METHOD AND DEVICE FOR TREATING DIESEL EXHAUST GAS

PROBLEM TO BE SOLVED: To provide a diesel exhaust gas treatment method obtaining high denitration performance even though exhaust gas temperature is low. SOLUTION: In this diesel exhaust gas treatment method for introducing exhaust gas to an NOx removal catalyst bed 5 and catalytically reducing and...

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Bibliographic Details
Main Authors IMADA NAOMI, HAMADA IKUHISA, KATO YASUYOSHI
Format Patent
LanguageEnglish
Published 30.09.2004
Edition7
Subjects
BLASTING
ENGINE PLANTS IN GENERAL
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
STEAM ENGINES
TRANSPORTING
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide a diesel exhaust gas treatment method obtaining high denitration performance even though exhaust gas temperature is low. SOLUTION: In this diesel exhaust gas treatment method for introducing exhaust gas to an NOx removal catalyst bed 5 and catalytically reducing and removing NOx after exhaust gas delivered from a diesel engine 1 is introduced to a DPF3 with an oxidation catalyst and PM (particulate matters) in exhaust gas is removed, means for injecting a reducing agent for NOx are respectively arranged in the front stage of the DPF3 with the oxidation catalyst and in the front stage of the NOx removal catalyst bed 5, and a reducing agent injecting position is changed over based on exhaust gas temperature. COPYRIGHT: (C)2004,JPO&NCIPI
Bibliography:Application Number: JP20030061385