DENITRATION METHOD OF PROCESSED GAS CONTAINING NOX

PROBLEM TO BE SOLVED: To improve an extraction ratio to a relatively low-concentration NOx gas.SOLUTION: A denitration method of a processed gas containing NOx comprises a step of carrying out ozone oxidation of NOx which is a processed gas component in the processed gas, and of carrying out absorpt...

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Bibliographic Details
Main Authors NAGAO HITOSHI, YAMAUCHI SHIRO, YASUDA MASAHIRO, ASANO HIDEAKI, FUJITA TOMIO
Format Patent
LanguageEnglish
Published 07.01.2013
Subjects
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Summary:PROBLEM TO BE SOLVED: To improve an extraction ratio to a relatively low-concentration NOx gas.SOLUTION: A denitration method of a processed gas containing NOx comprises a step of carrying out ozone oxidation of NOx which is a processed gas component in the processed gas, and of carrying out absorption removal of a remaining NOx component in the processed gas after the ozone oxidation by an absorbing liquid. In the method, a denitration method of the processed gas containing NOx, in which ozone is added to both of the processed gas and the absorbing liquid, is provided. A molar ratio to ozone supplied to the processed gas is to be within a range from 0.1 to twice, and ozone of 1 ppm or more and of a saturated concentration or less is to be in advance added to the absorbing liquid.
Bibliography:Application Number: JP20110137278