Device and method for making refined cottons through performing high-concentration hydrogen peroxide bleaching on cotton linters

A technology of high-concentration hydrogen peroxide and cotton linters, which is applied in the field of cotton linter pulping, can solve the problems of low pulping yield, harm to human health and ecological environment, and decrease in the degree of polymerization of cotton fibers, so as to accelerate mass transfer. The effect of increasing the rate, improving the utilization rate, and increasing the concentration

Inactive Publication Date: 2015-11-04
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, under the conditions of high temperature and high pressure, the cellulose decomposes severely, resulting in a serious decrease in the degree of polymerization of cotton fibers and a low pulping yield.
On the

Method used

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  • Device and method for making refined cottons through performing high-concentration hydrogen peroxide bleaching on cotton linters
  • Device and method for making refined cottons through performing high-concentration hydrogen peroxide bleaching on cotton linters

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039] Example 1

[0040] like figure 1 As shown in the figure, a device for preparing refined cotton by bleaching cotton linters with high concentration of hydrogen peroxide includes a bale opener, a metal detector, a cotton opener, an impurity remover, a cyclone, a first screw conveyor, a half pulper, an installation and decoupling machine. The first medium-consistency refiner with a type refining disc, the second medium-consistency refiner with a refining type disc, the first double-wire dehydrator, a crushing screw conveyor, a double-stick mixer, a belt conveyor, and a high-consistency mixer , high-concentration bleaching tower, second screw conveyor, second double-wire dewatering machine, wherein the cotton linters are connected between the bale opener, the metal detector and the cotton opener through a belt conveyor, and the cotton linters are connected between the opener, metal detector and cotton opener. The impurity remover and the cyclone separator are connected b...

Example Embodiment

[0047] Embodiment 2

[0048] like figure 2 As shown, the method for preparing refined cotton by bleaching cotton linters with high-concentration hydrogen peroxide, using Class III cotton linters as raw materials, includes the following steps:

[0049] 1) Open cotton and remove impurities. After the cotton linters are opened by the bale opener, the metal detector will check and remove the metal objects, and then the cotton linters will be opened and shredded into small flocculent pieces by the cotton opener. Some impurities are removed, and then conveyed to the impurity remover to further remove foreign impurities such as dust and cottonseed hulls; the content of foreign mechanical impurities carried by the cotton linters after treatment is less than 4%;

[0050] 2) Pre-infiltration, washing and refining, the cotton linters after cotton opening and impurity removal are mixed with NaOH solution with a temperature of 40°C and a mass concentration of 5% in a cyclone, and then ...

Example Embodiment

[0056] Embodiment 3

[0057] like figure 2 As shown, the method for preparing refined cotton by bleaching cotton linters with high-concentration hydrogen peroxide, using Class III cotton linters as raw materials, includes the following steps:

[0058] 1) Open cotton and remove impurities. After the cotton linters are opened by the bale opener, the metal detector will check and remove the metal objects, and then the cotton linters will be opened and shredded into small flocculent pieces by the cotton opener. Some impurities are removed, and then conveyed to the impurity remover to further remove foreign impurities such as dust and cottonseed hulls; the content of foreign mechanical impurities carried by the cotton linters after treatment is less than 4%;

[0059] 2) Pre-infiltration, washing and refining, the cotton linters after cotton opening and impurity removal are mixed with NaOH solution with a temperature of 80°C and a mass concentration of 2% in a cyclone, and then ...

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Abstract

The invention discloses a device for making refined cottons through performing high-concentration hydrogen peroxide bleaching on cotton linters. The device comprises a bale opener, a metal detector, a cotton slitting machine, an impurity removal machine, a cyclone separator, a first spiral conveyor, a half stuff machine, a first medium-concentration stuff grinder where a defibering type grinding disc is installed, a second medium-concentration stuff grinder where a stuff-grinding type grinding disc is installed, a first double-net dehydrator, a crashing spiral conveyor, a double-rod mixer, a belt conveyor, a high-concentration mixer, a high-concentration bleaching tower, a second spiral conveyor and a second double-net dehydrator. The device is simple in structure and convenient to install and maintain. The invention further provides a method for making the refined cottons through performing high-concentration hydrogen peroxide bleaching on the cotton linters. By the utilization of the method, the quality of obtained products is high, impurities are few, the yield is high, the cost is low, and environment pollution is small.

Description

Technical field [0001] The present invention is the field of cotton short velvet, and it involves a device and method for preparing formed cotton for a cotton short velvet high -thick hydrogen peroxide bleaching. Background technique [0002] The cotton fiber that is shorter than the cotton cotton is a short fiber peeled from the surface of the cottonseed on the surface of the cotton cotton. Its length is usually only 10 ~ 50%of the cotton cotton.Derivatives and other aspects.As a high -quality paper fiber raw material, it is mainly used for production paper, banknote paper and special technical use paper. [0003] Cotton short velvet itself has more than 90%of the cellulose content, and non -cellulose impurities are not much.However, many foreign impurities have been mixed in the process of production, processing, and transportation, which brings great difficulties to the pulp.Therefore, the purpose of cotton short velvet pulp is to remove foreign mechanical impurities such as c...

Claims

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Application Information

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IPC IPC(8): D21B1/34D21C1/02D21C9/16
CPCD21B1/342D21B1/345D21C1/02D21C9/163
Inventor 雷利荣李友明徐旗开朱小林黄运贤肖仙英黄放辉侯轶
Owner SOUTH CHINA UNIV OF TECH
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