Deoxidization corrosion inhibitor as well as preparation method and application thereof

A technology of corrosion inhibitor and deoxidizer, which is applied in the field of water treatment, can solve the problems of poisonous deoxidizer and corrosion inhibitor, poor deoxygenation and slow-release effect in the polluted environment, and achieves no increase in environmental pollution and simple and easy preparation method Line, hardness reduction effect

Inactive Publication Date: 2018-06-15
郑州拓洋生物工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first object of the present invention is to provide a kind of deoxidation and corrosion inhibitor, which is mainly made of raw materials such as pre-film agent, deoxidizer, inhibitor, pH regulator and water, and through the synergistic effect between the above-mentioned raw materials, the obtained The obtained oxygen scavenging and corrosion inhibitor has a good oxygen scavenging and slow-release effect, which improves the problems that the existing oxygen scavenging and corrosion inhibitor is toxic, pollutes the environment and has poor oxygen scavenging and slow-release effect

Method used

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  • Deoxidization corrosion inhibitor as well as preparation method and application thereof
  • Deoxidization corrosion inhibitor as well as preparation method and application thereof

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Embodiment approach

[0052] As a preferred embodiment of the present invention, the pre-filming agent is zinc sulfate and sodium tripolyphosphate;

[0053] Taking the oxygen scavenging and corrosion inhibitor as the calculation basis, the weight percentage of the zinc sulfate is 0.1-0.2%, and the weight percentage of the sodium tripolyphosphate is 0.1-2.8%.

[0054] Zinc sulfate is a common pre-filming agent. It is used in combination with sodium tripolyphosphate, which can make up for the shortcoming of slow film formation of inhibitors and enhance the corrosion inhibition effect of the composite corrosion inhibitor.

[0055] Typical but non-limiting weight percents of zinc sulfate are 0.1%, 0.12%, 0.14%, 0.15%, 0.16%, 0.18%, or 0.20%.

[0056] Typical but non-limiting weight percentages of sodium tripolyphosphate are 0.1%, 0.5%, 1.0%, 1.2%, 1.5%, 1.8%, 2.0%, 2.2%, 2.5%, 2.8% or 3.0%.

[0057] As a preferred embodiment of the present invention, the oxygen-scavenging corrosion inhibitor includes ...

Embodiment 1

[0074] A kind of oxygen removal and corrosion inhibitor provided by the present embodiment comprises the following raw materials in weight percentage:

[0075] Zinc sulfate 0.2%, sodium tripolyphosphate 1.2%, sodium erythorbate 10%, sodium polyepoxysuccinate 2.5%, sodium hexametaphosphate 2.5%, polyaspartic acid 1%, sodium hydroxide 5%, balance Make up with water; the degree of polymerization of sodium polyepoxysuccinate is 25.

[0076] The preparation method of this deoxidation corrosion inhibitor comprises the following steps:

[0077] Add a certain amount of water into the reactor with agitator and heater, and start to heat up. When the water temperature reaches 40°C, turn on the stirring device and start stirring, and then add zinc sulfate, sodium tripolyphosphate, sodium erythorbate, Sodium polyepoxysuccinate, sodium hexametaphosphate and polyaspartic acid are used to adjust the pH value of the solution to 10-12 with sodium hydroxide, and stirred for 20 minutes to obtain...

Embodiment 2

[0079] The oxygen scavenging and corrosion inhibitor provided in this embodiment, except that the weight percentage of sodium hexametaphosphate in the raw material of the oxygen scavenging and corrosion inhibitor is 5%, the rest of the raw materials, dosage and preparation method are the same as those in Example 1.

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Abstract

The invention provides a deoxidization corrosion inhibitor as well as a preparation method and application thereof and relates to the technical field of water treatment. The deoxidization corrosion inhibitor is mainly prepared from raw materials such as a pretreatment filming agent, a deoxidizing agent, an inhibitor, a pH regulator and water, wherein the deoxidizing agent comprises erythorbic acidand / or sodium erythorbate; and the inhibitor comprises sodium epoxysuccinate, sodium hexametaphosphate and polyaspartic acid. Due to the synergistic effect of all the raw materials, the obtained deoxidization corrosion inhibitor is capable of rapidly removing dissolved oxygen in boiler water, solving the corrosion problem of a boiler, a pipeline and a heat exchanger, keeping the oxygen content ofthe boiler water within a natural standard range after being used, reducing the hardness of the boiler water and reducing the formation of water scales, and meanwhile, the deoxidization corrosion inhibitor is safe, nontoxic, incapable of increasing environment pollution and capable of adapting to various requirements for water quality. In addition, the invention further provides a preparation method of the deoxidization corrosion inhibitor, and the preparation method is simple, easy and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to an oxygen-scavenging corrosion inhibitor and a preparation method and application thereof. Background technique [0002] Boiler equipment is an indispensable energy supply equipment for industrial development. Boiler corrosion and protection are one of the important measures to ensure boiler safety, efficient production, and economical operation. In the boiler components, the corrosion of dissolved oxygen and the generation of scale will affect the service life of the boiler, and will also corrode the boiler and pipe network, causing leakage and even explosion. The most commonly used method to slow down and inhibit corrosion is to reduce the concentration of dissolved oxygen in boiler water by controlling the oxygen content of feed water, and select appropriate oxygen scavenger and corrosion inhibitor to slow down and inhibit the occurrence of oxygen corrosion and slow do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/20C23F11/10C23F11/18C02F103/02
CPCC02F1/20C02F2103/02C23F11/10C23F11/188
Inventor 肖媛李月番程喜梅赵建波苟丽莉张生克刘银霞史小利闫世梁崔凤霞周俊俊高莉曹晓伟王敬臣秦天苍
Owner 郑州拓洋生物工程有限公司
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