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Method for making paper from wheat straw and bagasse

A technology of bagasse and wheat straw, applied in the field of paper manufacturing, can solve the problems of low utilization rate of plant fiber raw materials, restricting the development of paper manufacturing, poor physical properties of paper, etc. effect of gloss

Active Publication Date: 2019-04-19
金凤凰纸业(孝感)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the utilization rate of plant fiber raw materials is low, and the physical properties of the prepared paper are poor, and the gloss is low, which limits the further development of using it to make paper

Method used

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  • Method for making paper from wheat straw and bagasse

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for making paper from wheat straw and bagasse, comprising the steps of:

[0028] 1. Weighing raw materials: wheat straw, bagasse and rice bud powder, cleaning the raw materials and pulping; in parts by weight, 17 parts of wheat straw, 45 parts of bagasse, and 1 part of rice bud powder;

[0029] 2. Add sodium hydroxide and water, cook for 1 hour, the cooking pressure is 0.3Mpa, the temperature is 150-160°C, wash; add 60g of sodium hydroxide per 1kg of raw materials, the solid-liquid ratio is 1:11;

[0030] 3. Add sodium hypochlorite and stir for 5 minutes; add 10 mmol of sodium hypochlorite per 1 kg of raw material;

[0031] 4. Add casein and cellulase, and react for 30 minutes; add 0.11umol of cellulase and 5g of casein per 1kg of raw material; 5. Raise the temperature to 48-52°C, and beat to a beating degree of 60°±2SR to obtain a slurry;

[0032] 6. Add alum and glyceryl stearate, heat up to 60-70°C and react for 40 minutes, mix evenly; add 90g of alum and 2...

Embodiment 2

[0037] A method for making paper from wheat straw and bagasse, comprising the steps of:

[0038] 1. Weighing raw materials: wheat straw, bagasse and rice bud powder, cleaning the raw materials and pulping; in parts by weight, 15 parts of wheat straw, 40 parts of bagasse, and 1 part of rice bud powder;

[0039] 2. Add sodium hydroxide and water, cook for 1 hour, the cooking pressure is 0.2Mpa, the temperature is 100-200°C, wash; add 50g of sodium hydroxide per 1kg of raw materials, the solid-liquid ratio is 1:10;

[0040] 3. Add sodium hypochlorite and stir for 3 minutes; add 10 mmol of sodium hypochlorite per 1 kg of raw material;

[0041] 4. Add casein and cellulase, and react for 20 minutes; add 0.1umol of cellulase and 3g of casein per 1kg of raw materials; 5. Raise the temperature to 45-55°C, and beat to a beating degree of 60°±2SR to obtain a slurry;

[0042] 6. Add alum and glyceryl stearate, heat up to 60-70°C and react for 30 minutes, mix well; add 80g of alum and 10g...

Embodiment 3

[0047] A method for making paper from wheat straw and bagasse, comprising the steps of:

[0048] 1. Weighing raw materials: wheat straw, bagasse and rice bud powder, cleaning the raw materials and pulping; in parts by weight, 18 parts of wheat straw, 50 parts of bagasse, and 1 part of rice bud powder;

[0049] 2. Add sodium hydroxide and water, cook for 3 hours, the cooking pressure is 0.5Mpa, the temperature is 100-200°C, wash; add 80g of sodium hydroxide per 1kg of raw materials, the solid-liquid ratio is 1:12;

[0050] 3. Add sodium hypochlorite and stir for 10 minutes; add 10 mmol of sodium hypochlorite per 1 kg of raw material;

[0051] 4. Add casein and cellulase, and react for 40 minutes; add 0.12umol of cellulase and 8g of casein per 1kg of raw materials; 5. Raise the temperature to 45-55°C, and beat to a beating degree of 60°±2SR to obtain a slurry;

[0052] 6. Add alum and glyceryl stearate, heat up to 60-70°C and react for 50 minutes, mix well; add 100g of alum and...

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Abstract

The invention discloses a method for producing a paper from wheat straw and bagasse. The method comprises weighing wheat straw, bagasse and rice bud powder as raw materials, washing the raw materials, carrying out pulping, adding sodium hydroxide and water into the pulp, carrying out stewing for 1 to 3h, carrying out washing, adding sodium hypochlorite into the pulp, carrying out stirring for 3 to 10min, adding casein and cellulase into the mixture, carrying out a reaction process for 20 to 40min, carrying out heating to 45 to 55 DEG C, carrying out beating to obtain slurry, adding alum and glycerol stearate into the slurry, heating the mixture to 60 to 70 DEG C for a reaction for 30 to 50min, carrying out uniform mixing, and carrying out squeezing, dehydration and drying on the paper pulp. The method can prepare a non-bleached paper from plant fiber raw materials, realize change of wastes into valuables and promote environmental protection.

Description

technical field [0001] The invention relates to a method for making paper by using wheat straw and bagasse, which belongs to the field of non-wood fiber paper. Background technique [0002] With the increase of paper consumption, the problem of cutting down trees is becoming more and more serious, which has a great impact on people's living environment. At present, in the paper preparation process, a three-stage method is usually used to oxidize bleached wood pulp: [0003] In the first stage of chlorination, the pulp is passed through chlorine gas, most of the residual lignin is converted into chlorinated lignin, and the dissolved chlorinated lignin is washed and removed. [0004] The second stage of alkali treatment is to further clean the pulp and adjust the pH of the pulp. [0005] In the third stage of bleaching, since oxidative delignification is more effective than chlorinated delignification, the oxidation method is used to remove lignin more effectively. [0006]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H11/12D21C5/00D21C3/02D21C3/18D21H17/66D21H17/43D21H21/14
CPCD21C3/02D21C3/18D21C5/005D21H11/12D21H17/43D21H17/66D21H17/74D21H21/14
Inventor 齐永怡
Owner 金凤凰纸业(孝感)有限公司