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A kind of enzymatic beating process of natural bagasse pulp

A technology of bagasse pulp and natural color, which is applied in the direction of pulp beating method, etc., to achieve the effects of mild reaction temperature, high beating efficiency and reduced energy consumption

Inactive Publication Date: 2016-05-18
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the research on enzymatic beating mainly focuses on the beating process of bleached pulp, and there are few reports on the enzymatic beating of unbleached pulp. Unbleached pulp is the main raw material for the production of industrial paper—kraft cardboard and container board. my country's industrial paper production capacity has increased significantly, and the demand for unbleached pulp and its pulp has continued to increase and enrich. As a renewable pulp with obvious advantages, bagasse pulp will gradually become one of the important raw materials for industrial paper. 1. In-depth research on the enzymatic beating process of unbleached bagasse pulp has important economic and social significance

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  • A kind of enzymatic beating process of natural bagasse pulp
  • A kind of enzymatic beating process of natural bagasse pulp
  • A kind of enzymatic beating process of natural bagasse pulp

Examples

Experimental program
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Effect test

Embodiment 1

[0021] like figure 1 As shown, the inventor carried out enzymatic beating treatment to the unbleached bagasse pulp provided by Nanning sugar paper factory in the laboratory.

[0022] Using unbleached bagasse pulp provided by Nanning Sugar Paper Factory as raw material, high-frequency deflaking machine is used, pulp feeding pressure is 0.15-0.2MPa, rotor speed is 2000-3000r / min, and purification equipment is equipped at the paddle inlet. For 30-90 minutes, according to the enzyme dosage of 0, 10, 20, 30, 40 and 50 (IU / g dry pulp), the pulp volume is 35g dry pulp, the pulp concentration is 5%, the pH value is 6.0, and the temperature is 50°C. Slurry for 60 minutes, during the process, rub the polyethylene bottle by hand every 20 minutes to ensure the uniform mixing of enzyme and pulp. After the reaction is complete, thoroughly wash the pulp, and use ZQS7-PFⅠ vertical refiner for beating respectively. rpm. After the beating is completed, the slurry is thoroughly washed, and t...

Embodiment 2

[0033] Example 2 Analysis of Energy Consumption of Natural Color Bagasse Pulp Beating Process with Xylanase

[0034]The inventors also analyzed the energy consumption of the beating process treated under the dosage of xylanase 30IU / g dry pulp. Treat the pulp for 60 minutes. During the treatment process, rub the polyethylene bottle by hand every 20 minutes to ensure the uniform mixing of the enzyme and the pulp. After the reaction is completed, thoroughly wash the slurry, and use a ZQS7-PFⅠ vertical refiner to perform beating at 5000, 6000, 7000, and 8000 revolutions respectively. The beating concentration is 10%, and the gap between the beating roller and the beating chamber is 0.2mm. The pressure is 3.4N·mm -1 . After the beating is completed, the slurry is thoroughly washed, and the yield, beating degree and wet weight are measured. At the same time, it is copied into a quantitative 60g / m 2 The paper was tested for its tensile index, burst index and tear index.

[003...

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Abstract

The invention discloses an enzymatic beating process of uncolored bagasse pulp. Xylanase is used for the enzymatic beating process of unbleached bagasse pulp, which includes six steps: slurry dissolving, enzymatic treatment, washing, PFI beating, film copying and physical inspection. Steps, adopting this process can effectively reduce the energy consumption of unbleached bagasse pulp beating, and use xylanase at 30? When enzyme treatment is carried out at the dosage of IU / g dry pulp, the beating degree can be greatly increased up to 19.2%, and at the same time, the cellulase of bagasse pulp can be protected from being destroyed, which is of great significance for the production of industrial paper from bagasse pulp.

Description

technical field [0001] The invention belongs to the field of papermaking pulping technology, and in particular relates to an enzymatic beating technology of natural color bagasse pulp. Background technique [0002] Bagasse is a by-product of sugar factories and a highly concentrated fiber raw material for papermaking with Guangxi characteristics. Sugarcane contains about 10-13% fiber, and 1 ton of sugarcane can be squeezed to produce 22-24% bagasse with a moisture content of about 47-50%, which can be used to make paper. A variety of cultural and household papers can be produced using bagasse pulp. The raw material of bagasse can be used to make chemical pulp by conventional alkali method or sulfate method, which is easy to boil and bleach, and has good pulp performance. The bagasse bleached chemical pulp is blended with certain long fibers, which can be used to produce various high-grade cultural and household papers with good formation, such as copy paper, offset printin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21D1/02
Inventor 梁智群成显波陈桂光黄时海吴昊
Owner GUANGXI UNIV