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Method for reducing and removing organic pollutant deposition and ink in pulp and paper production

A technology of organic pollutants, pulping and papermaking, applied in pulp fat/resin/pitch/wax removal, papermaking, textiles and papermaking, etc., can solve the problems of narrow application range, poor effect and poor effect, and achieve elimination Interaction, reduction of organic pollutant deposition and deinking effect

Active Publication Date: 2018-02-06
RISINGSTAR BIOTECH GUANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of these methods can really completely and effectively solve the problem of organic matter deposition, and there is a defect that the effect is not good.
[0007] In conventional technology, DeTac (U.S. Hercules Inc. product) is often used to control organic matter deposition, but the problem is that the effect is poor and the scope of application is narrow, especially for fatty acid soap resin deposition.
[0011] However, so far, there is no real and completely effective solution to the problem of organic matter deposition

Method used

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  • Method for reducing and removing organic pollutant deposition and ink in pulp and paper production
  • Method for reducing and removing organic pollutant deposition and ink in pulp and paper production
  • Method for reducing and removing organic pollutant deposition and ink in pulp and paper production

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0076] 1. The preparation methods of polymers A, B, D, E, G and H are: The synthesis method of polyoxystyrene includes:

[0077] (1) Add tri-styrene phenol and ethylene oxide into the reactor according to the required mole ratio of the target product, and mix them evenly; then add the catalyst zincdiethyl and Water, the weight of which is based on the ratio of water: zinc diethyle: ethylene oxide to 1:1.10:13; then a large amount of dioxan is added as the reaction solvent, The reaction kettle was evacuated, and after reaching a high vacuum, the above reactants were heated to 80° C. and allowed to stir and mix continuously for 240 hours of reaction.

[0078] (2) Dissolve the product obtained from the above reaction in a benzene solution, then add methanol to precipitate the catalyst Zinc Diethyl, and terminate the polymerization reaction; then, the solid matter is separated and removed by centrifugal separation.

[0079] (3) Polymers D and H need to evolve the sulfonation reaction ac...

Embodiment 1

[0093] A method for reducing the deposition of organic pollutants in the production of pulping and papermaking. The method is mainly used for the control of organic pollutants (stickies) in the process of recycling waste newspapers to produce newsprint.

[0094] 1. Material

[0095] The dry cellulose pulp of deinked waste newspaper pulp (ONP) was obtained from a paper mill in the south.

[0096] Conventional stickies control agent adopts the registered trademark of Ashland Company Make reference comparison.

[0097] See Table 1 for other polymer products.

[0098] Two, method

[0099] Use a food mixer ( ) Simulate the pulp mixing and drying process in the process of pulp and paper production, measure the amount of stickies deposited on the surface of the mixing tank and stirring blade under different conditions, and then compare the effects of various components on the deposition of organic matter.

[0100] The conditions of the deposition test are: dry cellulose pulp 100 grams (dry pul...

Embodiment 2

[0109] A method for reducing the deposition of organic pollutants in the production of pulp and paper. The method is mainly used to control organic pollutants (stickies) in the process of producing corrugated paper with recycled boxboard (OCC).

[0110] 1. Material

[0111] The dry cellulose pulp of recycled boxboard pulp (OCC) was obtained from a paper mill in the south.

[0112] Biological enzyme composition (cellulase, hemicellulase and esterase), wherein: cellulase is a commercial product FiberZyme G200 of Dyadic Company, hemicellulase is a commercial product, and esterase is Guangzhou Ruichen Shengda Bio Clean Enzyme from Technology Co., Ltd. TM The product, model SC-3000, is derived from Aspergillus (Aspergillus) and expressed in E. coli after recombination. The relative activity ratio to the reaction substrate triglyceride and ethyl acetate is between 10 and 3.

[0113] See Table 1 for other polymer products used.

[0114] Two, method

[0115] according to figure 1 The producti...

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Abstract

A method for reducing and removing organic pollutant deposits and ink during pulp and paper production, said method comprising adding polystyrene phenol polyoxyethylene / propylene / butylene ether or sulphate, phosphate and carboxylic ester polymers having a molecular weight of 240-7000 to aqueous cellulose papermaking slurry, said polymers comprising at least one polymer represented by formula I. Wherein: R1 is selected from: hydrogen or C 1-4 alkyl; R2, R3, and R4 are selected from: hydrogen, methyl, ethyl, propyl or phenyl, and the substituents of adjacent R2 and R3 and R3 and R4 are from different radical groups; m is selected from: an integer between 0-70; n is selected from: an integer between 1-80; p is selected from: an integer between 0-30, and if one of R2 or R3 is selected from phenyl, then the corresponding p value is zero; z is selected from: an integer between 1-3; X is selected from: hydrogen, R5OOH, a sulfuric acid group, a phosphoric acid group, acrylic acid, maleic acid, or fumaric acid, or a soluble salt of any one of R5OOH, a sulfuric acid group, a phosphoric acid group, acrylic acid, maleic acid, or fumaric acid; and R5 is selected from C 1-4 alkyl.

Description

Technical field [0001] The invention relates to the technical field of pulping and papermaking, in particular to a method for reducing the deposition of organic pollutants and ink impurities and cleaning the paper machine system in the pulping and papermaking production, thereby improving the operating efficiency of the paper machine and product quality. Background technique [0002] As we all know, in the papermaking process, the deposition of organic pollutants (also called precipitation) is very detrimental to the quality of paper products and the efficiency of papermaking production. The two main specific reasons for this problem are resin deposition and sticky deposition. Among them, the main components of resin deposits are naturally present in wood and released during pulping and papermaking processes. From a physical point of view, "resin deposits" are usually formed by microscopic particles of the binder material (natural or man-made) in the slurry and accumulated on pap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H17/53
CPCD21C5/02D21C9/08D21H21/02Y02W30/64
Inventor 王祥槐王焱
Owner RISINGSTAR BIOTECH GUANGZHOU