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Digesting assistant in use for making paper

A cooking aid, molecular formula technology, applied in papermaking, textile and papermaking, pulping of cellulose raw materials, etc., can solve the problems affecting the quality and yield of pulp, long time for lignin decomposition and dissolution, slow penetration, etc. Good emulsification and diffusivity, reducing redox effects and improving whiteness

Inactive Publication Date: 2004-10-27
OUPULONG CHEM ENG SCI TECH GUANGZHOU
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Problems solved by technology

[0002] At present, soda sulfide, anthraquinone and their derivatives are generally used as pulp cooking aids in the paper industry. Due to the slow penetration of the liquid into the raw materials, the decomposition and dissolution of lignin take a long time; the removed gum, lignin and Resin, etc. are easily re-adsorbed by fibers, which affects the quality and yield of pulp

Method used

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Embodiment Construction

[0013] The specific embodiment, manufacturing process and effect of the present invention will be further described in conjunction with Table 1 below.

[0014] The papermaking cooking aid of the present invention contains the following components in every kilogram of cooking aid:

[0015] Polyoxyethylene alkyl ether molecular formula C 12-14 h 25-29 O(CH 2 CH 2 O) 3 H 0.08-0.3Kg

[0016] Sodium alkyl sulfonate molecular formula C 12-16 h 25-33 SO 3 N a 0.1-0.4kg

[0017] Urea 0.02-0.04Kg

[0018] Anthraquinone 0.01-0.03Kg

[0019] Anhydrous sodium sulfate 0.02-0.05Kg

[0020] Sulfuric acid (content 93-98%) 0.02-0.06kg

[0021] Water 0.4-0.7Kg

[0022] Production technology of the present invention:

[0023] 1. Prepare materials according to the ratio of raw materials in Table 1:

[0024] 2. Add water to the reaction kettle, raise the temperature slowly, start stirring, pour the above raw materials into the reaction kettle in sequence, heat up t...

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Abstract

A digestion aid for making paper is prepared from polyoxyvinyl alkylether, sodium alkylsulfonate, urea, anthraquinone, anhydrous sodium sulfate, sulfuric acid and water. Its advantages are high output rate and whiteness of pulp and short digestion time.

Description

technical field [0001] The present invention relates to a papermaking aid, more particularly, it relates to a papermaking cooking aid. Background technique [0002] At present, soda sulfide, anthraquinone and their derivatives are generally used as pulp cooking aids in the paper industry. Due to the slow penetration of the liquid into the raw materials, the decomposition and dissolution of lignin take a long time; the removed gum, lignin and Resin, etc. are easily re-adsorbed by fibers, which affects the quality and yield of pulp. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a cooking aid for papermaking that can increase the pulp yield, shorten the cooking time, and improve the whiteness of the pulp. [0004] The papermaking cooking aid of the present invention contains the following components in every kilogram of cooking aid: [0005] Polyoxyethylene alkyl ether (molecular formula C ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C3/00
Inventor 肖海曾令进花恒全樊慧明
Owner OUPULONG CHEM ENG SCI TECH GUANGZHOU
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