Anti-corrosive paint and application thereof

Abstract

The invention discloses an anti-corrosive paint which is prepared from the following raw materials: modified organic silicone resin, graphite powder, a filling material, a curing agent, solvents and other auxiliary agents. A production method of preparing the anti-corrosive paint from the above-mentioned components is as follows: the modified organic silicone resin, pigments, the filling material, the auxiliary agents and the like are mixed in proportion, and the mixture is uniformly dispersed with appropriate grinding and dispersing equipment; the rest solvents and auxiliary agents are addedin the mixture and evenly mixed with the mixture under stirring, and the curing agent is added before utilization of the obtained mixture. According to construction requirements, the paint provided in the invention is applied on the surface of the inner liner of a chimney used in wet desulphurization and can meet operating requirements of acid resistance, heat resistance, resistance to extreme coldness and heat, crack resistance, anti-permeability, scour resistance and the like after undergoing cross-linking and curing under certain conditions.

Description

technical field [0001] The invention relates to a coating and its application, in particular to an anti-corrosion coating and its application. Background technique [0002] my country's energy is dominated by coal, and coal-fired power plants all over the country emit a large amount of SO 2 and SO 3 Air pollutants such as air pollutants are one of the main causes of acid rain. The implementation of desulfurization and emission reduction in thermal power plants has become a major starting point for the country to achieve the overall goal of energy conservation and emission reduction strategies. [0003] Although there are many desulfurization methods, the most economical and mature method is the limestone-gypsum wet method, which accounts for about 85% in my country. However, wet desulfurization will emit acidic wet flue gas with a pH value of about 2, which is extremely corrosive and destructive to chimney and flue corrosion, which seriously threatens the safe operation o...

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Problems solved by technology

However, wet desulfurization will emit acidic wet flue gas with a pH value of about 2, which is extremely corrosive and destructive to chimney and flue corrosion, which seriously threatens the safe operation of thermal power plants

[0004] The anticorrosion of chimneys and flues mainly uses materials such as foam glass bricks and vinyl ester glass flake anticorrosion coatings at present. acid-corroded coatings, but its anti-corrosion effect when applied to wet desulfurization chimneys is not good; at present, other cases of anti-corrosion coating engineering failures are common, indicating that the performance of existing anti-corrosion coatings cannot well meet the requirements of desulfurization chimneys and flues. The operating conditions are required, the main reason is that the resistance to cold and heat alternating impact is poor, and it is easy to break and fall off.

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