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Preparation method of multi-component polymerized scale inhibitor

A scale inhibitor, multi-copolymerization technology, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc. low consumption effect

Inactive Publication Date: 2012-03-21
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, with the enhancement of people's awareness of environmental protection, the synthesis of new biodegradable scale inhibitors has gradually attracted the attention of the world, and many environmentally friendly scale inhibitors have come out, among which polyaspartic acid, poly Epoxy succinic acid, at present, the Chinese patent application number is 02111415.3 "preparation method of environmentally friendly scale inhibitor polyaspartic acid" application number is 200410015875.5 "biodegradable corrosion and scale inhibitor polyaspartic acid Preparation method", application number 200610012918.3 "a polyaspartic acid copolymer and its preparation method", application number 200710173243.5 "preparation method of glycine / aspartic acid copolymer used as green scale inhibitor", etc., The scale inhibition effect of aspartic acid scale inhibitors is very good, but the price is relatively expensive, and many enterprises do not use them in order to reduce production costs.

Method used

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  • Preparation method of multi-component polymerized scale inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (1) Take 12mL of acrylic acid and 15mL of methyl acrylate and place in a beaker, mix well, and make solution (I);

[0015] (2) Dissolve 10g sodium allyl sulfonate and 5g ammonium persulfate in 20mL water to form solution (II);

[0016] (3) Dissolve 30g of aconitic acid in 50mL of water, raise the temperature to 85°C, add 5mL of isopropanol under stirring, put the solution (I) and solution (II) into the dropping funnel and drop them at a constant speed (The dropping speed is controlled within 40min and the dropwise addition is completed). After all the dropping is completed, react at a constant temperature of 85°C for 4 hours, stop the reaction, cool to about 50°C, add 50% NaOH solution dropwise to the product, and adjust the pH to weakly alkaline. A yellow viscous transparent liquid is obtained, which is a multi-component copolymerization type scale inhibitor.

Embodiment 2

[0018] (1) Take 15mL of acrylic acid and 18mL of methyl acrylate and place them in a small cup, mix well, and make solution (I);

[0019] (2) Dissolve 10g of sodium allyl sulfonate and 6g of ammonium persulfate in 25mL of water to form solution (II);

[0020] (3) Dissolve 30g of aconitic acid in 55mL of water, raise the temperature to 90°C, add 7mL of isopropanol under stirring, put the solution (I) and solution (II) into the dropping funnel and drop them at a constant speed (The dropping speed is controlled within 40min and the dropwise addition is completed). After all the dropping is completed, react at a constant temperature of 90°C for 3 hours, stop the reaction, cool to about 50°C, add 50% NaOH solution dropwise to the product, and adjust the pH to weakly alkaline. A yellow viscous transparent liquid is obtained, which is a multi-component copolymerization type scale inhibitor.

Embodiment 3

[0022] (1) Take 20mL of acrylic acid and 22mL of methyl acrylate in a small cup, mix well, and make solution (I);

[0023] (2) Dissolve 15g sodium allylsulfonate and 8g ammonium persulfate in 30mL water to form solution (II);

[0024] (3) Dissolve 35g of aconitic acid in 60mL of water, raise the temperature to 95°C, add 10mL of isopropanol under stirring, put the solution (I) and solution (II) into the dropping funnel and drop them at a constant speed (The drop rate is controlled within 60 minutes and the dropwise addition is completed). After all the dropwise addition is completed, react at a constant temperature of 95°C for 5 hours, stop the reaction, cool to about 50°C, add 50% NaOH solution dropwise to the product, and adjust the pH to weakly alkaline. A yellow viscous transparent liquid is obtained, which is a multi-component copolymerization type scale inhibitor.

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Abstract

The invention discloses a multi-component polymerized scale inhibitor. The multi-component polymerized scale inhibitor is characterized in that: the scale inhibitor which is a quarternary polymerized compound comprises the following components, by mass, 25-35 parts of acomitic acid, 12-20 parts of acrylic acid, 15-22 parts of methyl acrylate, 8-15 parts of sodium alkyl sulfonate, 5-9 parts of ammonium persulfate, 5-10 parts of isopropanol, and 70-150 parts of water, and the pH of the scale inhibitor is adjusted by sodium hydroxide. The invention also discloses a preparation method of the multi-component polymerized scale inhibitor. The scale inhibitor which is prepared in the invention has an excellent scale inhibition effect on BaSO4 scales and SrSO4 scales, has an obvious scale inhibition performance on Ca3(PO4)2 and CaCO3, has the characteristics of corrosion inhibition, high temperature resistance, controllable molecular weight, no phosphorus and the like, and no three wastes are discharged in the whole production process of the scale inhibitor. The scale inhibitor of the invention, which has the advantages of simple technology, less dosage, low cost and good effect when the scale inhibitor is used to process industrial circulating water, oilfield water and the like, has good economic benefits and wide social benefits.

Description

technical field [0001] The invention belongs to the technical field of chemical industry and relates to a preparation method of a novel polymer corrosion and scale inhibitor. The scale inhibitor is a non-phosphorous multi-component copolymer and belongs to an environment-friendly green scale inhibitor. Background technique [0002] With the scale of industrial production and the rapid increase of population, water resources are seriously scarce. Since cooling water consumption accounts for 60-70% of industrial water consumption, it is particularly important to save cooling water reasonably. The main way to save cooling water is to increase the recycling rate of cooling water and increase the concentration of cooling water, but this will bring serious corrosion and scaling problems to the cooling water system, and also put forward higher requirements for scale inhibitors. requirements. [0003] As a kind of water treatment agent, antiscalant is widely used in circulating co...

Claims

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Application Information

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IPC IPC(8): C08F222/02C08F220/06C08F220/14C08F228/02C02F5/10
Inventor 李慧芝许崇娟庄海燕卢燕
Owner UNIV OF JINAN
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