Method for producing hard fiberboard through paper mill sludge

A technology of hard fiberboard and papermaking sludge, applied in fiberboard, papermaking, textiles and papermaking, etc., can solve the problems of low strength, limited supply of short fibers, large dosage, etc., meet the requirements of strength and distortion, and enhance production Degree of cross-linking, the effect of eliminating odor

Active Publication Date: 2014-04-09
JIACHENG ENVIRONMENTAL PROTECTION ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The medium-density fiberboard involved in the publication of the invention patent application with the application number 201120287116.X not only lacks the sludge odor treatment process, but also needs to add more textile fiber waste (5-30%) to the sludge. The amount is large, and the product is limited by the raw materials of textile fiber waste; the cardboard involved in the utility model patent 200920061449.3 has low strength and is suitable for making packing boxes and packing boxes; The strength of the cardboard is properly improved, but the dosage of short fibers is large, and the production is easily limited by the supply of short fibers. At the same time, the nature of the product belongs to the boxboard category, which is only suitable for industrial packaging, etc., not suitable for decorative inner panels, furniture manufacturing, etc. and other appl...

Method used

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  • Method for producing hard fiberboard through paper mill sludge
  • Method for producing hard fiberboard through paper mill sludge
  • Method for producing hard fiberboard through paper mill sludge

Examples

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Embodiment 1

[0031] The method for utilizing papermaking sludge to produce hard fiberboard comprises the following process steps:

[0032] A. Deodorization: add a deodorant to the papermaking sludge for oxidation and deodorization. The deodorant used is chlorine dioxide, the oxidation time is 15 minutes, and the dosage of each agent is 5mg / L;

[0033] B, homogenization: insert crude fiber into the treated sludge in step A and stir to make a slurry evenly, and the mass percentage of crude fiber in the sludge is 0.06%;

[0034] C, forming: placing the slurry made in step B in a fiberboard forming equipment to form a fiberboard;

[0035] D. Drying: The fiberboard formed in step C is dried and shaped under high temperature and high pressure.

[0036] The crude fiber in the step B is selected from textile waste or waste cotton or leftover fiber produced in the production of luggage, and the single length of the crude fiber in the step B is 0.05-20cm.

[0037] In the step D, the drying tempera...

Embodiment 2

[0042] The method for utilizing papermaking sludge to produce hard fiberboard comprises the following process steps:

[0043] A. Deodorization: add a deodorant to the papermaking sludge for oxidation and deodorization. The deodorant used is hydrogen peroxide, the oxidation time is 30 minutes, and the dosage of the agent is 20mg / L;

[0044] B, homogenization: insert crude fiber into the treated sludge in step A and stir evenly to make slurry, the mass percentage of crude fiber accounting for sludge is 1.2%;

[0045] C, forming: placing the slurry made in step B in a fiberboard forming equipment to form a fiberboard;

[0046] D. Drying: The fiberboard formed in step C is dried and shaped under high temperature and high pressure.

[0047]The crude fiber in the step B is selected from textile waste or waste cotton or leftover fiber produced in the production of luggage, and the single length of the crude fiber in the step B is 0.05-20cm.

[0048] In the step D, the drying temper...

Embodiment 3

[0054] The method for utilizing papermaking sludge to produce hard fiberboard comprises the following process steps:

[0055] A. Deodorization: add a deodorant to the papermaking sludge for oxidation and deodorization. The deodorant used is ozone, the oxidation time is 25 minutes, and the dosage of the agent is 15mg / L;

[0056] B, homogenization: insert crude fiber into the treated sludge in step A and stir evenly to make slurry, the mass percentage of crude fiber accounting for sludge is 1%;

[0057] C, forming: placing the slurry made in step B in a fiberboard forming equipment to form a fiberboard;

[0058] D. Drying: The fiberboard formed in step C is dried and shaped under high temperature and high pressure.

[0059] The crude fiber in the step B is selected from textile waste or waste cotton or leftover fiber produced in the production of luggage, and the single length of the crude fiber in the step B is 0.05-20cm.

[0060] In the step D, the drying temperature is 170°...

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Abstract

The invention belongs to paper mill sludge treatment, and particularly relates to a method for producing a hard fiberboard through paper mill sludge. The method comprises the process steps of deodorization, pulp homogenizing, forming, drying and the like. The method solves the problems that in the prior art, the process is complex, cost is high and the environmental protection performance of products is poor. The method has the advantages of being capable of effectively utilizing industrial waste and low in production cost, enabling the products to meet the requirements of national standards, being good in environmental protection performance and low in price and the like.

Description

technical field [0001] The invention belongs to the treatment of papermaking sludge, in particular to a method for producing hard fiber boards by using papermaking sludge. Background technique [0002] With the continuous development of the paper industry, the treatment of papermaking wastewater has attracted increasing attention. Due to the large amount of fibrous substances in the papermaking wastewater, the sludge produced in the papermaking wastewater treatment is large and difficult to degrade. At present, the treatment method of papermaking sludge is still mainly landfill. , This method occupies a large area, and improper handling is likely to cause secondary pollution. [0003] The method of using papermaking sludge to produce fiberboard creates an economical and environmentally friendly treatment and disposal method for papermaking sludge terminal treatment, which not only solves the environmental pollution problem caused by papermaking sludge, but also realizes reso...

Claims

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Application Information

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IPC IPC(8): D21J1/18D21H17/01
Inventor 栗勇田杨占鸿王晓磊冉慧英赵一宁
Owner JIACHENG ENVIRONMENTAL PROTECTION ENG CO LTD
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