Clean paper making method by kenaf

A papermaking method and clean technology, applied in the field of paper pulping, can solve problems such as cancer occurrence

Inactive Publication Date: 2009-12-02
李朝旺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional hemp pulping process has two major pollutions: one is the discharge of "black liquor" formed by pollutants such as COD and BOD; the other is the pollution of "dioxins" produced by bleaching with chlorine-containing chemicals, especially chlorine Bleached hemp pulp cigarette paper, "dioxins" generated by residual chlorine in the paper and tobacco organic matter at a certain temperature can easily lead to cancer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0004] 1. Cut the kenaf into small pieces of 2-5cm, soak and transport to the thread rolling machine to twist into fiber bundles.

[0005] 2. Transport the fiber bundles to the stainless steel container, add the chelating agent and penetrating agent at the same time, stir evenly, and when the steam reaches 80°C, add the potassium-based hydrogen peroxide generated by the hydroxide in the ion-exchange membrane switch, and introduce oxygen at the same time , The hydroxyl radicals and active oxygen radicals generated under the catalysis of ultraviolet light break the chromophoric groups of lignin, soften and disintegrate the fibers, and become coarse pulp with a whiteness of 60%ISO-85%ISO.

[0006] 3. After the coarse pulp is treated by a deflaker, a refiner, a screening machine and a slag remover, it becomes a chlorine-free and pollution-free clean pulp.

[0007] 4. After the pulping waste liquid is filtered by the hollow membrane, it can be reused in the dispensing, washing, scr...

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Abstract

The invention is the pioneering invention in the paper making field, which is characterized by cutting kenaf is into small segments of 2-5cm, soaking the small segments and rolling to form fiber bundles by a thread rolling machine, conveying the fiber bundles to a stainless steel vessel, adopting potassium-based hydrogen peroxide and oxygen to generate hydroxyl free radical and active oxygen free radical with the catalysis of ultraviolet light at the temperature of 80 DEG C, discarding chromophoric group of lignin to form coarse pulp with whiteness being 60%ISO-85%ISO, then forming clean pulp without chlorine or contamination through discongesting, fine grinding, screening and deslagging. The invention is used for producing high-grade paper products such as cigarette paper, decorating paper, currency paper, and the like, and completely solves the two problems of serious contamination from paper making and harm to human body from chloride ion.

Description

technical field [0001] The present invention is a pioneering invention in the field of paper pulping. Background technique [0002] The traditional hemp pulping process has two major pollutions: one is the discharge of "black liquor" formed by pollutants such as COD and BOD; the other is the pollution of "dioxins" produced by bleaching with chlorine-containing chemicals, especially chlorine Bleached hemp pulp cigarette paper, the residual chlorine in the paper and the "dioxin" generated by tobacco organic matter at a certain temperature can easily lead to cancer. Contents of the invention [0003] The technical feature of the present invention is to cut kenaf into 2-5cm small sections, knead them into fiber bundles with a thread rolling machine after soaking, transport them to stainless steel containers, and use potassium-based hydrogen peroxide and oxygen to generate under the catalysis of ultraviolet light and a temperature of 80°C. The hydroxyl radicals and active oxyg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/12D21B1/06D21B1/34D21C9/147D21C3/22
Inventor 李朝旺
Owner 李朝旺
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