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High-temperature pre-filming corrosion and scale inhibitor

A pre-film corrosion and scale inhibitor technology, applied in the field of water treatment, can solve problems such as corrosion, and achieve the effects of long service life, stable concentration and simple operation

Active Publication Date: 2014-02-05
吴桥县银晶助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a high-temperature pre-film corrosion and scale inhibitor to solve the problem of serious corrosion of equipment in the prior art for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] A high-temperature pre-film corrosion and scale inhibitor, characterized in that it is made by mixing the following components by weight: 25% of compounding additives, 45% of corrosion inhibitors, and 30% of dispersants, and the compounding additives consist of the following: The above weight ratio components are mixed and prepared: phosphorus base 35%, molybdenum base 30%, barium base 20%, strontium base 15%.

[0022] The corrosion inhibitor is imidazoline.

[0023] The dispersant is sodium polyacrylate.

[0024] When the high-temperature pre-film corrosion and scale inhibitor is used, first clean the device and change the water to minimize impure water and system impurities, and then add high-temperature pre-film corrosion and scale inhibitor to discharge and clean the water in the system , to discharge the rust in the form of complexes, and then add a large amount of high-temperature pre-film corrosion and scale inhibitors for pre-film and passivation treatment, and...

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PUM

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Abstract

The invention discloses a high-temperature pre-filming corrosion and scale inhibitor, which is prepared from the following components in percentage by weight by mixing: 20-30% of a compound additive, 30-50% of a corrosion inhibitor and 20-50% of a dispersant, wherein the compound additive is prepared from the following components in percentage by weight by mixing: 5-40% of a phosphorus base, 5-35% of a molybdenum base, 5-25% of a barium base and 10-20% of a strontium base. The high-temperature pre-filming corrosion and scale inhibitor disclosed by the invention is simple to operate and easy to control; after the high-temperature pre-filming corrosion and scale inhibitor is completely dissolved in circulating water, a stable protective film can be formed on the pipe wall of a device and micropores are filled; the inhibitor is small in application amount and stable in concentration; a formed passivation film is stable at a high temperature of 120 DEG C; and the inhibitor is obvious in corrosion inhibition effect and long in service life, and reduces complexes generated by chloride ions and other heavy metals.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a high-temperature pre-film corrosion and scale inhibitor. Background technique [0002] Process converters in the polyvinyl chloride industry generally use hot water for heat exchange, which leads to increasingly prominent converter leakage problems, which not only affects normal production, but also increases the consumption of equipment accessories. Long-term corrosion leads to short service life of equipment. With the innovation of science and technology, the emergence of pre-film corrosion and scale inhibitors (hot water buffer) has been widely promoted and used. [0003] At present, the pre-coated corrosion and scale inhibitors on the market are effective in the initial use, but gradually lose their activity as time goes on, and have to be added regularly and the concentration needs to be high. The cost and effect are not satisfactory. Commercially available pre-coa...

Claims

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Application Information

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IPC IPC(8): C02F5/08C02F5/12
Inventor 刘金朝
Owner 吴桥县银晶助剂有限公司