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Method for pulping and making paper by using eucalyptus bark

A technology of eucalyptus bark and bark, which is applied in the field of papermaking from eucalyptus bark, can solve the problems of excessive sewage, high cost of papermaking, difficulty in resource collection, classification, distribution and use, etc., and achieve reduction of environmental pollution, low cost, and high-tech Practical and Feasible Effects

Inactive Publication Date: 2013-04-10
梁锋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wood is the most important and high-quality material for papermaking. The most commonly used methods for wood pulping are (a) mechanical refining; (b) semi-chemical refining; (c) chemical refining, all of which have high energy consumption or pollution Disadvantages such as large amount of waste discharge make the cost of papermaking high and the environment is under great pressure; the cost of herb pulping is low, but the fiber quality is poor and the sewage is large, which is currently the most popular variety in China; waste paper recycling is economical, environmentally friendly and economical. resources, etc., but there are also many difficulties in resource collection, classification, distribution, and use. It needs continuous improvement in social habits and environmental protection legislation to increase its recovery rate and utilization level.

Method used

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  • Method for pulping and making paper by using eucalyptus bark

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Experimental program
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Effect test

Embodiment 1

[0034] Present embodiment carries out papermaking utilization analysis explanation with Eucalyptus urophylla bark, utilizes the method for making corrugated paper from Eucalyptus urophylla bark, as figure 1 shown, including the following steps:

[0035] 1) The bark is removed from impurities, and then broken into filaments. After the bark is broken, the bark particles are extracted with hot water at 60°C to remove the soluble matter in the bark;

[0036] 2) Alkali treatment of broken bark;

[0037] 3) The bark after alkali treatment is subjected to high-consistency grinding to form coarse pulp with a concentration of 5%; then disc grinding is performed to form bark fiber pulp;

[0038] 4) Mixing bark fiber pulp and recycled pulp at a volume ratio of 0.1:1 to obtain mixed pulp;

[0039] 5) Mix the pulp for paper sheet making, dehydration, pressing and drying, and finally arrange it into paper.

[0040] Analysis table for making corrugated paper from eucalyptus bark

[0041]...

Embodiment 2

[0043] Present embodiment carries out papermaking utilization analysis explanation with Eucalyptus urophylla bark, utilizes the method for making corrugated paper from Eucalyptus urophylla bark, as figure 1 shown, including the following steps:

[0044] 1) The bark is removed from impurities, and then broken into filaments. After the bark is broken, the bark particles are extracted with 80°C hot water to remove the soluble matter in the bark;

[0045] 2) Alkali treatment of bark particles;

[0046] 3) The bark after alkali treatment is subjected to high-consistency grinding to form coarse pulp with a concentration of 15%; then disc grinding is performed to form bark fiber pulp;

[0047] 4) Mixing bark fiber pulp and recycled pulp at a volume ratio of 0.5:1 to obtain mixed pulp;

[0048] 5) Mix the pulp for paper sheet making, dehydration, pressing and drying, and finally arrange it into paper.

[0049] Analysis table for making corrugated paper from eucalyptus bark

[0050...

Embodiment 3

[0052] Present embodiment carries out papermaking utilization analysis explanation with Eucalyptus urophylla bark, utilizes the method for making corrugated paper from Eucalyptus urophylla bark, as figure 1 shown, including the following steps:

[0053] 1) Remove impurities from the bark, and then break it into flakes. After breaking the bark, extract the bark particles with 100°C hot water to remove the soluble matter in the bark;

[0054] 2) Alkali treatment of bark particles;

[0055] 3) The bark after alkali treatment is subjected to high-consistency grinding to form coarse pulp with a concentration of 35%; then disc grinding is performed to form bark fiber pulp;

[0056] 4) Mix bark fiber pulp and recycled pulp at a volume ratio of 1:1 to obtain mixed pulp;

[0057] 5) Mix the pulp for paper sheet making, dehydration, pressing and drying, and finally arrange it into paper.

[0058] Analysis table for making corrugated paper from eucalyptus bark

[0059] [001...

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Abstract

The invention discloses a method for pulping and making paper by using eucalyptus bark. In the method, the eucalyptus bark is directly used for producing corrugated paper by crushing, alkaline treatment and pulp grinding; the crushed eucalyptus bark is directly used for producing high-grade corrugated paper after colored substances in the bark are extracted and the processes such as the alkaline treatment, the pulp grinding and the like are performed; and after the colored substances in the bark are extracted, colorless pulp is ground by the processes such as steaming, decolorizing, bleachingand the like for producing white paper. Forest product waste is changed into things of value to create a new process and develop and a new resource; the process is practical and feasible and can be performed in the normal papermaking factories and fiber manufacturers; the forest product waste which pollutes the environment is used for reducing environmental pollution; the incomes of forest workers and peasants are increased by selling the bark; and the method can be used for producing a high-grade pulp material, has low cost and can realize both social benefit and economic benefit of production enterprises.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a method for making paper from eucalyptus bark. Background technique [0002] Papermaking is one of the four great inventions in China. At present, the main raw materials for papermaking in the world are: (1) wood; (2) herbs; (3) waste paper recycling. Wood is the most important and high-quality material for papermaking. The most commonly used methods for wood pulping are (a) mechanical refining; (b) semi-chemical refining; (c) chemical refining, all of which have high energy consumption or pollution Disadvantages such as large amount of waste discharge make the cost of papermaking high and the environment is under great pressure; the cost of herb plant pulping is low, but the fiber quality is poor and the discharge of sewage is large, which is currently the most popular variety in China; waste paper recycling is economical, environmentally friendly and economical. However, there are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21B1/34D21C3/02D21D1/20
Inventor 梁锋
Owner 梁锋
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