EXHAUST GAS TREATMENT SYSTEM AND TREATMENT METHOD

EXHAUST GAS TREATMENT SYSTEM AND TREATMENT METHOD

The present invention provides a flue gas treatment system and a flue gas treatment method that enable the stable long-term operation of a plant by reducing NO x in a combustion flue gas and reducing the concentration of SO 3 more compared with that available conventionally. The flue gas treatment m...

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Hauptverfasser: MIYOSHI, TAKAHITO, MASUDA, TOMOTSUGU, HIGASHINO, KOJI
Format: Patent
Sprache:eng ; fre ; ger
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CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
THEIR RELEVANT APPARATUS
TRANSPORTING
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creator MIYOSHI, TAKAHITO
MASUDA, TOMOTSUGU
HIGASHINO, KOJI
description The present invention provides a flue gas treatment system and a flue gas treatment method that enable the stable long-term operation of a plant by reducing NO x in a combustion flue gas and reducing the concentration of SO 3 more compared with that available conventionally. The flue gas treatment method of removing NO x and SO 3 in the gas that includes NO x and SO 3 includes a denitration and SO 3 reduction step of denitrating the gas and reducing SO 3 into SO 2 , in which NH 3 as a first additive and a second additive including one or more selected from the group consisting of an olefinic hydrocarbon expressed by a general formula: C n H 2n (n is an integer of 2 to 4) and a paraffinic hydrocarbon expressed by a general formula: C m H 2m+2 (m is an integer of 2 to 4) are added to the gas before bringing the gas into contact with a catalyst.
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subjects CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
THEIR RELEVANT APPARATUS
TRANSPORTING
title EXHAUST GAS TREATMENT SYSTEM AND TREATMENT METHOD
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