Microwave sintering method of ceramic coating

Abstract

A ceramic coating mixed with an ignition agent is sprayed on parts such as a high-temperature superheater of a boiler, a water cooling wall and a furnace tube of a heating furnace, and is scanned and sintered by a portable microwave sintering device after being dried. The microwave scanning sintering has the characteristics of easy temperature control, stability and good sintering surface consistency. The microwave-sintered ceramic coating can give full play to the characteristics of corrosion resistance, contamination resistance and slagging resistance of the ceramic coating. The ceramic coating is especially suitable for urban waste incineration boilers. The portable microwave sintering device is composed of a magnetron, a connecting flange, a shielding shell, a smoke exhaust pipeline, a fan, a microwave trap filter and a waveguide. Manual or robot scanning operation is adopted, and safety and high efficiency are achieved.

Description

Technical field [0001] It is a special paint industry, microwave sintering technology. Background technique [0002] The ceramic coating is applied to a boiler superheater, water wall tubes and other parts of the furnace, corrosion-resistant, anti-staining, anti-slagging, increase the heat transfer, reduces boiler maintenance and many other benefits. Currently, the industry has been widely accepted and widely used. [0003] Chinese Patent CN104446325A discloses a high temperature resistant, anti-staining, anti-slagging ceramic coating, its preparation method and application method. Prepared in accordance with the technical solution ceramic coatings it has been widely used in coal-fired boilers, especially in power generation boilers and boiler to be fully recognized by the user. [0004] With the popularity of the application, in addition to other coal-fired boilers have begun to use this technology. Since the fuel difference, shape difference furnace, as a result of different te...

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Problems solved by technology

The content of fluorine, chlorine, bromine and other elements carried in urban waste fuel is very small in coal or natural gas fuel, especially the chlorine content in flue gas is dozens or even hundreds of times that of fossil fuels such as coal and natural gas. The CN104446325A formula contains Some components can effectively resist the corrosion of the above elements on the boiler, but it is still insufficient when the concentration is high

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