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.