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Corrosion and scale inhibitor for circulation cooling water system with desalted seawater as replenishing water

A technology of circulating cooling water and corrosion and scale inhibitors, which is applied in seawater treatment, descaling and water softening, water/sludge/sewage treatment, etc. It can solve the problems of difficulty in meeting discharge standards, poor economy, and large amount of dosing, etc. Problems, to achieve the effect of not easy to decompose, prolong service life and improve stability

Inactive Publication Date: 2018-02-16
TIANJIN ZHENGDA SCI &TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At this stage, part of the anti-corrosion method is mainly to add Ca salt, NaHCO 3 、Na 2 CO 3 Etc. to improve the buffering property of produced water, but the large dosage is poor in economy
Some of the water treatment chemicals with strong corrosion and scale inhibition properties for general circulating water are used, and water treatment chemicals with strong corrosion and scale inhibition properties for general circulating water are not suitable for this circulating water system, and such Chemicals are generally phosphorus-containing water treatment chemicals that are difficult to meet discharge standards

Method used

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  • Corrosion and scale inhibitor for circulation cooling water system with desalted seawater as replenishing water
  • Corrosion and scale inhibitor for circulation cooling water system with desalted seawater as replenishing water
  • Corrosion and scale inhibitor for circulation cooling water system with desalted seawater as replenishing water

Examples

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Effect test

Embodiment 1

[0032] Preparation of Component A: Take 24g of polytenon acid, add 120g of demineralized water, stir well until the polytenon acid is completely dissolved, then add acrylic acid-maleic anhydride-2-acrylamido-2-methylpropanesulfonic acid Sodium copolymer 20g, after stirring evenly, then add 10g of methylene succinic acid-acrylic acid-β-hydroxypropyl ester copolymer, stir again until the solution is uniform, then add 20g of 2-aminoethyl heptadecenyl imidazoline, and then Stir until the solution is uniform, and finally add 6g of zinc chloride, and mix and stir evenly.

[0033] Preparation of component B: Take 20g of sodium hydroxide, add 114g of demineralized water, stir well until the sodium hydroxide is completely dissolved, then add 6g of 4-hydroxybenzotriazole and stir until the solution is uniform, then add S-carboxyethylthio Stir 20g of succinic acid until the solution is uniform, then add 20g of acrylic acid-isoprenesulfonic acid-acrylic acid-β-hydroxypropyl ester copolyme...

Embodiment 2

[0035] Preparation of Component A: Take 26g of polytenon acid, add 112g of demineralized water, stir well until the polytenon acid is completely dissolved, then add acrylic acid-maleic anhydride-2-acrylamido-2-methylpropanesulfonic acid Sodium copolymer 22g, after stirring evenly, then add 12g of methylene succinic acid-acrylic acid-β-hydroxypropyl ester copolymer, stir again until the solution is uniform, then add 22g of 2-aminoethylheptadecenyl imidazoline, and then Stir until the solution is uniform, and finally add 6g of zinc chloride, and mix and stir evenly.

[0036] Preparation of component B: Take 22g of sodium hydroxide, add 106g of demineralized water, stir well until the sodium hydroxide is completely dissolved, then add 6g of 4-hydroxybenzotriazole and stir until the solution is uniform, then add S-carboxyethylthio Stir 22g of succinic acid until the solution is uniform, then add 22g of acrylic acid-isoprenesulfonic acid-acrylic acid-β-hydroxypropyl ester copolymer...

Embodiment 3

[0038] Preparation of Component A: Take 26g of polytenon acid, add 104g of demineralized water, stir well until the polytenon acid is completely dissolved, then add acrylic acid-maleic anhydride-2-acrylamido-2-methylpropanesulfonic acid Sodium copolymer 24g, after stirring evenly, then add 14g of methylene succinic acid-acrylic acid-β-hydroxypropyl ester copolymer, stir again until the solution is uniform, then add 24g of 2-aminoethyl heptadecenyl imidazoline, and then Stir until the solution is uniform, finally add 8g of zinc chloride, and mix and stir evenly.

[0039] Preparation of component B: Take 24g of sodium hydroxide, add 96g of demineralized water, stir well until the sodium hydroxide is completely dissolved, then add 8g of 4-hydroxybenzotriazole and stir until the solution is uniform, then add S-carboxyethylthio Stir 24g of succinic acid until the solution is uniform, then add 24g of acrylic acid-isoprenesulfonic acid-acrylic acid-β-hydroxypropyl ester copolymer and...

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Abstract

The invention discloses a corrosion and scale inhibitor for a circulation cooling water system with desalted seawater as replenishing water. The corrosion and scale inhibitor comprises a component A and a component B, wherein the component A comprises 12-15% of polyaspartic acid, 10-15% of 2-aminoethyl-heptadecene imidazoline, 10-15% of an acrylic acid-maleic anhydride-2-acrylamide-2-methyl sodiumsulfonate copolymer, 5-10% of a itaconic acid-acrylic acid-beta-propylparaben copolymer, 3-5% of zinc chloride and 40-60% of softened water; the component B comprises 10-15% of an acrylic acid-isoprene sulfonic acid-acrylic acid-beta-propylparaben copolymer, 10-15% of S-carboxyalkylthiosuccinic acid, 10-15% of sodium benzoate, 3-5% of 4-phenol benzotriazole, 10-15% of sodium hydroxide and 35-57%of softened water; the mass ratio of the component A to the component B is 3:1. The corrosion and scale inhibitor disclosed by the invention is good in corrosion and scale inhibition property, the water resource is saved, and the service life of equipment is prolonged.

Description

technical field [0001] The invention relates to the field of water treatment agents for circulating cooling water systems using primary RO seawater desalinated water as supplementary water, in particular to a corrosion and scale inhibitor for circulating cooling water systems using primary RO seawater desalinated water as supplementary water and its preparation method and application . Background technique [0002] With the increasing shortage of fresh water resources and the country's control of industrial water use, the use of reverse osmosis technology to produce fresh water from seawater has become the primary way for coastal water-consuming enterprises to obtain production water, and many industries and industrial parks are also actively trying One-stage RO seawater desalination is used to make up for the shortage of fresh water. However, the corrosiveness of primary RO product water to carbon steel is even greater than that of seawater without desalination. Oxygen is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/10C02F5/12C02F5/08C02F103/08
CPCC02F5/105C02F5/125C02F2103/08
Inventor 郭勇康宏磊杨喻
Owner TIANJIN ZHENGDA SCI &TECH CO LTD
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