PURPOSE: To keep high denitration power and reduce NOx concentration in exhaust gas by installing a denitration device in such a manner that reducing agent is injected into exhaust gas from many jet nozzles and then mixed fluid of reducing agent and exhaust gas is denitrated by passing through a reactor.
CONSTITUTION: A denitration device is composed of reducing agent injection nozzles 32 which inject reducing agent such as ammonia gas from reducer system into exhaust gas and a reactor where exhaust gas with injected reducing agent is reacted through the catalyst layer of iron oxide system and said gas is reduced and decomposed into nitrogen and steam. Dampers 38 control the flow rate of gas passing through it and make uniform the flowing volume into the catalyst layer 41. The reactor 31 is composed of the catalyst layer 41 loaded with catalyst of iron oxide system, support members 35 and partition plate 37. When the exhaust gas flowing down from the dampers 38 flows up through the catalyst layer 41 from the under side of support members 35, NOx is decomposed by the action of catalyst.
INUI TAIJI
YOKOI YASUAKI
| JPS5241701A | 1977-03-31 |