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A production process of cotton pulp for manufacturing quantitative and qualitative filter paper

A production process and qualitative filter paper technology, applied in filter paper, papermaking, pulp bleaching, etc., can solve problems such as unsuitable for quantitative and qualitative filter paper, high metal ion content in finished products, cumbersome manufacturing process, etc.

Active Publication Date: 2021-09-14
山东银鹰股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Chinese patent, application number CN200810016757.4 discloses a title "a cotton pulp production process for manufacturing automobile oil and gas filter paper". In the method, cotton linters are used as raw materials to produce cotton pulp for automobile oil and gas filter paper. The process is cumbersome, and the finished product has high metal ion content, which is not suitable for the production of quantitative and qualitative filter paper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] In an embodiment of the present invention, a production process of cotton pulp for quantitative and qualitative filter paper, the process comprises the following steps:

[0040] (1) Material selection, cotton opening, and dry impurity removal: select 100% cotton linters with a maturity of 78% of the third category, and use a cotton opener to open the cotton linters. The thickness of the material is ≤ 10cm According to the requirements, tear it apart and put it into the cotton opener. The feeding time of each basic unit is ≥30min, and then it is sent to the impurity remover for selection and impurity removal. The slurry output by the impurity remover passes through sequentially;

[0041] Then it is sent to the screw press through the cyclone separator for alkali preparation and impregnation.

[0042] (2) Alkali preparation and impregnation: prepare lye at room temperature, control the temperature of lye at 15°C, and the concentration of 40g / L. Before measuring the alkal...

Embodiment 2

[0061] A kind of cotton pulp production process for manufacturing quantitative and qualitative filter paper, the process comprises the following steps:

[0062] (1) Material selection, cotton opening, and dry impurity removal: select 100% cotton linters with a maturity of 79% of the third category, and use a cotton opener to open the cotton linters. Feeding time: 51 minutes, and use the impurity remover to select and remove impurities. When using, the five-roller cleaning machine is fully opened, and then sent to the screw press and impregnated through the cyclone separator.

[0063] (2) Alkali blending and impregnation: Alkali blending at room temperature, temperature at 27°C, alkali blending concentration: 40g / L, (circulate 20 minutes before measuring the alkali concentration), alkali liquid ratio 1:3.8, through screw extrusion, and cotton short The velvet is fully infiltrated and mixed, and conveyed to the cooking process by a screw.

[0064] (3) Injection aids: use H 2 o...

Embodiment 3

[0078] (1) Material selection, cotton opening, and dry impurity removal: select 100% of the three types of cotton linters with a first-level maturity of 78 to 79%, and use a cotton opener to open the cotton linters. Opening, feeding time: 55min, and use the impurity remover to select and remove impurities. When in use, the five-roller cleaning machine is fully opened in two ways, and then sent to the screw press and impregnated through the cyclone separator.

[0079] (2) Alkali blending and impregnation: Alkali blending at room temperature, control temperature at 26°C, alkali blending concentration: 42g / L, (cycle ≥ 20min before measuring alkali concentration), alkali liquor ratio 1:3.8, through screw extrusion, and The linters are fully infiltrated and mixed, and conveyed to the cooking process by a screw.

[0080] (3) Injection aids: use H 2 o 2 , the specification is 700Kg / ball, during the ball loading process, it is pumped into the steamed ball continuously through the pu...

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Abstract

The invention discloses a production process of cotton pulp for quantitative and qualitative filter paper. The cotton pulp has the following indicators: degree of polymerization 1150-1250; whiteness ≥ 88%; iron content ≤ 12ppm; ash content ≤ 0.07%; fiber length 23 ~32%; A fiber ≥ 98.5%; moisture 7~10%; small dust ≤ 13mm² / 500g, with explosion-proof and anti-static functions. Good, with high methyl fiber content, stable polymerization degree, less dust, and can be better used for laboratory analysis of filter paper.

Description

technical field [0001] The invention relates to a production process of cotton pulp, in particular, to a production process of cotton pulp for quantitative and qualitative filter paper, which is used for quantitative precision analysis and solid-liquid separation tests in laboratories, and belongs to cotton pulp technology field. Background technique [0002] Quantitative Analysis Filter Paper [0003] Quantitative analysis of filter paper During the manufacturing process, the pulp is treated with hydrochloric acid and hydrofluoric acid, and washed with distilled water to remove most of the impurities in the paper fibers, so there is little residual ash after burning, which has almost no effect on the analysis results. It is suitable for For precise quantitative analysis. [0004] At present, the domestically produced quantitative analysis filter paper is divided into three categories: fast, medium and slow, and the filter paper boxes are classified with white belt (fast),...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H11/12D21C3/22D21C3/02D21C9/12D21C9/16D21H27/08
CPCD21C3/02D21C3/222D21C9/12D21C9/163D21H11/12D21H27/08
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
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