Fuel-gas-catalyzed flameless near-infrared indirect heating porous medium burner

Abstract

The invention discloses a fuel-gas-catalyzed flameless near-infrared indirect heating porous medium burner, and relates to burners. The burner comprises a burner body, an inner refractory brick layer and an outer refractory brick layer; the outer refractory brick layer is internally provided with a gas inlet channel and a gas outlet channel, the inner refractory brick layer is internally provided with a pre-mixed gas diffusion chamber, a perforated plate, a pre-mixed gas voltage-sharing chamber, a flame-resistant protective screen plate and a foamed ceramic plate; the pre-mixed gas diffusion chamber is communicated with a pre-mixed gas supply pipe, and the outer refractory brick layer arranged on the foamed ceramic plate is provided with high-temperature-resistant infrared silica glass which blocks a burning opening; an upper compressing plate is arranged above the high-temperature-resistant infrared silica glass, a lower compressing plate is arranged on the lower end face of the burner body, and the upper compressing plate is connected with the lower compressing plate through a fastening piece. According to the fuel-gas-catalyzed flameless near-infrared indirect heating porous medium burner, during burning, smoke and flames are not generated, the heating efficiency is high, heating is even, the emission of NOX can be reduced, the burner can be used for an annealing technology where burner atmosphere needs to be ensured, and during the burning, the radiation intensity is high; the fuel-gas-catalyzed flameless near-infrared indirect heating porous medium burner has the advantages that the installation is convenient, the service life is long, the energy is saved, the environment is protected, and the application range is wide; the burner is easy to use and popularize.

Description

technical field [0001] The invention relates to a burner, in particular to a gas catalytic flameless near-infrared indirect heating porous medium burner. Background technique [0002] At present, the combustion of gaseous fuels in my country's industrial production is mainly space combustion characterized by free flames. The temperature gradient near the flame surface of this combustion method is steep and the temperature distribution is uneven. The existence of local high-temperature areas causes a large amount of NO X At the same time, there are still problems such as incomplete combustion, low thermal efficiency, poor combustion stability, and high emissions of combustion pollutants. The patent with the authorized public number CN101929676B discloses a catalytic porous media burner. It can effectively reduce the emission of combustion pollutants, but because the premixed gas directly enters the catalytic metal fiber felt and ceramic foam from the premixed chamber through ...

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Problems solved by technology

[0002] At present, the combustion of gaseous fuels in my country's industrial production is mainly space combustion characterized by free flames. The temperature gradient near the flame surface of this combustion method is steep and the temperature distribution is uneven. The existence of local high-temperature areas causes a large amount of NO X At the same time, there are still problems such as incomplete combustion, low thermal efficiency, poor combustion stability, and high emissions of combustion pollutants. The patent with the authorized public number CN101929676B discloses a catalytic porous media burner. It can effectively reduce the emission of combustion pollutants, but because the premixed gas directly enters the catalytic metal fiber felt and ceramic foam from the premixed chamber through the porous plate for combustion, the distribution of the premixed gas is still not uniform enough, so that the heating temperature distribution is not uniform enough. Its heating efficiency is still low

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