Boiler pre-filming corrosion and scale inhibitor

Abstract

The invention discloses a boiler pre-filming corrosion and scale inhibitor. The boiler pre-filming corrosion and scale inhibitor comprises a pretreatment filming agent, a deoxidizing agent, a scale inhibitor, a pH regulator and a solvent, wherein the pretreatment filming agent is composed of one or more of zinc sulfate, zinc chloride and sodium silicate; the deoxidizing agent is composed of one or more of azodicarbonamide, sodium sulfite and erythorbic acid; the scale inhibitor is composed of one or more of polyepoxy sodium succinate, ethylenediamine tetraacetic acid disodium and sodium polyacrylate; the pH regulator is sodium hydroxide, potassium hydroxide or a mixture of the both; the solvent is water. By virtue of the method, the boiler pre-filming corrosion and scale inhibitor can effectively prevent corroding and scaling from the heat transfer surface of the boiler, enables the boiler to achieve excellent heat transfer performance and prolongs the service life of the boiler, synchronously overcomes the pollution problem of the environment due to the conventional water treatment agent, is beneficial to sustainable development of the environment, and is prepared from non-toxic raw materials, so that the boiler scale dispersing agent is of high safety.

Description

technical field [0001] The invention relates to a water treatment agent, in particular to a boiler pre-film corrosion and scale inhibitor. Background technique [0002] A boiler consists of two parts: a pot and a furnace. The original meaning of a pot refers to a water container heated on a fire, and the furnace refers to a place where fuel is burned. The hot water or steam generated in the boiler can directly provide the required heat energy for industrial production and people's life, and can also be converted into mechanical energy through a steam power device, or converted into electrical energy through a generator, and the boiler as the heart of the industry is heating, Widely used in power generation and other fields. [0003] During the use of the boiler, the heat transfer surface of the boiler and the water pipe is in a high-temperature and high-pressure environment. On the one hand, calcium and other components contained in the boiler feed water are deposited on th...

AI Technical Summary

Problems solved by technology

[0003] During the use of the boiler, the heat transfer surface of the boiler and the water pipe is in a high-temperature and high-pressure environment. On the one hand, calcium and other components contained in the boiler feed water are deposited on the heat transfer surface in the form of scale, and the scale of the boiler heat transfer area will be reduced. Heat conduction efficiency increases energy consumption, and at the same time, due to poor heat conduction efficiency, the temperature of the heating surface will increase and the metal strength of the heating surface will be reduced, thus causing boiler safety accidents

On the other hand, the heat transfer surface of the boiler will be corroded by the boiler feed water, which will affect the service life of the boiler

At present, more than 99% of commonly used corrosion and scale inhibitors are phosphorus-based formulas. The large discharge of phosphorus compounds leads to eutrophication of water bodies, and the proliferation of algae in lakes causes water quality to deteriorate.

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