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Corrosion mitigation and scale inhibition method for aluminum heat exchanger

A technology of corrosion and scale inhibition and corrosion and scale inhibitors, which is applied in chemical instruments and methods, descaling and water softening, complex/solubilizing agent treatment, etc., can solve the problems of unfriendliness and high phosphorus content, and achieve easy Simple manufacturing and production process, good corrosion inhibition effect

Inactive Publication Date: 2015-04-22
赵哲 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems that there is no high-efficiency corrosion and scale inhibition method suitable for aluminum heat exchangers in the prior art and the corrosion and scale inhibitors have high phosphorus content and are unfriendly to the environment, human body and crops, the present invention provides an aluminum heat exchanger. The corrosion and scale inhibition method for heat exchangers, the corrosion and scale inhibitor of the present invention has the advantages of no phosphorus, safe and environmentally friendly components, simple production process, high scale inhibition efficiency, good corrosion inhibition performance, etc., and belongs to the environment-friendly corrosion inhibition agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (a) Prepare a slow-release scale inhibitor. The components of the slow-release scale inhibitor and the mass parts of each component are: 10 parts of polyaspartic acid, 25 parts of sodium silicate, and 15 parts of diethyl phthalate Glycol diacrylate, 15 parts polydienylpropylenedimethylammonium chloride, 8 parts hexamethylenetetramine, 16 parts bis(hydroxymethyl) imidazolidinyl urea, 10 parts methylisothiazolinone , 5 parts of trehalose, 10 parts of tris, 68 parts of water;

[0032] (b) adding the slow-release scale inhibitor prepared in step (a) to the circulating cooling water, wherein the concentration of the slow-release scale inhibitor in the circulating cooling water is 500 ppm;

[0033] (c) Pass the circulating cooling water containing the slow-release scale inhibitor in step (b) into the aluminum heat exchanger to perform the heat exchange process.

[0034] Wherein, the step of preparing corrosion and scale inhibitor in step (a) is:

[0035] (1) Weigh 10 parts ...

Embodiment 2

[0044] (a) Prepare a slow-release scale inhibitor. The components of the slow-release scale inhibitor and the mass parts of each component are: 15 parts of polyaspartic acid, 20 parts of sodium silicate, and 13 parts of diethyl phthalate Glycol diacrylate, 20 parts polydienylpropylenedimethylammonium chloride, 12 parts hexamethylenetetramine, 10 parts bis(hydroxymethyl) imidazolidinyl urea, 5 parts methylisothiazolinone , 10 parts of trehalose, 8 parts of tris, 60 parts of water.

[0045] (b) adding the slow-release scale inhibitor prepared in step (a) to the circulating cooling water, wherein the concentration of the slow-release scale inhibitor in the circulating cooling water is 700 ppm;

[0046] (c) Pass the circulating cooling water containing the slow-release scale inhibitor in step (b) into the aluminum heat exchanger to perform the heat exchange process.

[0047] Wherein, the step of preparing corrosion and scale inhibitor in step (a) is:

[0048] (1) Weigh 15 parts ...

Embodiment 3

[0057] (a) Prepare a slow-release scale inhibitor. The components of the slow-release scale inhibitor and the mass parts of each component are: 12 parts of polyaspartic acid, 30 parts of sodium silicate, and 10 parts of diethyl phthalate Glycol diacrylate, 18 parts polydienylpropylenedimethylammonium chloride, 15 parts hexamethylenetetramine, 18 parts bis(hydroxymethyl) imidazolidinyl urea, 8 parts methylisothiazolinone , 7 parts of trehalose, 12 parts of tris, 80 parts of water.

[0058] (b) adding the slow-release scale inhibitor prepared in step (a) to the circulating cooling water, wherein the concentration of the slow-release scale inhibitor in the circulating cooling water is 800 ppm;

[0059] (c) Pass the circulating cooling water containing the slow-release scale inhibitor in step (b) into the aluminum heat exchanger to perform the heat exchange process.

[0060] Wherein, the step of preparing corrosion and scale inhibitor in step (a) is:

[0061] (1) Weigh 12 parts ...

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PUM

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Abstract

The invention discloses a corrosion mitigation and scale inhibition method for an aluminum heat exchanger, belonging to the field of water treatment. A corrosion mitigation and scale inhibition agent used in the invention comprises polyaspartic acid, sodium silicate, phthalic diglycol diacrylate, poly(diallyldimethylammonium chloride), hexamethylenetetramine, bis(hydroxymethyl)-imidazolidinyl urea, methylisothiazolinone, trehalose, trihydroxymethyl aminomethane and water. The corrosion mitigation and scale inhibition agent prepared through an appropriate technical process has the advantages of storage stability, safe and environment-friendly components, no environmental pollution and the like, has excellent corrosion mitigation effect on an aluminum heat exchanger, is simple in preparation method, reasonable in design and easy to prepare, and has favorable application prospects.

Description

technical field [0001] The invention belongs to the field of water treatment, and more specifically relates to a corrosion and scale inhibition method for an aluminum heat exchanger. Background technique [0002] Due to the increasing shortage of fresh water resources, more and more people pay more and more attention to circulating cooling water treatment chemicals in the industry. The circulating cooling water is accompanied by the whole process of production, accounting for 70-80% of the total water consumption. The circulating cooling water is constantly used in the process of use. Evaporation and concentration make the scaling and corrosion of the cooling water pipe more serious, and it is easy to breed bacteria and algae, which affects the heat transfer effect of the equipment and shortens the service life of the equipment. In order to solve these problems, the circulating cooling water must be treated for water quality. Organic phosphonic acid is a type of water treatm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12C02F5/10C02F5/08
Inventor 程迎春
Owner 赵哲
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