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Scale and corrosion inhibitor and production method and application thereof

A scale and corrosion inhibitor, acrylic acid technology, applied in the direction of chemical instruments and methods, descaling and water softening, special treatment goals, etc., can solve problems affecting the normal production of enterprises, equipment corrosion and scaling, equipment wear and tear, etc., to achieve guarantee Normal and good operation, good corrosion inhibition, good compatibility effect

Inactive Publication Date: 2019-08-16
ENERGY RESOURCES INST HEBEI ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the continuous increase of the concentration multiple, the concentration of various ions in the circulating water is also doubling, which is more likely to cause equipment corrosion and scaling. Some traditional water treatment chemicals cannot meet the current complex water quality requirements. Equipment Scaling and corrosion are serious, and a large number of heat exchange equipment are scrapped in advance due to corrosion, resulting in serious equipment wear and tear and affecting the normal production of enterprises. Therefore, it is urgent to solve these problems by the compatibility of agents with excellent scale and corrosion inhibition performance

Method used

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  • Scale and corrosion inhibitor and production method and application thereof
  • Scale and corrosion inhibitor and production method and application thereof
  • Scale and corrosion inhibitor and production method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A scale and corrosion inhibitor, the mass percentage of each component is as follows:

[0034]

[0035] The acrylic acid-maleic anhydride copolymer used in this embodiment is an aqueous solution of acrylic acid-maleic anhydride copolymer with an active ingredient content of 50%; 2-hydroxyphosphonoacetic acid is a 2-hydroxyphosphonoacetic acid with an active ingredient content of 50%. Aqueous solution; acrylic acid-sulfonate copolymer is an aqueous solution of acrylic acid-sulfonate copolymer with an active ingredient content of 40%, hexadecyldimethyl(2-sulfite)ethylammonium and disodium edetate For pure products.

[0036] The preparation method comprises the following steps: 1) adding 30 kg of acrylic acid-maleic anhydride copolymer and 10 kg of 2-hydroxyphosphonoacetic acid into the container, adding water and stirring to make the acrylic acid-maleic anhydride copolymer and 2-hydroxyphosphonoacetic acid evenly mixed, Then add 12.5 kg of acrylic acid-sulfonate copol...

Embodiment 2

[0048] A scale and corrosion inhibitor, the mass percentage of each component is as follows:

[0049]

[0050] The preparation method is the same as in Example 1.

[0051] 1. Test and results

[0052] 1. Test conditions: Apply the scale and corrosion inhibitor of this example, the added concentration is 20mg / L, the circulating cooling system of an iron and steel enterprise has been continuously operated for 30 days, and the concentration of circulating water is 5-6 times higher. At the same time, the on-site For the scale and corrosion test of the hanging piece, the water quality of the test is on-site water, and the water quality is the same as Table 1.

[0053] 2. Test results:

[0054] During the experiment, during the entire 30-day operation period, the system operated stably and well without scaling and corrosion. At the end of the experiment, the surface of the heat exchanger in the on-site circulating cooling water system still maintained the original metallic lust...

Embodiment 3

[0060] A scale and corrosion inhibitor, the mass percentage of each component is as follows:

[0061]

[0062] The preparation method is the same as in Example 1.

[0063] 1. Test and results

[0064] 1. Test conditions: Apply the scale and corrosion inhibitor of this example, the added concentration is 30mg / L, and the circulating cooling system of an iron and steel enterprise has been continuously operated for 30 days, and the concentration of circulating water is 7-8 times higher. At the same time, the on-site For the scale and corrosion test of the hanging piece, the water quality of the test is on-site water, and the water quality is the same as Table 1.

[0065] 2. Test results:

[0066] During the experiment, during the entire 30-day operation period, the system operated stably and well without scaling and corrosion. At the end of the experiment, the surface of the heat exchanger in the on-site circulating cooling water system still maintained the original metallic ...

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Abstract

The invention discloses a scale and corrosion inhibitor and a production method and application thereof, and belongs to the technical field of circulating cooling water treatment agents. The scale andcorrosion inhibitor comprises the following components in percentage by mass: 5-20% of acrylic acid-maleic anhydride copolymer, 1-9% of 2-hydroxyphosphonoacetic acid, 2-6% of acrylic acid-sulfonate copolymer, 0.5-2% of N,N-dimethyl-N-(2-sulfoethyl)-1-hexadecanaminium, 0.5-4% of disodium ethylene diamine tetraacetate and the balance water. The scale and corrosion inhibitor is suitable for the requirements of high-salt high-concentration complex water quality of enterprises, and is especially suitable for high-concentration high-corrosivity circulating cooling water systems of high salt, high chloride, high sulfate and the like, the problem of serious corrosion and scale of equipment due to a high concentration multiple of circulating cooling water is effectively solved, beneficial technical support is provided for high-concentration-multiple operating conditions of the circulating cooling water of the enterprises, the service life of the equipment is prolonged, the production cost is reduced, and normal good operation of the circulating cooling water systems is ensured.

Description

technical field [0001] The invention relates to the technical field of circulating cooling water treatment agents, in particular to a scale and corrosion inhibitor. Background technique [0002] With the continuous deepening of energy saving and emission reduction, enterprises have upgraded and transformed their technologies. At present, most of the circulating cooling water systems have realized high concentration multiple operation, generally 4 to 5 times, and the water reuse rate has been greatly improved, reaching or approaching. The level of developed countries in Europe and America. However, with the continuous increase of the concentration multiple, the concentration of various ions in the circulating water is also doubling, which is more likely to cause equipment corrosion and scaling. Some traditional water treatment chemicals cannot meet the current complex water quality requirements. Equipment Scaling and corrosion are serious, and a large number of heat exchange...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/10C02F5/12C02F5/14
CPCC02F5/10C02F5/12C02F5/14C02F2303/08
Inventor 田彩利田晓军李娜李海花
Owner ENERGY RESOURCES INST HEBEI ACADEMY OF SCI
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