CN103696311A - Office waste paper recycling method - Google Patents

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

A kind of wastepaper reclaiming method

Technical field

The present invention relates to field of Environment Protection, particularly a kind of wastepaper reclaiming method.

Background technology

Relevant investigation shows, it is low that waste paper utilization rate is duplicated in office, and the rate of throwing aside is about 95%.Office copy paper be called as " noble " in paper, but huge profit with aspect be nothing like other stationery.High-quality paper in the office like this is out in the cold, the problem that is far above environment aspect of bringing.For this reason, we have carried out the experimental study of wastepaper regeneration integrated apparatus.By utilization rate and the discarded rate of the copy paper of handling official business on analysis market, the small-sized duplicating society of take in common university is example, the waste paper quality producing because of subjective and objective problems such as reprographies for one week is approximately 6kg, and disperse (as each office disperseing owing to producing waste paper place, duplicate society etc.) and without evident regularity, so system recoveries work difficulty is high.According to estimates, regenerated papermaking can using water wisely 50% compared with timber papermaking, saves energy 60-70%, reduces the pollution 60-70% to atmosphere.National Development and Reform Committee proposes the Eleventh Five-Year Plan of papermaking industry, requires waste paper utilization ratio within 2010, to bring up to 48%, 2015 year to 55%, and wherein domestic waste paper utilization ratio will reach 43%.So in order to reduce costs and to reduce pollution, utilizing regenerated papermaking is the developing direction of paper industry.The advantage that waste paper regenerated integrated apparatus is duplicated in office is that volume is little compared with legacy equipment volume, easy to use, convenient operation, and waste paper 100% reclaims.Discarded paper in the office enters machine from paper feed port, and by inner slurrying part, enzyme-excusing from death ripple is coordinated deinking system, the green bleaching system of ozone-hydrogen peroxide, excusing from death ripple-vibrational system, dress glue laminated is sanctioned and to be cut etc. after flow process, by delivery outlet, exports brand-new paper in the office.This equipment is applicable to school, the field that the paper usings such as enterprise are concentrated.

China is the consumption big country of paper, but the forest reserves lack, afforestation rate only 20.36%, and far below developed country's level, the timber of therefore take can not be ignored as the various ecological environment problems that main material production paper causes; The starting point of China tradition Paper Industry Development is low, and highly energy-consuming, maximum discharge, high pollution, poor efficiency mostly adopt the heavy mechanical equipment of non-environmental protection, are only applicable to extensive production in enormous quantities in enormous quantities; Be called as " noble " in paper office copy paper, huge profit with aspect be but nothing like other stationery.Relevant investigation shows, the utilization rate that waste paper is duplicated in China's office is very low, and the probability of directly being thrown aside is approximately 95%, high-quality paper like this abandoned as carried out, the problem that is far above environment aspect of bringing.

Japanology goes out expensive, build is larger, and the wastepaper that energy consumption is higher utilizes machine, and popularity is not high, as manufacture toilet paper " Aries ", adopt specialty inks and the dry paper deinking device of blue light manufactured etc., there is no office is duplicated to the small-sized integrated equipment that waste paper reproduces into paper in the office;

Other European countries such as the U.S., put into effect and tackle mutually the laws and regulations that waste paper reclaims, and waste paper is implemented to strict classification, its standard is planted up to more than 50, for all kinds of paper products, takes to recycle efficiently means, waste paper recovery utilization rate has reached 93% left and right, temporarily without inventing without relevant small-sized machine.

Summary of the invention

The object of the invention is to provide a kind of wastepaper reclaiming method.

For achieving the above object, the present invention implements according to following technical scheme:

A wastepaper reclaiming method, comprises the steps:

1) get a certain amount of wastepaper in extractor, in 60 ℃ of constant temperature water baths, heat, and add solvent to carry out extracting, after evaporate residual solvent in extracting sample, regulate concentration of slurry to 8%, add the size degradation that carries out waste paper in mixer, the size degradation time is 45min;

2) after broken paper pulp in add SKHZYE-DPE91 biology enzyme to carry out the preliminary treatment before ultrasonic wave deinking;

3) pretreated paper pulp is placed in to ultrasonic cleaner ultrasonic treatment time 10min, it is 40 ℃ that ultrasonic wave treatment temperature is controlled, and ultrasonic wave processing power is 300W, and it is 40kHz that ultrasonic wave is processed frequency, makes the concentration of paper pulp reach 0.5% after processing;

4) pulp density after deinking is adjusted to 10%-12%, and PH reaches 6, and temperature reaches 55 ℃ of left and right;

5) again add the SKHZYE-DPE91 biology enzyme being equipped with, the reaction time is 20min;

6) after cellulase treatment, it is acid that paper pulp is, and PH is 5-7, and temperature is 35 ℃, now starts ozone generator, produces ozone paper pulp is bleached;

7) PH of paper pulp is adjusted to 10, add PH stabilizing agent Na ₂s _io ₃, add appropriate hydrogen peroxide agent, now, heighten temperature and reach 90 ℃, make the further bleached pulp of hydrogen peroxide;

8) paper pulp after bleaching forms wet web by Internet device;

9) press section that wet web enters pressure boot-shaped carries out dehydration forming, makes wet web obtain preliminarily dried;

10) wet web after squeezing enters drying cylinder and dries, and through cutting, obtains finished paper.

As the further preferred version of the present invention, in described step 3) ultrasonic cleaner, add a small amount of sodium metasilicate, NaOH and hydrogen peroxide.

Compared with prior art, the present invention adopts the preconditioning technique of biology enzyme, breaks through the dependence of traditional papermaking to chemical test product; The bleaching technology that adopts tractable hydrogen peroxide-ozone to mix, pollution-free, environmental protection, has reduced the difficulty of wastewater treatment; Improve utilization rate and reduction paper in the office cost that waste paper is duplicated in office, improve the waste paper recovery utilization rate of China, using water wisely and the energy, protection of the environment, can, by each step process apparatus integration, automation, be convenient to promote the use of simultaneously.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment thereof, the invention will be further described, in illustrative examples and the explanation of this invention, is used for explaining the present invention, but not as a limitation of the invention.

Embodiment 1

A wastepaper reclaiming method, comprises the steps:

1) get a certain amount of wastepaper in extractor, in 60 ℃ of constant temperature water baths, heat, and add solvent to carry out extracting, after evaporate residual solvent in extracting sample, regulate concentration of slurry to 8%, add the size degradation that carries out waste paper in mixer, the size degradation time is 45min; In waste paper immersion processes, between waste paper fibre, also can produce gentle friction, improve size degradation effect;

2) after broken paper pulp in add SKHZYE-DPE91 biology enzyme to carry out the preliminary treatment before ultrasonic wave deinking;

3) pretreated paper pulp is placed in to the ultrasonic cleaner ultrasonic treatment time 10min that adds a small amount of sodium metasilicate, NaOH and hydrogen peroxide, it is 40 ℃ that ultrasonic wave treatment temperature is controlled, ultrasonic wave processing power is 300W, it is 40kHz that ultrasonic wave is processed frequency, makes the concentration of paper pulp reach 0.5% after processing; Make fiber surface softening, promote the fibrillating effect of ultrasonic wave to fiber surface;

4) pulp density after deinking is adjusted to 10%, PH and is reached 6, and temperature reaches 50 ℃;

5) again add the SKHZYE-DPE91 biology enzyme being equipped with, the reaction time is 20min;

6) after cellulase treatment, it is acid that paper pulp is, and PH is 5, and temperature is 35 ℃, now starts ozone generator, produces ozone paper pulp is bleached;

7) PH of paper pulp is adjusted to 10, add PH stabilizing agent Na ₂s _io ₃, add appropriate hydrogen peroxide agent, now, heighten temperature and reach 90 ℃, make the further bleached pulp of hydrogen peroxide;

8) paper pulp after bleaching forms wet web by Internet device;

9) press section that wet web enters pressure boot-shaped carries out dehydration forming, makes wet web obtain preliminarily dried;

10) wet web after squeezing enters drying cylinder and dries, and through cutting, obtains finished paper.

Embodiment 2

A wastepaper reclaiming method, comprises the steps:

1) get a certain amount of wastepaper in extractor, in 60 ℃ of constant temperature water baths, heat, and add solvent to carry out extracting, after evaporate residual solvent in extracting sample, regulate concentration of slurry to 8%, add the size degradation that carries out waste paper in mixer, the size degradation time is 45min; In waste paper immersion processes, between waste paper fibre, also can produce gentle friction, improve size degradation effect;

2) after broken paper pulp in add SKHZYE-DPE91 biology enzyme to carry out the preliminary treatment before ultrasonic wave deinking;

3) pretreated paper pulp is placed in to the ultrasonic cleaner ultrasonic treatment time 10min that adds a small amount of sodium metasilicate, NaOH and hydrogen peroxide, it is 40 ℃ that ultrasonic wave treatment temperature is controlled, ultrasonic wave processing power is 300W, it is 40kHz that ultrasonic wave is processed frequency, makes the concentration of paper pulp reach 0.5% after processing; Make fiber surface softening, promote the fibrillating effect of ultrasonic wave to fiber surface;

4) pulp density after deinking is adjusted to 12%, PH and is reached 6, and temperature reaches 55 ℃;

5) again add the SKHZYE-DPE91 biology enzyme being equipped with, the reaction time is 20min;

6) after cellulase treatment, it is acid that paper pulp is, and PH is 7, and temperature is 35 ℃, now starts ozone generator, produces ozone paper pulp is bleached;

7) PH of paper pulp is adjusted to 10, add PH stabilizing agent Na ₂s _io ₃, add appropriate hydrogen peroxide agent, now, heighten temperature and reach 90 ℃, make the further bleached pulp of hydrogen peroxide;

8) paper pulp after bleaching forms wet web by Internet device;

9) press section that wet web enters pressure boot-shaped carries out dehydration forming, makes wet web obtain preliminarily dried;

10) wet web after squeezing enters drying cylinder and dries, and through cutting, obtains finished paper.

Embodiment 3

By of the present invention, make integrated device, can enter the group office spaces such as school, enterprise, select the equipment of following table to make:

Part of appliance	The amount of money (unit)
		Pulper	3000
Concentrated screening plant	300
		Fine grinding device	200
Detect refining device	100
		Ultrasonic wave drubber	3000
Ozone generator	60
		Metering device	100
Paper pulp Internet device	100
		Pressure rolling drying unit	1000
Other devices	1000
		Amount to	8760

The price of using these equipment papermaking is as following table:

Use the inventive method to utilize these equipment recycled paper and the price comparison of common A4 paper:

Common paper mill produces use+a large amount of chemical reagent expenses of paper in the office=log scale expense+labour cost+high profit+wastewater treatment expense+charges for water and electricity;

Use the inventive method to utilize use+a small amount of chemical reagent expense of these device fabrication paper in the office=labour costs+charges for water and electricity;

Above data analysis shows, using the inventive method to utilize 1.21 tons of papers in the office of these device fabrications is recoverable equipment cost, after this, utilizes this to install 1 ton of paper of every production, only from economic aspect, can save 7276.22 yuan.Therefore use the inventive method to utilize these equipment to there is objective Economic Application prospect and market application foreground widely.

Technical scheme of the present invention is not limited to the restriction of above-mentioned specific embodiment, and the technology distortion that every technical scheme according to the present invention is made, within all falling into protection scope of the present invention.

Claims (2)

1. a wastepaper reclaiming method, is characterized in that, comprises the steps:

1) get a certain amount of wastepaper in extractor, in 60 ℃ of constant temperature water baths, heat, and add solvent to carry out extracting, after evaporate residual solvent in extracting sample, regulate concentration of slurry to 8%, add the size degradation that carries out waste paper in mixer, the size degradation time is 45min;

2) after broken paper pulp in add SKHZYE-DPE91 biology enzyme to carry out the preliminary treatment before ultrasonic wave deinking;

3) pretreated paper pulp is placed in to ultrasonic cleaner ultrasonic treatment time 10min, it is 40 ℃ that ultrasonic wave treatment temperature is controlled, and ultrasonic wave processing power is 300W, and it is 40kHz that ultrasonic wave is processed frequency, makes the concentration of paper pulp reach 0.5% after processing;

4) pulp density after deinking is adjusted to 10%-12%, and PH reaches 6, and temperature reaches 55 ℃ of left and right;

5) again add the SKHZYE-DPE91 biology enzyme being equipped with, the reaction time is 20min;

6) after cellulase treatment, it is acid that paper pulp is, and PH is 5-7, and temperature is 35 ℃, now starts ozone generator, produces ozone paper pulp is bleached;

7) PH of paper pulp is adjusted to 10, add PH stabilizing agent Na ₂s _io ₃, add appropriate hydrogen peroxide agent, now, heighten temperature and reach 90 ℃, make the further bleached pulp of hydrogen peroxide;

8) paper pulp after bleaching forms wet web by Internet device;

9) press section that wet web enters pressure boot-shaped carries out dehydration forming, makes wet web obtain preliminarily dried;

10) wet web after squeezing enters drying cylinder and dries, and through cutting, obtains finished paper.

2. wastepaper reclaiming method according to claim 1, is characterized in that: in described step 3) ultrasonic cleaner, add a small amount of sodium metasilicate, NaOH and hydrogen peroxide.