and solid substances that are mixed together. In real life, filter paper is also used in gasoline filters to filter out impurities in gasoline. [0003] However, the texture quality of the filter paper is a direct factor affecting the quality of the filter. Since the filter paper has been in contact with g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C3/02D21C3/22D21C9/02D21D1/02D21D5/00D21C9/00D21C9/12D21C9/10D21H11/12D21H27/08
Inventor 陈忠国曹知朋马伟良唐逢郑春友吕兴华李宗臻孙海龙
Owner 山东银鹰股份有限公司