High-temperature anti-sticking coating capable of catalytically decomposing dioxins

Abstract

The invention relates to a high-temperature anti-sticking coating capable of catalytically decomposing dioxins. The high-temperature anti-sticking coating is prepared from the following components in percentage by weight: 35 to 70 percent of a ceramic filler, 15 to 55 percent of a binder and 0.5 to 5 percent of Yb / Tm co-doped fluoride nanocrystal. In the Yb / Tm co-doped fluoride nanocrystal, in terms of 100 mol% of fluoride, the doping amount of Tm is 0.1 to 2 mol%, and the doping amount of Yb is 0.5 to 5 mol%; the average particle size of the nanocrystal is 20-100 nm, and the nanocrystal can absorb visible light or infrared light and convert the visible light or infrared light into ultraviolet light. The characteristic that Yb / Tm co-doped fluoride nanocrystals absorb visible light / infrared light to generate up-conversion luminescence is utilized, purple light emission is achieved, then the photolysis reaction of dioxins is caused, and visible light and infrared light radiation generated by incineration of the incinerator is also recycled to a certain extent. Fluoride is selected from calcium fluoride, barium fluoride and strontium fluoride, is not only a good luminescent material matrix, but also a good lubricating material, and has a remarkable effect on the anti-bonding performance of the coating.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a high-temperature coating capable of resisting high temperature and preventing adhesion in a high-temperature environment and capable of catalytically decomposing dioxins. Background technique [0002] With the development of my country's economy, the urban population is increasing rapidly, and the domestic waste is also increasing. The current methods of waste disposal include landfill and incineration. Landfill will inevitably lead to secondary pollution. At present, the more effective way is to dispose of garbage through incineration. The waste incineration process inevitably faces the problem of boiler corrosion under high temperature environment. At the same time, due to the complex composition of waste, new pollutants will be produced during the incineration process. Dioxin is currently the most concerned pollutant. [0003] For the protection of pipelines and boile...

AI Technical Summary

Problems solved by technology

[0010] At present, the incineration temperature in the waste incinerator is basically set above 850°C to achieve the effective decomposition of dioxins. At this temperature, a large amount of visible light and infrared light will be generated in the furnace at the same time, and this part of energy has not been fully utilized.

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