Pretreatment process for producing bamboo fibers with bamboos

A pretreatment and bamboo fiber technology, which is applied in the direction of fiber raw material treatment, pretreatment with alkaline compounds, finely split raw material pretreatment, etc., can solve the problems of large hydrogen peroxide consumption and long bleaching process time, and achieve saving Effects of steam and medicine, shortened reaction time, and reduced dosage

Inactive Publication Date: 2012-03-14
TIANJIN ZIWEI TAIKE PLANT FIBER TECH
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the severe "alkali dark color" reaction, the difficulty of bleaching the pulp has been increased, which

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
  • Pretreatment process for producing bamboo fibers with bamboos
  • Pretreatment process for producing bamboo fibers with bamboos

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] Example 1

[0013] The pretreatment process for producing bamboo fiber from bamboo is as follows: first cut the whole bamboo into 2m length, wash away the soil and impurities with water, and crush it into 1.5t bamboo slices with a maximum diameter of 2cm or 3cm in length after screening.

[0014] Add 6t of soaking water to the soaking tank, then add 60Kg of NaOH and 45g of biological enzyme. The biological enzyme is a mixture of laccase and xylanase, including 30g laccase and 15g xylanase.

[0015] The water in the soaking pool is heated to 60-80°C, the bamboo chips are put in, soaked for 4 hours, and then removed, and then shredded into filaments by a separating machine for pulping.

[0016] The soaking water is reused after precipitation and membrane treatment.

[0017] The comparison between the bamboo chips treated in Example 1 and the bamboo chips treated by conventional hydrolysis in the post-bleaching stage is as follows:

[0018]

Example Embodiment

[0019] Example 2

[0020] The pretreatment process for producing bamboo fiber from bamboo is as follows:

[0021] The pretreatment process for producing bamboo fiber from bamboo is as follows: first cut the whole bamboo into 2m length, wash away the soil and impurities with water, and crush it into 1.5t bamboo slices with a maximum diameter of 2cm or 3cm in length after screening.

[0022] Add 9t of soaking water to the soaking tank, then add 360Kg of NaOH and 105g of biological enzyme. The biological enzyme is a mixture of laccase and xylanase, of which 75g laccase and 30g xylanase.

[0023] The water in the soaking pool is heated to 60-80°C, the bamboo slices are put in, soaked for 8 hours, and then removed, and then shredded into filaments by a splitter to make pulp.

[0024] The soaking water is reused after precipitation and membrane treatment.

[0025] The comparison between the bamboo chips treated in Example 2 and the bamboo chips treated by conventional hydrolysis in the post-bl...

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

No PUM Login to view more

Abstract

The invention provides a pretreatment process for producing bamboo fibers with bamboos. The process comprises the following steps: (1) breaking the original bamboos into bamboo chips with maximum diameter being 2-3cm; (2) soaking the bamboo chips obtained in the step (1); and (3) fibrillating the bamboo chips fished out in the step (2) into fine fibers with a devillicate machine, wherein the weight ratio of the water for soaking to the bamboo chips is (4-6):1; NaOH and bio-enzyme are mixed in the water for soaking; the addition of NaOH is 1-4% of the weight of the water for soaking and the addition of the bio-enzyme is 30-70g per ton of bamboos; the bio-enzyme is the mixture of laccase and xylanase in a weight ratio of (90-70):(10-30); the temperature of the water for soaking is 60-80 DEG C; and the soaking time is 4-8 hours. The pretreatment process has the following beneficial effects: the bio-enzyme participates in the reaction while the broken bamboo chips are subjected to hydrolysis treatment, thus effectively overcoming the alkali darkening reaction, reducing the use amount of oxidants in the late bleaching process by more than 40% and shortening the reaction time by more than 30%.

Description

technical field [0001] The invention relates to a pretreatment process for producing bamboo fiber from bamboo. Background technique [0002] The process of producing bamboo fiber from bamboo is roughly divided into several stages: raw bamboo cutting, screening and washing, hydrolysis pretreatment, cooking and thinning reaction, pulp refining, slag removal and concentration, and bleaching. [0003] Because the bamboo material is hard, it is difficult for chemicals to penetrate, so high alkaline conditions are generally used in the prior art of the hydrolysis pretreatment stage in order to increase the slurry yield. However, due to the severe "alkali dark color" reaction, the difficulty of bleaching the pulp has been increased, which is mainly reflected in hydrogen peroxide (H 2 o 2 ) consumption is large, and the bleaching process takes a long time. Contents of the invention [0004] The purpose of the present invention is to overcome the shortcomings of using high alkal...

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): D21C1/06D21C1/00D21C5/00D21B1/34
Inventor 武长安赵志远
Owner TIANJIN ZIWEI TAIKE PLANT FIBER TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap