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Corrosion and scale inhibition method for aluminum heat exchanger

A technology of corrosion and scale inhibition, corrosion and scale inhibitor, applied in chemical instruments and methods, scale removal and water softening, complex/solubilizer treatment, etc., can solve the problems of high phosphorus content and unfriendly The production process is simple, easy to manufacture, and the effect of improving the use effect

Inactive Publication Date: 2016-08-24
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 corrosion and scale inhibition method for aluminum heat exchangers, the steps are:

[0032] (A) Preparation of slow-release scale inhibitor, the composition of the slow-release scale inhibitor and the mass parts of each component are: 10 parts polyaspartic acid, 25 parts sodium silicate, 15 parts diethyl phthalate Glycol diacrylate, 15 parts of polydienyl propylene dimethyl ammonium chloride, 8 parts of hexamethylene tetramine, 16 parts of bis(hydroxymethyl) imidazolidinyl urea, 10 parts of methyl isothiazolinone , 5 parts trehalose, 10 parts tris, 68 parts water;

[0033] (B) Add the slow-release scale inhibitor prepared in step (a) to the circulating cooling water, where the concentration of the slow-release scale inhibitor in the circulating cooling water is 500 ppm;

[0034] (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.

[0035] Wherein, the steps of pr...

Embodiment 2

[0044] A corrosion and scale inhibition method for aluminum heat exchangers, the steps are:

[0045] (A) Preparation of slow-release scale inhibitor, the composition of the slow-release scale inhibitor and the mass parts of each component are: 15 parts of polyaspartic acid, 20 parts of sodium silicate, 13 parts of diethyl phthalate Glycol diacrylate, 20 parts of polydienyl propylene dimethyl ammonium chloride, 12 parts of hexamethylene tetramine, 10 parts of bis(hydroxymethyl) imidazolidinyl urea, 5 parts of methyl isothiazolinone , 10 parts of trehalose, 8 parts of Tris, 60 parts of water.

[0046] (B) Add the slow-release scale inhibitor prepared in step (a) to the circulating cooling water, where the concentration of the slow-release scale inhibitor in the circulating cooling water is 700 ppm;

[0047] (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.

[0048] Wherei...

Embodiment 3

[0057] A corrosion and scale inhibition method for aluminum heat exchangers, the steps are:

[0058] (A) Preparation of slow-release scale inhibitor, the composition of the slow-release scale inhibitor and the mass parts of each component are: 12 parts polyaspartic acid, 30 parts sodium silicate, 10 parts diethyl phthalate Glycol diacrylate, 18 parts of polydienyl propylene dimethyl ammonium chloride, 15 parts of hexamethylene tetramine, 18 parts of bis(hydroxymethyl) imidazolidinyl urea, 8 parts of methyl isothiazolinone , 7 parts trehalose, 12 parts tris, 80 parts water.

[0059] (B) Add the slow-release scale inhibitor prepared in step (a) to the circulating cooling water, where the concentration of the slow-release scale inhibitor in the circulating cooling water is 800 ppm;

[0060] (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.

[0061] Wherein, the steps of pr...

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PUM

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Abstract

The invention discloses a corrosion and scale inhibition method for an aluminum heat exchanger, which belongs to the field of water treatment. The corrosion and scale inhibitor used in the present invention consists of polyaspartic acid, sodium silicate, diethylene glycol diacrylate phthalate, polydienyl propylene dimethyl ammonium chloride, hexamethylene Composed of tetramine, bis(hydroxymethyl)imidazolidinyl urea, methylisothiazolinone, trehalose, trishydroxymethylaminomethane and water, the corrosion and scale inhibitors prepared through a suitable process have long-lasting storage , the components are safe and environmentally friendly, and have no pollution to the environment. It has excellent corrosion inhibition effect on aluminum heat exchangers. Its preparation method is simple, its design is reasonable, and it is easy to manufacture. It has a good application prospect.

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 Patents(China)
IPC IPC(8): C02F5/12C02F5/10C02F5/08
Inventor 钟国平
Owner 赵哲
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