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Boiling assistant for preparing high polymerised pulp

A cooking aid and high degree of polymerization technology, which is used in cellulose raw material pulping, textiles and papermaking, papermaking, etc., can solve the problem that cooking aids cannot meet ultra-high whiteness, and achieves promotion of swelling and fracture. Long, improve the effect of full contact

Inactive Publication Date: 2011-09-07
YIBIN GRACE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem that the cooking aids in the preparation process of high-polymerization pulp such as coinage pulp cannot meet the requirements of ultra-high whiteness, lower ash, iron and higher fiber strength, and solve the problem of preparing high-polymerization pulp. Flotation and removal of wax, protein and fat in pulp, removal of lignin and pectin; uniform penetration of cooking liquid; removal of sulfuric acid insoluble matter; after steaming, the fiber color of half pulp is darker, And slurry ash content, high iron quality and other issues

Method used

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  • Boiling assistant for preparing high polymerised pulp
  • Boiling assistant for preparing high polymerised pulp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A. Cotton opening: After the cotton linters are unpacked, they are sent to the cotton opener by the conveyor belt, and after being shredded by large and small licker-in rollers, they are sent to the cyclone separator by wind;

[0037] B. Dry impurity removal: The cyclone separator is connected in series with the fiber impurity removal and sorting machine. When the air is sent, under the action of gravity, the cotton seed hulls and other impurities are separated from the cotton linter fibers;

[0038] C. Configure biological enzyme compound preparation: sodium sulfite, α-methylanthraquinone (α-MAQ), lipase, hemicellulase, lignin degrading enzyme, DTPA (diethylenetriaminepentaacetic acid), dodecane Sodium phenyl sulfonate is calculated by weight percentage: sodium sulfite 30%; α-methylanthraquinone 10%; lipase 5%; hemicellulase 10%; lignin degrading enzyme 10%; Sodium benzenesulfonate 25% is evenly mixed and prepared into a compound preparation for use;

[0039] D. Confi...

Embodiment 2

[0044] A. Cotton opening: After the cotton linters are unpacked, they are sent to the cotton opener by the conveyor belt, and after being shredded by large and small licker-in rollers, they are sent to the cyclone separator by wind;

[0045] B. Dry impurity removal: The cyclone separator is connected in series with the fiber impurity removal and sorting machine. When the air is sent, under the action of gravity, the cotton seed hulls and other impurities are separated from the cotton linter fibers;

[0046] C. Configure biological enzyme compound preparation: sodium sulfite, α-methylanthraquinone (α-MAQ), lipase, hemicellulase, lignin degrading enzyme, DTPA (diethylenetriaminepentaacetic acid), dodecane Sodium phenyl sulfonate is calculated by weight percentage: sodium sulfite 38%; α-methylanthraquinone 5%; lipase 15%; hemicellulase 1%; lignin degrading enzyme 1%; Sodium benzenesulfonate 30% is uniformly mixed and prepared into a compound preparation for use;

[0047] D. Conf...

Embodiment 3

[0052] A. Cotton opening: After the cotton linters are unpacked, they are sent to the cotton opener by the conveyor belt, and after being shredded by large and small licker-in rollers, they are sent to the cyclone separator by wind;

[0053] B. Dry impurity removal: The cyclone separator is connected in series with the fiber impurity removal and sorting machine. When the air is sent, under the action of gravity, the cotton seed hulls and other impurities are separated from the cotton linter fibers;

[0054] C. Configure biological enzyme compound preparation: sodium sulfite, α-methylanthraquinone (α-MAQ), lipase, hemicellulase, lignin degrading enzyme, DTPA (diethylenetriaminepentaacetic acid), dodecane Sodium phenyl sulfonate is calculated by weight percentage: sodium sulfite 50%; α-methylanthraquinone 5%; lipase 5%; hemicellulase 5%; lignin degrading enzyme 5%; Sodium benzenesulfonate 20% is evenly mixed and prepared into a compound preparation for use;

[0055] D. Configur...

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Abstract

The invention relates to a boiling assistant for preparing high polymerised pulp. The assistant comprises 30-50% of sodium sulfite, 5-10% of alpha-methylanthraquinone (alpha-MAQ), 5-15% of lipase, 1-10% of hemicellulase, 1-10% of ligninase, 10-20% of diethylene triaminepentaacetic acid (DTPA) and 20-40% of sodium dodecyl benzene sulfonate. The assistant can promote the swelling of celluloses, quickly improve the permeation of alkaline liquor on celluloses, accelerate the breakage of primary walls, quickly dissolve out lignin, pectin, wax and other non-fiber impurities, improve the boiling reaction speed, oxidize the reducing groups (aldehyde terminal groups) of the cotton linter carbohydrate into various alkali-stable sugar acid terminal groups, inhibit the peeling reaction, reduce the degradation of celluloses and improve the yield.

Description

technical field [0001] The invention belongs to the field of chemical fiber pulp production, in particular to a cooking aid for preparing pulp with a high degree of polymerization. Background technique [0002] In the production of pulp with a high degree of polymerization such as mint pulp, the raw materials are mostly third-grade cotton and class I cashmere. The raw material cost of grade 3 cotton is too high; the cost of grade 1 cashmere is low but its lignin, sulfuric acid insoluble matter (cotton seed hulls, cotton boll skin) and other impurities are too high. In the production of high-polymerization pulp such as mint pulp, the cooking technology is mainly low-temperature and low-alkali conventional alkali method or oxygen-alkali method. For the third-grade cotton raw materials, the above two cooking methods can easily meet the quality requirements of mint pulp; but for the first-class velvet raw materials, it is difficult for the two cooking methods to remove sulfuric...

Claims

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Application Information

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IPC IPC(8): D21C3/22D21C5/00
Inventor 薛勤徐发祥刘爱兵蒲运龙谢鹏
Owner YIBIN GRACE GROUP CO LTD
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