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Papermaking process flow for recycling waste newspaper and magazines

A technology of process flow and waste newspaper, which is applied in the field of papermaking, can solve the problems of waste of resources, pollution of the environment, etc., and achieve the effects of energy saving, cost reduction, and significant social and economic benefits

Inactive Publication Date: 2010-04-07
HANGZHOU BANQIAO PAPER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A large amount of waste newspapers and magazines will be produced in the whole country every year. If they are not recycled, it will not only pollute the environment, but also cause a waste of resources.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The papermaking process for the recycling of waste newspapers and magazines: First, the paper selection process: select cardboard paper, kraft paper, playing card paper, and double-sided adhesive paper, so that office waste paper ≤60%, books and magazines ≤30%, miscellaneous paper Content ≤0.5%;

[0016] 2. Waste paper water shredding process: use office waste paper ≤60%, books and magazines ≤30%, miscellaneous paper and sundries ≤0.5% through a high-consistency pulper, and use 2.5-2.7 tons of paper (air-dried) per cylinder. The temperature of hot white water is 65-70℃, the amount of pulped white water is 7 cubic meters, and the pulp concentration is 15-17%; then put in chemical deinking agent for deinking treatment, liquid caustic soda 0.95%, water glass 2.2%, chelating agent 0.2% , Deinking agent 0.5-0.788%, hydrogen peroxide 1.85%, and then enter the coarse slurry tank through the coarse separator.

[0017] 3. Screening process: Separate ink particles, stickies and other...

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PUM

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Abstract

The invention relates to a papermaking process flow for recycling waste newspaper and magazines, belonging to the papermaking technology field, in particular to a papermaking process flow for recycling waste newspaper and magazines; in the invention, the waste newspaper and magazines are recycled by paper sorting, waste paper water granulation, screening, washing and blanching, internal starching and papermaking procedures. The method can effectively recycle the waste newspaper and magazines, and the quality of the manufactured finished paper is accord with requirements; the cost is reduced and the energy is saved, thereby radically solving the paper regeneration technology and having remarkable social and economic benefits.

Description

Technical field: [0001] The invention belongs to the technical field of papermaking, and particularly relates to a papermaking process for recycling waste newspapers and magazines. Background technique: [0002] Every year, a large number of waste newspapers and magazines will be produced throughout the country. If they are not recycled, they will not only pollute the environment but also waste resources. Summary of the invention: [0003] The invention provides a papermaking process method for recycling waste newspapers and magazines. [0004] The present invention is realized through the following technical solutions: a papermaking process for recycling waste newspapers and magazines, which is characterized by its steps: [0005] 1. Paper selection process: [0006] 2. Waste paper water shredding process: firstly mix office waste paper ≤60%, books and magazines ≤30%, miscellaneous paper and sundries ≤0.5% and then mechanically disintegrate, and then deink with chemical deinking agen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/14D21C5/02D21B1/00D21B1/04D21H17/28
CPCY02W30/64
Inventor 喻涛军
Owner HANGZHOU BANQIAO PAPER IND