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Office waste paper recycling method

A technology of office waste paper and pulp, which is applied in the direction of paper recycling, processing waste paper, recycling technology, etc., can solve the problem that there is no small-scale integrated equipment for office copying waste paper to recycle office paper, the popularity is not high, and the price is not high. Philippines and other issues, to achieve the effect of facilitating promotion and use, protecting the environment and reducing difficulty

Inactive Publication Date: 2014-04-02
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Japan has developed office waste paper recycling machines that are expensive, large in size, and high in energy consumption, but are not widely popular, such as the "white sheep" that makes toilet paper, and the blue light dry paper deinking machine made with special ink, etc. There is no small-scale integrated equipment that recycles office copy waste paper into office paper;
[0005] The United States and other European countries have promulgated corresponding laws and regulations on waste paper recycling, and implemented strict classification of waste paper, with more than 50 standards. For various paper products, efficient recycling methods have been adopted, and the recycling rate of waste paper has increased. Up to about 93%, there is no related small mechanical invention

Method used

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Experimental program
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Effect test

Embodiment 1

[0023] A method for recycling office waste paper, comprising the steps of:

[0024] 1) Take a certain amount of office waste paper in the extractor, heat it in a constant temperature water bath at 60°C, and add a solvent for extraction. After the residual solvent in the extracted sample evaporates, adjust the concentration of the slurry to 8%, and add The waste paper is shredded in the mixer, and the shredding time is 45 minutes; during the immersion process of the waste paper, gentle friction can also be generated between the waste paper fibers to improve the shredding effect;

[0025] 2) Add SKHZYE-DPE91 biological enzyme to the crushed pulp for pretreatment before ultrasonic deinking;

[0026] 3) Put the pretreated pulp in an ultrasonic cleaning tank with a small amount of sodium silicate, sodium hydroxide and hydrogen peroxide for ultrasonic treatment for 10 minutes, control the ultrasonic treatment temperature at 40°C, and ultrasonic treatment power of 300W. The frequenc...

Embodiment 2

[0035] A method for recycling office waste paper, comprising the steps of:

[0036] 1) Take a certain amount of office waste paper in the extractor, heat it in a constant temperature water bath at 60°C, and add a solvent for extraction. After the residual solvent in the extracted sample evaporates, adjust the concentration of the slurry to 8%, and add The waste paper is shredded in the mixer, and the shredding time is 45 minutes; during the immersion process of the waste paper, gentle friction can also be generated between the waste paper fibers to improve the shredding effect;

[0037] 2) Add SKHZYE-DPE91 biological enzyme to the crushed pulp for pretreatment before ultrasonic deinking;

[0038] 3) Put the pretreated pulp in an ultrasonic cleaning tank with a small amount of sodium silicate, sodium hydroxide and hydrogen peroxide for ultrasonic treatment for 10 minutes, control the ultrasonic treatment temperature at 40°C, and ultrasonic treatment power of 300W. The frequenc...

Embodiment 3

[0047] Through the integrated device of the present invention, it can enter group office places such as schools and enterprises, and it can be made by selecting the equipment in the following table:

[0048] equipment parts

Amount (yuan)

pulper

3000

Concentration and screening device

300

Refining device

200

Detecting the refining device

100

Ultrasonic deinking device

3000

Ozone generator

60

Metering device

100

Pulp online device

100

Press drying device

1000

other devices

1000

total

8760

[0049] The price of using these equipment to make paper is as follows:

[0050]

[0051] Use the inventive method to utilize these equipment remanufactured papers and common A4 paper price comparison:

[0052]

[0053] Ordinary paper mills produce office paper = raw wood cost + labor cost + high profit + waste water treatment cost + water and electr...

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Abstract

The invention discloses an office waste paper recycling method.Qualified office paper is recycled by disintegrating, pulping, deinking, bleaching, pressing, drying and cutting. Compared with the prior art, the office waste paper recycling method adopts the bio-enzyme preprocessing technology to break through the dependency of the traditional paper making on chemical products, decreases the application of chemical reagents through the bio-enzyme and ultrasonic-wave synergic deinking technology, adopts the treatable hydrogen peroxide-ozone mixed bleaching technology to achieve the advantages of no pollution, environmental friendliness and reduced difficulty of the waste water treatment, improves the utilization rate of office copy waste papers and the recycling rate of the waste papers, reduces the cost of the office papers, saves water and energy, protects the environment, can integrate and automate all step treatment devices, and is convenient to promote and apply.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a method for recycling office waste paper. Background technique [0002] Relevant surveys show that the utilization rate of office copy waste paper is low, and the disposal rate is about 95%. Office copy paper is known as the "nobility" of paper, but it is far inferior to other papers in terms of reuse. The neglect of such high-quality office paper has caused far more than environmental problems. To this end, we conducted an experimental study on an integrated device for recycling office waste paper. By analyzing the usage rate and waste rate of office copy paper in the market, taking a small copy agency in an ordinary university as an example, the quality of waste paper produced due to subjective and objective problems such as copy technology is about 6kg a week, and due to the scattered locations of waste paper ( Such as scattered offices, copying agencies, etc.) and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/02D21C5/00
CPCY02W30/64
Inventor 孙超伦刘蔚郝豫吴亚伟戴俊韦柳屾刘荣荣马进玲
Owner HENAN POLYTECHNIC UNIV
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