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A corrosion and scale inhibitor for circulating cooling water

A corrosion and scale inhibitor and circulating cooling water technology, applied in the field of water treatment, can solve the problems of high strength of circulating cooling water, serious scaling, high alkalinity, etc., achieve odorless dispersion performance, good corrosion inhibition, good The effect of anti-scaling effect

Active Publication Date: 2016-08-24
佛山市南海区巨人化学品制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Circulating cooling water plays a pivotal role in the cooling system, but the circulating cooling water used has high strength, high alkalinity, and serious fouling characteristics. When the water temperature is higher than the ambient temperature, the formation of inorganic salts such as calcium carbonate Dirt can have serious consequences
When it is used as a cooling medium in an industrial cooling circulating water system, it will cause deterioration of water quality, corrosion and scaling, etc., resulting in blockage or leakage of heat exchangers and pipes, seriously affecting the normal operation of production equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A corrosion and scale inhibitor for circulating cooling water, consisting of the following components by weight:

[0039] Amino trimethylene phosphonic acid 5 parts

[0040] 2 parts polyacrylic acid

[0041] 7 parts copper sulfate

[0042] Sodium metabisulfite 1 part

[0043] Potassium nitrate 1 part.

[0044] Using the corrosion and scale inhibitor described in Example 1 makes the corrosion inhibition effect reach 97%, so that the corrosion rate is reduced to 0.003mm / a.

Embodiment 2

[0046] The corrosion and scale inhibitor for circulating cooling water consists of the following components by weight:

[0047] Amino trimethylene phosphonic acid 5.7 parts

[0048] Polyacrylic acid 2.45 parts

[0049] 7.3 parts of copper sulfate

[0050] Sodium metabisulfite 1.2 parts

[0051] Potassium nitrate 1.6 parts.

[0052] Using the corrosion and scale inhibitor described in Example 2 makes the corrosion inhibition effect reach 97.8%, so that the corrosion rate is reduced to 0.0029mm / a.

Embodiment 3

[0054] The corrosion and scale inhibitor for circulating cooling water consists of the following components by weight:

[0055] Amino trimethylene phosphonic acid 6.4 parts

[0056] 3.8 parts of polyacrylic acid

[0057] 8.4 parts of copper sulfate

[0058] Sodium metabisulfite 1.32 parts

[0059] Potassium nitrate 2.26 parts.

[0060] Using the corrosion and scale inhibitor described in Example 3 makes the corrosion inhibition effect reach 98.3%, so that the corrosion rate is reduced to 0.0027mm / a.

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Abstract

The invention belongs to the technical field of water treatment, and particularly relates to a corrosion and scale inhibitor for circulating cooling water. The corrosion and scale inhibitor for circulating cooling water comprises the following components in parts by weight: amino trimethylene phosphonic acid, polyacrylic acid, copper sulfate, sodium pyrosulfite and potassium nitrate. The corrosion and scale inhibitor is convenient to use, low in toxicity, tasteless and good in dispersing performance.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a corrosion and scale inhibitor for circulating cooling water. Background technique [0002] Circulating cooling water plays a pivotal role in the cooling system, but the circulating cooling water used has high strength, high alkalinity, and serious fouling characteristics. When the water temperature is higher than the ambient temperature, the formation of inorganic salts such as calcium carbonate Dirt can have serious consequences. When it is used as a cooling medium in an industrial cooling circulating water system, it will cause deterioration of water quality, corrosion and scaling, etc., resulting in blockage or leakage of heat exchangers and pipes, seriously affecting the normal operation of production equipment. With the rapid development of social economy and technological progress, water treatment technology has been paid more and more attention. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/14C02F5/08C02F5/10
CPCC02F5/105C02F5/145C02F2103/023C02F2303/08C02F2303/22
Inventor 邓庆安李连珍邓佑雄
Owner 佛山市南海区巨人化学品制造有限公司
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