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Anti-scaling agent and preparation method thereof

A technology of scale inhibitor, alkyl allyl glycerol, applied in chemical instruments and methods, descaling and water softening, special treatment targets, etc. Emission of three wastes and the effect of improving high temperature resistance

Inactive Publication Date: 2016-08-24
STATE DEV & INVESTMENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a scale inhibitor and a preparation method thereof, which solves the problem of poor scale inhibition performance of the scale inhibitor in the prior art under high salinity and high temperature conditions

Method used

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  • Anti-scaling agent and preparation method thereof

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preparation example Construction

[0029] According to the method for preparing scale inhibitor of the present invention, the method provides raw materials in parts by weight: 10-20 parts of maleic anhydride, 5-10 parts of styrene sulfonate, 10-20 parts of acrylamide, 5-10 parts Alkyl allyl glyceryl ether, 3 to 7 parts of sodium persulfate and 2 to 8 parts of sodium hypophosphite; among them,

[0030] The method comprises the steps of:

[0031] Preparation steps of solution I: dissolving the maleic anhydride, the styrene sulfonate, the acrylamide and the alkyl allyl glyceryl ether in deionized water to obtain solution I;

[0032] Preparation steps of solution II: dissolving the sodium persulfate in deionized water to obtain solution II;

[0033] Polymerization step: Dissolve sodium hypophosphite in deionized water, heat to 85-90°C, add solution I and solution II dropwise at the same time, react at 94-96°C for 2-4 hours after dropping, and obtain scale inhibitor.

[0034] According to the antiscalant of the pr...

Embodiment 1

[0052] According to the preparation method of the present invention, first carry out the preparation step of solution I: 15 grams of maleic anhydride, 8 grams of styrene sulfonate, 12 grams of acrylamide and 6 grams of alkyl allyl glyceryl ether are dissolved in 30 grams of deionized in water to obtain solution I; then carry out the preparation step of solution II: dissolve 5 grams of sodium persulfate in 30 grams of deionized water to obtain solution II; finally carry out the polymerization step: dissolve 6 grams of sodium hypophosphite in 40 grams of deionized In water, heat to 85-90°C, add solution I and solution II dropwise at the same time, react at 94-96°C for 3 hours after dropping, cool to room temperature to obtain light yellow transparent liquid, decolorize in 3% hydrogen peroxide solution, A colorless transparent liquid is obtained, and a scale inhibitor is obtained.

Embodiment 2

[0054] According to the preparation method of the present invention, first carry out the preparation step of solution I: 17 grams of maleic anhydride, 9 grams of styrene sulfonate, 13 grams of acrylamide and 6 grams of alkyl allyl glyceryl ether are dissolved in 30 grams of deionized in water to obtain solution I; then carry out the preparation step of solution II: dissolve 4 grams of sodium persulfate in 30 grams of deionized water to obtain solution II; finally carry out the polymerization step: dissolve 5 grams of sodium hypophosphite in 35 grams of deionized In water, heat to 85-90°C, add solution I and solution II dropwise at the same time, and the feeding is completed within 1 hour. After dropping, react at 94-96°C for 3 hours, and cool to room temperature to obtain a light yellow transparent liquid. The hydrogen peroxide solution is decolorized to obtain a colorless transparent liquid and obtain a scale inhibitor.

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Abstract

The invention discloses an anti-scaling agent and a preparation method thereof. The anti-scaling agent is formed by polymerizing maleic anhydride, styrene sulfonate, acrylamide and alkyl allyl glyceryl ether. The preparation method of the anti-scaling agent is prepared from, by weight, 10-20 parts of maleic anhydride, 5-10 parts of styrene sulfonate, 10-20 parts of acrylamide, 5-10 parts of alkyl allyl glyceryl ether, 3-7 parts of sodium persulfate and 2-8 parts of sodium hypophosphite. The method comprises the following steps of preparing a solution I, wherein maleic anhydride, styrene sulfonate, acrylamide and alkyl allyl glyceryl ether are dissolved into deionized water to obtain the solution I; preparing a solution II, wherein sodium persulfate is dissolved into the deionized water to obtain the solution II; performing polymerization, wherein sodium hypophosphite is dissolved into the deionized water, the temperature is increased to 85-90 DEG C, meanwhile, the solution I and the solution II are added dropwisely, and a reaction is performed at the temperature of 94-96 DEG C after dropwise addition for 2-4 h to obtain the anti-scaling agent.

Description

technical field [0001] The invention relates to the field of water treatment agents, in particular to a scale inhibitor and a preparation method thereof. Background technique [0002] Water-soluble polymers have been one of the most active areas of development in water treatment agents since the 1980s, and they have experienced from homopolymers to binary and multi-polymer copolymers (such as: polymaleic acid, polyacrylic acid (sodium) , polyacrylic acid / acrylate, polyacrylic acid / 2-acrylamido 2-methylpropyl sulfonic acid) development process. [0003] The molecular weight of the polymer is generally 1000-20000. After adding anionic polymer, it will increase the negative charge on the surface of the dirt and keep the ions in a dispersed state. In the cooling water treatment, the polymer not only has the function of inhibiting the formation of scale and dispersing tiny scale, but also can disperse particulate matter such as iron oxide and slime; in addition, it also has a go...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12C08F222/08C08F220/56C08F212/14C08F216/14
CPCC02F5/12C02F2303/22C08F222/08
Inventor 张风友杨文忠陈保红尹晓爽杨娜刘瑛
Owner STATE DEV & INVESTMENT
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