CURRENT-SUPPLYING HEATING TYPE CATALYST

摘要

PURPOSE:To heat catalyst partially, and prevent oxidation reaction heat from escaping outside. CONSTITUTION:Current-carrying heating type catalyst 9 composed of a layered structure body of metallic thin plates and metallic corrugated plates in formed of an upstream catalyst 14 and a downstream catalyst 15. The outer peripheral part of the upstream catalyst 14 is connected to an electrode 19, and an electric surrent is supplied to the downstram catalyst 15 from the upstream catalyst 14 through the central part 13 of the layered structure body. At this time, only a heating area 27 positioned in the vicinity of the upstream end surface of the upstream catalyst 14 is partially heated.