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A kind of circulating water corrosion inhibitor and preparation method thereof

A technology of corrosion and scale inhibitors and circulating water, which is applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc. Reduced scale efficiency, large consumption of chemicals, etc., to achieve the effect of inhibiting corrosion reaction, inhibiting oxygen corrosion, and reducing deposition

Active Publication Date: 2019-01-25
内蒙古润嘉节能环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, urban sewage contains a large amount of inorganic ions (such as Ca 2+ , Mg 2+ , SO 4 2- ) and a small amount of organic matter, especially Ca 2+ , Mg 2+ , SO 4 2- Under the conditions of several times of concentration and high temperature, it is easy to cause mineral scale to form on the surface of the circulating cooling water system equipment, and the high salinity under the concentration condition will make the corrosion problem of the system more serious
At the same time, scaling and corrosion are the key problems in the circulating cooling water system. People often add scale and corrosion inhibitors to the circulating water system to alleviate and control the scaling and corrosion of the system. Since sewage has a stronger The original corrosion and scale inhibitor formulations are no longer applicable, and the development of new corrosion and scale inhibitors based on the quality of urban sewage biochemical effluent water is a key technology to solve the problem of urban sewage reuse as circulating cooling water
[0004] In the invention whose application number is CN200610127172.0, an environment-friendly corrosion and scale inhibitor is disclosed for the treatment of circulating cooling water, which is characterized in that the corrosion inhibitor in the environment-friendly composite scale It is composed of one or more substances in acid salts, organic substituted carboxylic acids or organic heterocyclic compounds, and the antiscalant component is composed of natural polymer compounds, epoxy succinic acid substances or acrylic acid terpolymers Composed of one or more substances, it has the advantages of strong scale inhibition ability and good corrosion inhibition effect, but the concentration of the agent added is 300-500mg / L, and the consumption of the agent is too large, resulting in high treatment costs
[0005] In the invention whose application number is CN201210116459.9, a cooling water corrosion and scale inhibitor is disclosed, which is characterized in that the corrosion and scale inhibitor is mainly composed of organic phosphonic acid corrosion inhibitor, organic polyphosphonic acid corrosion and scale inhibitor agent, polymer antiscalant, metal ion chelating agent, surfactant, zinc salt, functional additives and water. This formula is used in the concentrated treatment of high-salt wastewater, especially in high-salt, high-conductivity wastewater. Its corrosion and scale inhibition efficiency is greatly reduced under the condition of supplementary water

Method used

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preparation example Construction

[0031] A preparation method of circulating water corrosion and scale inhibitor, which comprises steps:

[0032] S100 Stir each component of the corresponding mass percentage at normal temperature and pressure for 30 minutes, and mix uniformly to obtain a mixture; and

[0033] In S200, the mixture is placed in a reaction kettle equipped with ultrasonic waves, and treated under the action of ultrasonic waves to prepare the circulating water corrosion and scale inhibitor.

[0034] Wherein, the power of the ultrasonic wave in the step S200 is 100w-500w, and the processing time of the ultrasonic wave is 2h-5h.

[0035] Preferably, the power of the ultrasonic wave is 300w, and the treatment time of the ultrasonic wave is 3h.

[0036] The circulating cooling water corrosion and scale inhibitor has a wide range of raw material sources, low production cost, and can achieve excellent corrosion and scale inhibition effects at a relatively low concentration during use, further saving tre...

Embodiment 1

[0041] The mass percent of the raw materials of the circulating water corrosion and scale inhibitor is: 20% polyacrylamide, 15% 2-hydroxyphosphonic acid, 5% polyepoxysuccinic acid, 10% anthocyanin, 20% tea poly Phenol, 10% melamine, 20% isophorone diamine, and the rest is a mixed solution of ethylene glycol and water. After the above-mentioned components were mixed evenly, they were treated under the action of 300w ultrasonic waves for 3 hours, and the measured corrosion inhibition rate was 85.2%, and the scale inhibition rate was 82.3%.

Embodiment 2

[0043] The mass percent of raw materials for the circulating water corrosion and scale inhibitor is: 25% polyacrylamide, 20% 2-hydroxyphosphonic acid, 5% polyepoxysuccinic acid, 10% anthocyanin, 20% tea poly Phenol, 5% melamine, 15% isophorone diamine, and the rest is a mixed solution of ethylene glycol and water. After the above-mentioned components were mixed evenly, they were treated under the action of 300w ultrasonic waves for 3 hours, and the measured corrosion inhibition rate was 83.1%, and the scale inhibition rate was 81.6%.

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Abstract

The invention relates to a circulating water corrosion and scale inhibitor and a preparation method thereof. The circulating water corrosion and scale inhibitor mainly comprises polyacrylamide, 2-hydroxyphosphonoacetic acid, polyepoxysuccinic acid, anthocyanidins, tea polyphenol, melamine, isophorondiamine, ethylene glycol and water. The circulating water corrosion and scale inhibitor is suitable for industrial circulating cooling water systems to realize pre-film corrosion, scale prevention and corrosion inhibition of high-salinity wastewater in the circulating cooling water.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a corrosion and scale inhibitor suitable for circulating cooling water and a preparation method thereof. Background technique [0002] At present, more than 70% of cities in my country are facing the crisis of water shortage, while industrial water accounts for about 80% of urban water supply, and circulating cooling water accounts for more than 70% of industrial water consumption. Although saving water, improving technology, increasing water prices and remote water transfer have all alleviated the water shortage problem to varying degrees, all countries in the world are currently using urban sewage for industrial circulating water systems as the first choice to solve the water shortage problem. Utilizing urban sewage for industrial circulating cooling water, on the one hand, the discharge of a large amount of urban sewage pollutes the environment and wastes resources; on the other...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/14
CPCC02F5/14C02F2303/08C02F2303/22
Inventor 刘勇魏亮翁挺
Owner 内蒙古润嘉节能环保科技有限公司
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