Cooking auxiliary agent for papermaking and pulping

A cooking aid and pulping technology, applied in the field of papermaking, can solve the problems of long lignin decomposition and dissolution time, affecting the quality and yield of pulp, and poor solubility of cooking aids, so as to save steam consumption and shorten cooking The effect of time and slurry drift loss is small

Active Publication Date: 2014-10-15
刘建国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most pulping enterprises use soda sulfide, and some use anthraquinone and its derivatives, but these cooking aids have poor solubility, slow penetration into raw materials, and long time for lignin decomposition and dissolution, which causes dehydration. The removed substances are easily re-adsorbed by the fiber, which affects the quality and yield of pulp
In addition, such additives are toxic to a certain extent, resulting in serious environmental pollution, easy fouling in pipelines, and great corrosion to equipment.

Method used

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  • Cooking auxiliary agent for papermaking and pulping

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The described cooking aid for papermaking and pulping consists of the following components in percentage by weight:

[0033] Fatty alcohol polyoxyethylene ether 12%

[0034] Sodium dodecylbenzenesulfonate 20%

[0035] Sodium Alkyl Sulfonamide Acetate 8%

[0036] Alkylphenol ethoxylates 8%

[0037] Sodium nonylphenol ethoxylate sulfonate 5%

[0038] Dimethylsulfonic acid 3%

[0039] Sodium Carboxymethyl Cellulose 5%

[0040] Oleamide 1.2%

[0041] Sodium pyrophosphate 0.5%

[0042] Deionized water balance

Embodiment 2

[0044] The described cooking aid for papermaking and pulping consists of the following components in percentage by weight:

[0045] Fatty alcohol polyoxyethylene ether 8%

[0046] Sodium dodecylbenzenesulfonate 10%

[0047] Sodium Alkyl Sulfonamide Acetate 3%

[0048] Alkylphenol ethoxylates 3%

[0049] Sodium Nonylphenol Ethoxylate Sulfonate 2%

[0050] Dimethylsulfonic acid 1%

[0051] Sodium Carboxymethyl Cellulose 2%

[0052] Oleamide 0.5%

[0053] Sodium pyrophosphate 0.1%

[0054] Deionized water balance

Embodiment 3

[0056] The described cooking aid for papermaking and pulping consists of the following components in percentage by weight:

[0057] Fatty alcohol polyoxyethylene ether 10%

[0058] Sodium dodecylbenzenesulfonate 15%

[0059] Sodium Alkyl Sulfonamide Acetate 5%

[0060] Alkylphenol ethoxylates 5%

[0061] Sodium Nonylphenol Ethoxylate Sulfonate 3%

[0062] Dimethylsulfonic acid 2%

[0063] Sodium Carboxymethyl Cellulose 3%

[0064] Oleamide 1%

[0065] Sodium pyrophosphate 0.3%

[0066] Deionized water balance

[0067] The present invention will be further described below in conjunction with specific experiments.

[0068] Table 1 shows the effect of using the cooking aids of Examples 1, 2, and 3 of the present invention and commercially available cooking aids in alkaline pulping under other conditions of the same process.

[0069] Table 1

[0070]

[0071] It can be seen from the above experimental data that the cooking aid for papermaking and pulping of the presen...

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PUM

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Abstract

The invention relates to a cooking auxiliary agent for papermaking and pulping, belongs to the field of papermaking, and aims to solve the problems that the existing cooking auxiliary agent is high in toxicity and severe in environmental pollution. The cooking auxiliary agent for papermaking and pulping comprises the following components in percentage by weight: 8-12% of primary alcobol ethoxylate, 10-20% of linear alkylbenzene sulfonates, 3-8% of alkyl sulfonate sodium acetate, 3-8% of alkyl phenyl polyoxyethylene ether, 2-5% of sodium nonylphenol polyoxyethylene ether sulfonate, 1-3% of methyl sulfone, 2-5% of carboxymethyl cellulose, 0.5-1.2% of oleamide, 0.1-0.5% of sodium pyrophosphate and the balance of deionized water. The cooking auxiliary agent is mainly applicable to the papermaking field, can reduce environmental pollution, improve the screened pulp yield and reduce Kappa number.

Description

technical field [0001] The invention relates to a cooking aid for papermaking and pulping, which belongs to the field of papermaking. Background technique [0002] In the process of chemical pulping, cooking aids greatly affect the rate of lignin removal, pulp quality, pulp yield, and affect the effect of subsequent bleaching. At present, most pulping enterprises use soda sulfide, and some use anthraquinone and its derivatives, but these cooking aids have poor solubility and slow penetration into raw materials, and the decomposition and dissolution of lignin take a long time, which causes dehydration. The removed substances are easily re-adsorbed by the fiber, which affects the quality and yield of the pulp. In addition, this kind of additive has certain toxicity, causes great environmental pollution, is easy to scale in the pipeline, and is highly corrosive to equipment. [0003] Surfactants have the functions and functions of washing, wetting, penetrating, dispersing, em...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C3/22
Inventor 刘建国王刚
Owner 刘建国
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