Enzymatic beating process for natural-color bagasse pulp

A technology of bagasse pulp and natural color, which is applied in the direction of pulp beating method, etc., to achieve the effect of mild conditions, low production cost and high enzyme activity

Inactive Publication Date: 2014-12-17
GUANGXI UNIV
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  • 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

Method used

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  • Enzymatic beating process for natural-color bagasse pulp
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  • Enzymatic beating process for natural-color 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 ...

Embodiment 2

[0033] Example 2 Analysis of energy consumption in the beating process of natural color bagasse pulp treated with xylanase

[0034]At the same time, the inventors analyzed the energy consumption of the beating process treated under the dosage of xylanase 30 IU / g dry pulp. The specific method is: under the conditions of pulp volume 35g dry pulp, pulp concentration 5%, pH value 6.0, temperature 50°C The pulp was treated separately for 60 minutes. During the treatment, the polyethylene bottle was rubbed 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 degre...

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Abstract

The invention discloses an enzymatic beating process for natural-color bagasse pulp. Xylanase is used in the enzymatic beating process for the natural-color bagasse pulp. The process comprises the steps of sizing agent defibering, enzyme treatment, washing, PFI beating, sheet making and physical detection. By adopting the process, the beating energy consumption of the natural-color bagasse pulp can be lowered effectively; the beating degree can be increased greatly up to 19.2 percent when enzyme treatment is performed on the xylanase at the dry pulp dosage of 30IU/g; meanwhile bagasse pulp cellulase can be protected from being damaged, and the process has important significance to 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 Applications(China)
IPC IPC(8): D21D1/02
Inventor 梁智群成显波陈桂光黄时海吴昊
Owner GUANGXI UNIV
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