Environment-friendly corrosion and scale inhibitor and preparation method thereof

A corrosion and scale inhibitor, an environment-friendly technology, applied in the field of environment-friendly corrosion and scale inhibitors and its preparation, can solve the problem of high price of polyaspartic acid, difficulty in achieving high corrosion and scale inhibition performance, etc. problems, achieve the effect of reducing water cost, reducing pollution, and prolonging the service life

Inactive Publication Date: 2021-05-11
王强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Chinese patent 200810079676.9 discloses a preparation method using polyaspartic acid, aminotrimethylene phosphonic acid, hydrolyzed maleic anhydride, acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid copolymer, polyacrylic acid and water A circulating water scale inhibitor, which has the characteristics of safety, reliability, easy configuration, and convenient use, but the price of polyaspartic acid is relatively high, and its own corrosion and scale inhibition performance is generally difficult to reach a high level , and it mainly depends on the compound use with phosphorus-containing salts to achieve better scale inhibition effect

Method used

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  • Environment-friendly corrosion and scale inhibitor and preparation method thereof
  • Environment-friendly corrosion and scale inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) The steps of compound amino acid ionic liquid are as follows:

[0029] Weigh 0.1 mol of arginine, 0.1 mol of tryptophan, 0.1 mol of phenylalanine and 0.3 mol of choline in 100 mL of deionized water, stir at room temperature until it is completely dissolved, and transfer the mixed solution to a microwave reactor , and then set it at 300 W at 75 o C was reacted for 2 h, and then the mixed solution was transferred to a rotary evaporator to distill off excess water under reduced pressure to obtain a white amino acid ionic liquid mixture.

[0030] 2) The preparation steps of polysulfonic acid and ionic liquid are as follows:

[0031] Mix 1,4-butane sultone and hexamethylenetetraammonium in a molar ratio of 6:1 and place it in a microwave reactor, and set it at 90 under the power of 200 W o C was reacted for 4h, and then the sample was taken out for vacuum filtration and dried to obtain an intermediate product; concentrated sulfuric acid was added dropwise to the obtaine...

Embodiment 2

[0036] 1) The steps of compound amino acid ionic liquid are as follows:

[0037] Weigh 0.1 mol of arginine, 0.1 mol of tryptophan, 0.1 mol of phenylalanine and 0.3 mol of choline and dissolve them in 500 mL of deionized water, stir at room temperature until they are completely dissolved, and transfer the mixed solution to a microwave reactor , and then set it at 300 W at 75 o C was reacted for 2 h, and then the mixed solution was transferred to a rotary evaporator to distill off excess water under reduced pressure to obtain a white amino acid ionic liquid mixture.

[0038] 2) The preparation steps of polysulfonic acid, ionic liquid and N-hydroxyphthalimide / acrylic acid / 2-acrylamide-2 methylpropanesulfonic acid copolymer are the same as in Example 1;

[0039] The components in the corrosion and scale inhibitor are calculated by weight ratio: compound amino acid ionic liquid 35%, polysulfonate ionic liquid 5%, sodium gluconate, 16%, N-hydroxyphthalimide / acrylic acid / 2-acrylam...

Embodiment 3

[0041] 1) The steps of compound amino acid ionic liquid are as follows:

[0042] Weigh 0.1 mol of arginine, 0.1 mol of tryptophan, 0.1 mol of phenylalanine and 0.3 mol of choline and dissolve them in 300 mL of deionized water, stir at room temperature until they are completely dissolved, and transfer the mixed solution to a microwave reactor , and then set it at 300 W at 75 o C was reacted for 2 h, and then the mixed solution was transferred to a rotary evaporator to distill off excess water under reduced pressure to obtain a white amino acid ionic liquid mixture.

[0043] 2) The preparation steps of polysulfonic acid, ionic liquid and N-hydroxyphthalimide / acrylic acid / 2-acrylamide-2 methylpropanesulfonic acid copolymer are the same as in Example 1;

[0044] The components in the corrosion and scale inhibitor are calculated by weight ratio: 28% compound amino acid ionic liquid, 8% polysulfonate ionic liquid, 13% sodium gluconate, N-hydroxyphthalimide / acrylic acid / 13% of 2-a...

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Abstract

The invention discloses an environment-friendly corrosion and scale inhibitor, which is composed of a compound amino acid ionic liquid, a polysulfonate ionic liquid, sodium gluconate, an N-hydroxyphthalimide/acrylic acid/2-acrylamide-2-methylpropanesulfonic acid copolymer, ammonium tungstate, polyvinyl alcohol, tea polyphenol and water. The molar ratio of [choline] [arginine] to [choline] [tryptophan] to [choline] [phenylalanine] in the compound amino acid ionic liquid is 1: 1: 1; and the multi-sulfonate ionic liquid is prepared from 1, 4-butane sultone and hexamethylenetetramine. The corrosion and scale inhibitor disclosed by the invention has the advantage of no phosphorus, and can greatly reduce the pollution to the environment in the use process; and an excellent corrosion and scale inhibition effect can be achieved at a relatively low concentration.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to an environment-friendly corrosion and scale inhibitor suitable for circulating cooling water and a preparation method thereof. Background technique [0002] At present, water treatment technology has become an important means to save water, control water pollution and rationally develop water resources. Water treatment technology is a technology that treats polluted water bodies through a series of physical, chemical and biological means so that it can meet environmental needs, people's lives and industrial production. In the whole industry, the consumption of cooling circulating water accounts for 70%~80%, especially in petroleum, chemical industry, metallurgy and power generation industries, the proportion of circulating water is higher, accounting for more than 90% of the entire industrial water use. When the cooling water is in use, it will be continuousl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12C08F220/06C08F220/58C02F103/02
CPCC02F5/12C02F2103/023C02F2303/08C08F220/06C08F220/585
Inventor 王强
Owner 王强
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