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A low-phosphorus scale and corrosion inhibitor and preparation method thereof

A scale and corrosion inhibitor, mass percentage technology, applied in the field of water treatment agent and its manufacturing, can solve the problems of eutrophication of water body, not meeting the needs of green environmental protection development, etc., and achieves small environmental impact, excellent dispersion effect, and scale inhibition. and excellent corrosion inhibition effect

Active Publication Date: 2021-05-04
江苏科利恩净水科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, a large amount of phosphate is used in this formula, and the phosphorus content in the water body treated with this scale and corrosion inhibitor is greatly increased. After discharge, it is easy to cause problems such as eutrophication of the water body, which does not meet the development needs of green environmental protection.

Method used

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  • A low-phosphorus scale and corrosion inhibitor and preparation method thereof
  • A low-phosphorus scale and corrosion inhibitor and preparation method thereof
  • A low-phosphorus scale and corrosion inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0065] A low-phosphorus scale and corrosion inhibitor, in terms of mass percentage, the content of each component is shown in the table below,

[0066] Each component content table in table 1. embodiment 1-6

[0067]

[0068] Wherein, hydrochloric acid is the industrial hydrochloric acid that mass percent concentration is 31%.

[0069] Zinc chloride can also be replaced by zinc sulfate and zinc nitrate.

[0070] Carboxylic acid-sulfonic acid-acrylate terpolymer is formed by copolymerization of carboxylic acid monomer, sulfonic acid monomer and acrylate monomer, and the molecular weight is ≤500Da; wherein, the carboxylic acid monomer can be selected from crotonic acid, β- Any one of phenylacrylic acid, maleic acid and fumaric acid; the sulfonic acid monomer can be selected from any one of 2-acrylamide-2-methylpropanesulfonic acid and methacrylic acid; The body can be selected from any one of 2-methyl methacrylate, 2-ethyl methacrylate, methyl acrylate and ethyl acrylate. ...

Embodiment 7-10

[0072] A low-phosphorus scale and corrosion inhibitor, in terms of mass percentage, the content of each component is shown in the table below,

[0073] Each component content table in table 2. embodiment 7-10

[0074]

[0075] Wherein, hydrochloric acid is the industrial hydrochloric acid that mass percent concentration is 31%.

[0076] Zinc chloride can also be replaced by zinc sulfate and zinc nitrate.

[0077] Carboxylic acid-sulfonic acid-acrylate terpolymer is formed by copolymerization of carboxylic acid monomer, sulfonic acid monomer and acrylate monomer, and the molecular weight is ≤500Da; wherein, the carboxylic acid monomer can be selected from crotonic acid, β- Any one of phenylacrylic acid, maleic acid and fumaric acid; the sulfonic acid monomer can be selected from any one of 2-acrylamide-2-methylpropanesulfonic acid and methacrylic acid; The body can be selected from any one of 2-methyl methacrylate, 2-ethyl methacrylate, methyl acrylate and ethyl acrylate. ...

Embodiment 11-14

[0080] A low-phosphorus scale and corrosion inhibitor, in terms of mass percentage, the content of each component is shown in the table below,

[0081] Table 3. Each component content table in embodiment 11-14

[0082]

[0083] Wherein, hydrochloric acid is the industrial hydrochloric acid that mass percent concentration is 31%.

[0084] Zinc chloride can also be replaced by zinc sulfate and zinc nitrate.

[0085] Carboxylic acid-sulfonic acid-acrylate terpolymer is formed by copolymerization of carboxylic acid monomer, sulfonic acid monomer and acrylate monomer, and the molecular weight is ≤500Da; wherein, the carboxylic acid monomer can be selected from crotonic acid, β- Any one of phenylacrylic acid, maleic acid and fumaric acid; the sulfonic acid monomer can be selected from any one of 2-acrylamide-2-methylpropanesulfonic acid and methacrylic acid; The body can be selected from any one of 2-methyl methacrylate, 2-ethyl methacrylate, methyl acrylate and ethyl acrylate....

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Abstract

The invention discloses a low-phosphorus scale and corrosion inhibitor and a preparation method thereof, belonging to the technical field of water treatment agents and the preparation thereof. The main points of the technical scheme are as follows, in terms of mass percentage: hydrochloric acid 8%-15% , zinc salt 1%‑6%, carboxylic acid‑sulfonic acid‑acrylate terpolymer 30%‑40%, 2‑phosphonic acid group‑1,2,4‑tricarboxylic butane 8%‑10%, 20%-30% of maleic anhydride is hydrolyzed, and the balance is water; the hydrochloric acid is industrial hydrochloric acid with a mass percentage concentration of 31%. The low-phosphorus scale and corrosion inhibitor of the present invention has low-phosphorus and environmental protection, is suitable for high-pH, high-temperature and harsh water quality conditions, and has excellent scale and corrosion slowing effects. The invention correspondingly discloses a preparation method of the above-mentioned low-phosphorus scale and corrosion inhibitor, which has simple process steps, and the prepared low-phosphorus scale and corrosion inhibitor is low-phosphorus and environmentally friendly, suitable for high pH, ​​high temperature, harsh water quality conditions, scale inhibition And the advantages of excellent corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of water treatment agent and its manufacture, more specifically, it relates to a low phosphorus scale and corrosion inhibitor and its preparation method. Background technique [0002] In industrial water, the consumption of cooling water ranks first, accounting for about 80%. The way to save cooling water is to use circulating cooling water and increase the concentration factor. However, in the circulating cooling water system, due to the increase of water temperature, evaporation of water, and the concentration of various inorganic ions and organic substances, the hardness, alkalinity and pH of the circulating water naturally increase, which makes the free and dissolved CO in the water 2 A large amount of escape, CaCO will be formed in the water supply pipes and water equipment 3 Precipitation, causing CaCO in the system 3 Scaling; and electrolytes such as dissolved gases, corrosive salts and acids conta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/14C02F103/02
CPCC02F5/145C02F2103/023C02F2303/08C02F2303/22
Inventor 闻建东弓志定高晶何佳张长喜苏文斌
Owner 江苏科利恩净水科技有限公司
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