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Scale and corrosion inhibition microcapsule and preparation method thereof

A technology for scale and corrosion inhibition and microcapsules is applied in the field of scale and corrosion inhibition microcapsules and their preparation, which can solve the problems of poor control of dosage, eutrophication of water bodies, secondary environmental pollution, etc., and achieve excellent corrosion inhibition. Synergistic effect, lower disposal cost, easy biodegradation effect

Inactive Publication Date: 2018-09-25
常州市蒽盗钟情生物科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention: for the scale and corrosion inhibitors commonly used in the market at present, they must be dissolved into an aqueous solution when water treatment is performed, and then added to water for water treatment. The operation is complicated, and the dosage is not easy to control. inconvenient
Most of the existing scale and corrosion inhibitors are composed of organic phosphonic acid and organic polymers. Sewage discharge will cause a large amount of phosphorus to be discharged into natural water bodies, resulting in eutrophication of water bodies, thereby causing secondary environmental pollution. Preparation method of scale and corrosion inhibiting microcapsules

Method used

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  • Scale and corrosion inhibition microcapsule and preparation method thereof

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preparation example Construction

[0020] The preparation method of the polyaspartic acid complex: in parts by mass, take 6~10 parts of water, 3~5 parts of sodium hydroxide solution, mix and stir, and finally take 20~30 parts of polyaspartic acid, 15~20 parts 1 part of acrylic acid-hydroxyethyl acrylate copolymer, 13~18 parts of citric acid, 16~22 parts of ammonia water, mixed and stirred for 20~30min, and the temperature was kept at 30~35°C to obtain a modified polyaspartic acid compound;

[0021] The preparation method of the corrosion-inhibiting compound: in parts by mass, at 20-25°C, take 40-50 parts of polyacrylamide, 15-23 parts of 2,3-diaminonaphthalene, 8-13 parts of hydrogen bromide, 7 ~10 parts of OP-15, 12~15 parts of sodium secondary alkyl sulfonate, 10~15 parts of water are mixed and stirred, and the temperature is adjusted to 40~45°C to obtain the corrosion inhibition compound;

[0022] Composite emulsifier: in parts by mass, take 20-25 parts of polyoxyethylene oleate, 10-14 parts of polyoxyethyle...

Embodiment 1

[0029] The preparation method of the polyaspartic acid complex: in parts by mass, 6 parts of water and 3 parts of sodium hydroxide solution are mixed and stirred, and then 20 parts of polyaspartic acid and 15 parts of acrylic acid-hydroxyethyl acrylate are copolymerized Compound, 13 parts of citric acid, and 16 parts of ammonia water were mixed and stirred for 20 minutes, and the temperature was kept at 30°C to obtain a modified polyaspartic acid complex;

[0030] The preparation method of the corrosion-inhibiting compound: in parts by mass, at 20°C, take 40 parts of polyacrylamide, 15 parts of 2,3-diaminonaphthalene, 8 parts of hydrogen bromide, 7 parts of OP-15, 12 parts of secondary Sodium alkylsulfonate and 10 parts of water were mixed and stirred, and the temperature was adjusted to 40°C to obtain a corrosion-inhibiting compound;

[0031] Composite emulsifier: in parts by mass, 20 parts of polyoxyethylene oleate, 10 parts of polyoxyethylene ether, and 20 parts of water ar...

Embodiment 2

[0038]The preparation method of the polyaspartic acid complex: in parts by mass, 10 parts of water and 5 parts of sodium hydroxide solution are mixed and stirred, and then 30 parts of polyaspartic acid and 20 parts of acrylic acid-hydroxyethyl acrylate are copolymerized Compound, 18 parts of citric acid, 22 parts of ammonia water, mixed and stirred for 30 minutes, and the temperature was kept at 35°C to obtain a modified polyaspartic acid complex;

[0039] The preparation method of the corrosion inhibition compound: in parts by mass, at 25°C, take 50 parts of polyacrylamide, 23 parts of 2,3-diaminonaphthalene, 13 parts of hydrogen bromide, 10 parts of OP-15, 15 parts of secondary Sodium alkyl sulfonate and 15 parts of water were mixed and stirred, and the temperature was adjusted to 45°C to obtain a corrosion-inhibiting compound;

[0040] Composite emulsifier: in parts by mass, 25 parts of polyoxyethylene oleate, 14 parts of polyoxyethylene ether, and 30 parts of water are mix...

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Abstract

The invention discloses a scale and corrosion inhibition microcapsule and a preparation method thereof, and belongs to the technical field of water treatment agents. According to the scale and corrosion inhibition microcapsule and the preparation method thereof, polyacrylamide and 2,3-diaminonaphthalene are used in a corrosion inhibition component and have a synergistic effect so that the corrosion inhibition effect can be greatly improved; introduced secondary alkane sulphonate sodium can improve the biodegradability of the polyacrylamide, is a green surfactant and also has the effect of inhibiting the growth of bacteria, so that the use amount of a bactericide can be decreased, and the circulating water treatment cost can be lowered; halogen ions in hydrogen bromide generate specific adsorption on the metal surface to enable the metal surface to carry a negative charge, and molecules, which are beneficial to protonation, of two organic corrosion inhibitors, namely the polyacrylamideand the 2,3-diaminonaphthalene are adsorbed on the metal surface, and therefore the corrosion inhibition effect of the corrosion inhibitors can be improved; and the problems that a scale and corrosioninhibitor commonly used in the existing market needs to be firstly dissolved into an aqueous solution during water treatment, then the aqueous solution is added into water for water treatment, the operation is complex, and secondary environmental pollution can be caused can be solved.

Description

technical field [0001] The invention belongs to the technical field of water treatment chemicals, and in particular relates to a scale and corrosion inhibiting microcapsule and a preparation method thereof. Background technique [0002] The scale and corrosion inhibitor belongs to one of the products in the technical field of water treatment chemicals. With the rapid development of social economy, the demand for industrial water continues to increase, but the scaling and corrosion of pipeline equipment have restricted industrial production. The circulating cooling water is forced to evaporate through the water tower to take away the heat, but as the circulating cooling water continues to concentrate and evaporate, various harmful ions will continue to enrich, and the dust and microorganisms in the air will accumulate in the circulating water. The form of mud adheres to the pipe wall of the waterway system, and the concentration of harmful ions (Ca2+, Mg2+, HCO3-, etc.) exce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14B01J13/04
CPCB01J13/043C02F5/145C02F2303/08C02F2303/22
Inventor 雷红军陈炎丁正颖
Owner 常州市蒽盗钟情生物科技有限公司
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