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

Bamboo reed dissolving pulp pretreating method

A technology of dissolving pulp and primary processing, applied in the direction of pulping with organic solvents, pulping of cellulose raw materials, non-woody plant/crop pulp, etc., can solve the problems of not exerting economic value, achieve significant environmental protection effects, and improve Effects of Effective Utilization and Capacity Improvement

Active Publication Date: 2014-04-16
新乡市东升新材料有限公司 +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence and restriction of various factors such as environmental protection and unbalanced economic development, the comprehensive utilization of reed bamboo in my country is still at a low level, and a large amount of reed bamboo can only be used as fuel, which has not exerted its due economic value

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Bamboo reed dissolving pulp pretreating method
  • Bamboo reed dissolving pulp pretreating method
  • Bamboo reed dissolving pulp pretreating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (a) Arundos reed is crushed, crushed and cut into sections, with an average length of 3cm;

[0031] (b) washing the reed bamboo sheets, removing mud and dust, and putting them in a pot;

[0032] (c) adding the reed bamboo slices into the hydrolysis solution, soaking them in the solid acid catalyst for 30 minutes, the ratio of the weight of the hydrolysis solution to the weight of the reed bamboo flakes is 1.5:1;

[0033] The weight consumption of solid acid catalyst is 5% of the bamboo tablet;

[0034] The parts by weight of the hydrolyzed solution include:

[0035]

[0036] (d) Then cook all the materials in step (3) at 130°C for 30 minutes;

[0037] (e) Heat up to 160°C and keep for 30 minutes;

[0038] (f) Degassing, collecting the cooking slurry and solid acid catalyst separately, and washing the cooking slurry with water at 80-90°C;

[0039] (g) Add sodium hydroxide solution with a weight concentration of 5% to the cooking slurry, soak for 30 minutes, then c...

Embodiment 2

[0046] (a) Arundos reed is crushed, crushed and cut into sections, with an average length of 5cm;

[0047] (b) washing the reed bamboo sheets, removing mud and dust, and putting them in a pot;

[0048] (c) adding the reed bamboo flakes into the hydrolysis solution, soaking them in the solid acid catalyst for 60 minutes, the ratio of the weight of the hydrolysis solution to the weight of the reed bamboo flakes is 2:1;

[0049] The weight consumption of solid acid catalyst is 15% of the bamboo tablet;

[0050] The parts by weight of the hydrolyzed solution include:

[0051]

[0052] (d) Then cook all the materials in step (3) at 150°C for 60 minutes;

[0053] (e) Heat up to 180°C and keep for 60 minutes;

[0054] (f) Degassing, collecting the cooking slurry and solid acid catalyst separately, and washing the cooking slurry with water at 80-90°C;

[0055] (g) Add sodium hydroxide solution with a weight concentration of 10% to the cooking slurry, soak for 60 minutes, then c...

Embodiment 3

[0062] (a) Arundos reed is crushed, crushed and cut into sections, with an average length of 4cm;

[0063] (b) washing the reed bamboo sheets, removing mud and dust, and putting them in a pot;

[0064](c) adding the reed bamboo flakes into the hydrolysis solution, soaking them in the solid acid catalyst for 50 minutes, the ratio of the weight of the hydrolysis solution to the weight of the reed bamboo flakes is 1.75:1;

[0065] The weight consumption of solid acid catalyst is 10% of the bamboo tablet;

[0066] The parts by weight of the hydrolysis solution include:

[0067]

[0068] (d) Then cook all the materials in step (3) at 140°C for 45 minutes;

[0069] (e) Heat up to 170°C and keep for 50 minutes;

[0070] (f) Deflate and reduce pressure, collect the cooking slurry and solid acid catalyst separately, and wash the cooking slurry with water at 80-90°C;

[0071] (g) Add sodium hydroxide solution with a weight concentration of 8% to the cooking slurry, soak for 45 mi...

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
The average particle sizeaaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a bamboo reed dissolving pulp pretreating method, which comprises the following steps of: (1) adding bamboo reed sheets into hydrolysis solution, and soaking in a solid acid catalyst; (2) cooking all the materials in the step (3) at temperature of 130-150 DEG C for 30-60 minutes; (3) raising the temperature to 160-180 DEG C, and continuously keeping the temperature for 30-60 minutes; (4) respectively collecting the cooked pulp and the solid acid catalyst, and washing the cooked pulp with water with the temperature of 80-90 DEG C; (5) adding sodium hydroxide solution into the cooked pulp, soaking, cooking, and collecting the cooked pulp for two times; and (6) adding sodium thiosulfate and hydrogen dioxide solution into the pulp cooked for two times, then adding water and bleaching, thus obtaining bamboo reed dissolving pulp. With the method, the economic value of the bamboo reed can be fully played, the investment is small, and the process is simple. The pretreating method is especially suitable for pretreating technology at bamboo reed producing places, and a raw material is increased for papermaking, cotton spinning and building materials.

Description

technical field [0001] The invention relates to primary processing technology for comprehensive utilization of reed bamboo production. Background technique [0002] Reed bamboo is widely distributed in my country, from Liaoning in the north to Guangxi in the south, and the most produced are along the seawalls along the river. Reed bamboo has played a unique role in improving the environment and preventing floods and collapses. At the same time, reed bamboo grows fast, has strong adaptability, is easy to reproduce, and has good economic value. However, due to the influence and restriction of various factors such as environmental protection and unbalanced economic development, the comprehensive utilization of reed bamboo in my country is still at a low level, and a large amount of reed bamboo can only be used as fuel, which has not exerted its due economic value . Therefore, using the growing environment and geography of Arundis, improving the economic value of the comprehens...

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
IPC IPC(8): D21H11/12D21C3/20D21C3/22
Inventor 施晓旦郭和森
Owner 新乡市东升新材料有限公司
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