Four-element polymerization type corrosion inhibition antisludging agent and method for preparing same

A corrosion and scale inhibitor, polymeric technology, applied in the field of quaternary polymeric corrosion and scale inhibitors and its preparation, can solve the problems of corrosion and scaling in cooling water systems, achieve corrosion inhibition, molecular structure stability, drug use less effect

Inactive Publication Date: 2008-10-22
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 it also poses a problem for water treatment chemicals. higher requirements to ensure the normal operation of the circulating cooling water system under the conditions of high hardness, high alkalinity, high chloride ions or high concentration of organic pollutants

Method used

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  • Four-element polymerization type corrosion inhibition antisludging agent and method for preparing same
  • Four-element polymerization type corrosion inhibition antisludging agent and method for preparing same
  • Four-element polymerization type corrosion inhibition antisludging agent and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 80kg of water and put it in the reaction kettle, slowly add 25kg of maleic anhydride, stir, heat up to 85±5°C, add 5kg of molecular weight regulator isopropanol under stirring conditions; then prepare 10kg of hydroxypropyl acrylate and 20kg of The mixed solution (I) of acrylic acid 60~90kg; And the mixed solution (II) 60~90kg of 15kg sodium allyl sulfonate, 6kg sodium persulfate and 7kg sodium hypophosphite;

[0017] Note: Dissolve sodium allyl sulfonate and sodium persulfate before adding sodium hypophosphite. Water cannot be added all at once, but should be added slowly. Under the condition of continuous stirring, the temperature control of the reactor was adjusted to 85±5°C, and the mixed solutions (I) and (II) were added dropwise at the same time, and the dropping speed of the mixed solutions (I) and (II) was controlled to be within 1 hour at the same time After the dropwise addition, keep the temperature constant for 3 hours and cool to obtain the quaternary p...

Embodiment 2

[0019] Take 60kg of water and put it in the reaction kettle, slowly add 30kg of maleic anhydride, stir, heat up to 85±5°C, add 7kg of molecular weight regulator isopropanol under stirring conditions; then prepare 5kg of hydroxypropyl acrylate and 10kg The mixed solution (I) of acrylic acid is about 60~90kg; And the mixed solution (II) 60~90kg of 7kg sodium allyl sulfonate, 4kg sodium persulfate and 5kg sodium hypophosphite; According to the method and step of above-mentioned embodiment 1 to operate.

Embodiment 3

[0021] Take 70kg of water and put it in the reaction kettle, slowly add 40kg of maleic anhydride, stir, heat up to 85±5°C, add 8kg of molecular weight regulator isopropanol under stirring conditions; then prepare 6kg of hydroxypropyl acrylate and 15kg of About 60kg of the mixed solution (I) of acrylic acid; And about 60kg of the mixed solution (II) of 9kg sodium allyl sulfonate, 6kg sodium persulfate and 6kg sodium hypophosphite; Operate according to the method and step of above-mentioned embodiment 1.

[0022] Specific comparison method

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Abstract

The invention discloses a quaternary polymeric form corrosion and scale inhibitor which consists of maleic anhydride, hydroxy-propyl acrylate, acrylic acid, sodium alkyl sulfonate, sodium peroxydisulfate, sodium hypophosphite, isopropyl alcohol and water. The invention also discloses a preparation method of the quaternary polymeric form corrosion and scale inhibitor. The corrosion and scale inhibitor has good performance in inhibiting calcium carbonate scale, calcium sulphate scale, calcium phosphate scale and zinc scale and good dispersing performance for dispersing ferric oxide and is also characterized by corrosion resistance, high temperature resistance, stable molecule structure and low phosphorus content; the whole production process has no emission of 'the three wastes'. The technique of the product of the invention for treating circular cooling water is simple and the product of the invention has the advantages of little dosage, low cost, good effect and good economic benefit and wide social benefit.

Description

technical field [0001] The invention belongs to the field of chemical industry, and relates to a quaternary polymerization type corrosion and scale inhibitor used in industrial cooling water systems and a preparation method thereof. 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 it also poses a problem for water treatment chemicals. Higher requirements are imposed to ensure the normal operation of the circulating cooling water system under the conditions of high hardness, high alkalinity, high chloride ions o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/08
Inventor 王平
Owner NANJING FORESTRY UNIV
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