ON-SITE REGENERATION METHOD FOR DENITRIFICATION CATALYST IN EXHAUST GAS PURIFICATION SYSTEMS

摘要

In an exhaust gas purification system provided with a denitration catalyst layer (1), a reducing agent oxidation catalyst layer (2) is installed together; a reducing agent and air are supplied into the reducing agent oxidation catalyst layer (2) at the time of catalyst regeneration of the denitration catalyst layer (1); a high-temperature oxidation reaction gas is produced by a reaction heat generated by an oxidation reaction of the reducing agent and the air in this reducing agent oxidation catalyst layer (2); and this high-temperature oxidation reaction gas is introduced into the denitration catalyst layer (1) to heat the denitration catalyst, thereby recovering a denitration performance of the catalyst.