Preparation method of bamboo fiber pulp

A technology of bamboo fiber pulp and pulp, which is applied in the field of papermaking, can solve the problems that the average fiber quality cannot meet the needs of high-end products, the number of recycling of national waste is high, and the resources of OCC waste paper are limited, etc., so as to achieve excellent chemical resistance and reduce The effect of papermaking cost and low price

Pending Publication Date: 2022-07-12
JIAN GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the import of foreign waste has been completely banned in China, but domestic OCC waste paper resources are limited, and due to the high number of domestic waste recycling, the average fiber quality cannot meet the needs of high-end products. In order to solve the problem of domestic raw material shortage, the fiber raw materials are diversified to become packaging paper. business imperatives

Method used

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  • Preparation method of bamboo fiber pulp
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Experimental program
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Effect test

Embodiment 1

[0031] A kind of preparation method of bamboo fiber pulp in the present embodiment, comprises the following steps:

[0032] 1) Screening treatment: The raw materials are first added to the disc sieve, the larger debris is removed, and the pieces screened by the disc sieve are added to the vibrating screen machine to screen out the large pieces, and the large pieces are cut. After treatment, then after screening, the qualified bamboo chips are screened out;

[0033] 2) Steaming preheating: After adding the bamboo chips to the tablet processor for cleaning, dewatering by the screw dehydrator, and then crushing by the hammer crusher to obtain coarse pulp, which is transported to the steaming bin by the heating screw conveyor Preheating, the coarse pulp is heated and heated under the action of steam, preheated for 2 minutes, and the outlet temperature of the coarse pulp after preheating is 65 °C;

[0034] 3) High-consistency mill: add the coarse pulp to the heating screw conveyor...

Embodiment 2

[0038] A kind of preparation method of bamboo fiber pulp in the present embodiment, comprises the following steps:

[0039] 1) Screening treatment: The raw materials are first added to the disc sieve, the larger debris is removed, and the pieces screened by the disc sieve are added to the vibrating screen machine to screen out the large pieces, and the large pieces are cut. After treatment, then after screening, the qualified bamboo chips are screened out;

[0040] 2) Steaming preheating: After adding the bamboo chips to the tablet processor for cleaning, dewatering by the screw dehydrator, and then crushing by the hammer crusher to obtain coarse pulp, which is transported to the steaming bin by the heating screw conveyor Preheating, the brown pulp is heated and heated under the action of steam, preheated for 15 minutes, and the outlet temperature of the brown pulp after preheating is 85 °C;

[0041] 3) High-consistency mill: add the coarse pulp to the heating screw conveyor ...

Embodiment 3

[0045] A kind of preparation method of bamboo fiber pulp in the present embodiment, comprises the following steps:

[0046] 1) Screening treatment: The raw materials are first added to the disc sieve, the larger debris is removed, and the pieces screened by the disc sieve are added to the vibrating screen machine to screen out the large pieces, and the large pieces are cut. After treatment, then after screening, the qualified bamboo chips are screened out;

[0047] 2) Steaming preheating: After adding the bamboo chips to the tablet processor for cleaning, dewatering by the screw dehydrator, and then crushing by the hammer crusher to obtain coarse pulp, which is transported to the steaming bin by the heating screw conveyor Preheating, the coarse pulp is heated and heated under the action of steam, preheated for 5 minutes, and the outlet temperature of the coarse pulp after preheating is 70 °C;

[0048] 3) High-consistency mill: Add the coarse pulp to the heating screw conveyor...

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Abstract

The invention provides a preparation method of bamboo fiber pulp, and belongs to the technical field of papermaking. The method comprises the following steps: 1) treating a sieve piece; 2) steaming and preheating: cleaning, dehydrating and disintegrating the bamboo chips, and conveying coarse pulp to a steaming bin for preheating; 3) high-concentration grinding: after preheating, adding liquid caustic soda and grinding into slurry to prepare a slurry suspension; 4) low-concentration grinding: diluting the slurry in the reaction tower, dehydrating, pulping, and then separating and brooming the slurry under the rubbing and dispersing action of a disc mill; and (5) screening and removing impurities. According to the method, lignin is heated and softened in a low-alkali environment, then lignin is separated through a mechanical effect, lignin is decomposed through a chemical effect and the like, 'confinement 'of lignin on cellulose and hemicellulose is opened, the cellulose and the hemicellulose are liberated, and the bamboo fiber pulp capable of being used for papermaking is formed.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and relates to a preparation method of bamboo fiber pulp. Background technique [0002] China's waste paper import policy has undergone major changes since 2017, and the policy has continued to be tightened since 2018. At present, the import of foreign waste has been completely banned in China, but domestic OCC waste paper resources are limited, and due to the high number of domestic waste recycling, the average fiber quality cannot meet the demand for high-end products. In order to solve the problem of shortage of domestic raw materials, the diversification of fiber raw materials has become packaging paper business imperative. [0003] By using bamboo resources and other low-alkali pulping to produce high-quality bamboo fiber pulp as fiber supplement, high-quality bamboo fiber raw materials can partially replace national waste Class A or American waste, effectively solving the problem of sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/12D21B1/34D21C7/00D21D1/30D21D5/02
CPCD21H11/12D21B1/345D21C7/00D21D1/30D21D5/02Y02W30/64
Inventor 杨家万王宝辉刘涛姜艳春贾灵波谭英
Owner JIAN GRP
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