Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of bamboo dissolving pulp

A technology for dissolving pulp and bamboo pulp, applied in pulp bleaching, pulp property modification, post-processing of cellulose pulp, etc., can solve the problem of high hemicellulose and ash content, high impurity content of bamboo dissolving pulp, and low average molecular weight of cellulose and other problems, to achieve the effect of low hemicellulose and ash content, high molecular weight and good uniformity

Pending Publication Date: 2021-08-03
SICHUAN TECH & BUSINESS COLLEGE
View PDF14 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the production of bamboo dissolving pulp adopts the traditional production process of using wood as the fiber raw material to produce dissolving pulp. The bamboo dissolving pulp produced has high impurity content, low cellulose content, high hemicellulose and ash content, and uniform fiber length. Poor resistance, low average molecular weight of cellulose and wide distribution range, poor reactivity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides a method of preparing a bamboo solubilic gel, comprising the steps of:

[0029] (1) Native bamboo paste: Potamotogen is a bamboo pulp, which is 25; use high-frequency slot machine or double-disc grind to discovery, by disbanding the slurry, the fiber bundle is dispersed, and after discovery The slurry is added to the concentration to 0.5% to 3.5%, and the sieve purification process is sent.

[0030] (2) Slurry screen purification: screening twice, first remove 10% of the coarse fiber portion in the slurry, then remove 20% detailed division by screening, by sieving the coarse fiber portion separated And fine components can be used to produce ordinary paper, and the slurry concentration of 1.5% in the screening process is purified by purifying the slurry after the screening to remove mud, iron, and the iron-free impurities such as iron, and then concentrate the slurry. The concentration is 25%, and the sulfonic acid treatment process is sent.

[0031]...

Embodiment 2

[0036] This embodiment provides a method of preparing a bamboo solubilic gel, comprising the steps of:

[0037] (1) Normal color bamboo paste: the rander uses the true bamboo pulp, which is 20; use high-frequency slightly separation machine or double-disc grind to discovery, by disbanding the slurry, the fiber bundle is dispersed, and after disconnection The slurry is added to the concentration to 0.5% to 3.5%, and the sieve purification process is sent.

[0038] (2) Slurry screening: Screening twice, first remove 5% of the coarse fiber portion in the slurry, then remove 25% thin part of the 50% sieve, the coarse fiber portion of the sieved separation and fine The small component can be used to produce ordinary paper, the slurry concentration of 2% in the screening process, the sieve slurry is purified to remove mud, iron in the mud, iron, etc., then concentrate the slurry, make the concentration A 30%, which is sent to the sulfonic acid treatment process.

[0039] (3) Sulk sulfon...

Embodiment 3

[0044] This embodiment provides a method of preparing a bamboo solubilic gel, comprising the steps of:

[0045] (1) Native bamboo paste: Potamotogen is a bamboo pulp, which is 25; use high-frequency slot machine or double-disc grind to discovery, by disbanding the slurry, the fiber bundle is dispersed, and after discovery The slurry is added to the concentration to 0.5% to 3.5%, and the sieve purification process is sent.

[0046] (2) Slurry screening: Screening twice, first remove 10% of the coarse fiber portion in the slurry, then remove 30% thin component with fine screen, by sieving the coarse fiber portion and fine The small component can be used to produce ordinary paper, the slurry concentration of 3% in the screening process, the sieve slurry is purified to remove mud, iron, etc., the iron, the slurry is concentrated, and the concentration A 30%, which is sent to the sulfonic acid treatment process.

[0047] (3) Sulk sulfonic acid treatment: sulfonic acid treatment in a cl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
whitenessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of bamboo dissolving pulp, and belongs to the technical field of bamboo dissolving pulp. The method comprises the following steps: (1) defibering bamboo pulp to obtain pulp with the mass concentration of 0.5-3.5%; (2) screening and purifying the slurry, removing rough and fine fibers, and removing non-fibrous impurities in the slurry; (3) performing sulfonic acid treatment on the slurry; (4) performing caustic soda treatment on the slurry; and (5) feeding the bleached pulp into a pulp board machine for papermaking to prepare a pulp board. According to the process, three key technologies of screening purification, sulfonic acid treatment and caustic soda treatment are combined, so that the bamboo dissolving pulp with high cellulose purity, large molecular weight, uniform distribution and good reaction performance can be produced; meanwhile, the resource utilization rate is high, and pollution emission is low.

Description

Technical field [0001] The present invention belongs to the field of bamboo solubility, and is specifically related to the preparation method of bamboo solubility. Background technique [0002] The dissolved slurry is the main raw material for producing regenerated cellulose and cellulose derivatives. This product is similar to the ordinary pulp, but it is much higher than that of ordinary pulp is high, the earliest production of solubilized gel is cotton velvet, Its cellulose content is high, less impurities, is the best raw material for the production of solubol. However, due to the decline in cotton production, the demand for dissolving hypothals is increasing, and the cotton short supply cannot meet the demand for solubol. [0003] With the maturity and improvement of pulping technology, the timber raw materials are successful for dissolving hypothals, which meets the rapid growth of solubilization market, which has become the main raw material for the production of solubol, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/20D21C9/00D21C9/147D21C9/14D21C9/16
CPCD21H11/20D21C9/004D21C9/147D21C9/144D21C9/163
Inventor 刘一山李桂芳朱友胜张玉红刘连丽余勇罗敏
Owner SICHUAN TECH & BUSINESS COLLEGE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com