CATALYST AND CATALYZED COMBUSTION DEVICE USED THEREWITH

摘要

PURPOSE:To provide a catalyst and a catalyzed combustion device wherein a catalytic layer is preheated in a short time and heat generated by reaction is uniformized by the catalytic layer and performance is maintained stably in a long time. CONSTITUTION:This catalyzed combustion device is equipped with a mixing chamber 6 for premixing fuel and air, a catalytic layer 7 which is positioned in the downstream side of the mixing chamber 6 and has many communication holes and an exhaust port 11 equipped in the downstream side of the catalystic layer 9. A structural body is formed by combining a sheet metal with a paper layer constituted of heat resistant inorganic fiber as a main component, corrugating and working the combined material. The catalytic layer 9 is constituted by dispersing and carrying catalytic metal on at least the paper layer constituted of heat resistant inorganic fiber as the main component in the structural body. The catalytic metal carried on the paper layer constituted of inorganic fiber having small heat capacity as the main component is preheated at the sufficient temperature in a comparatively short time. Further, since heat of reaction generated by catalyzed combustion is transmitted by the sheet metal whose heat conductivity is excellent, temperature difference in a range from the upstream part of the catalytic layer to the downstream part thereof is made small.