Process for reducing nitrogen oxide emissions in medium with excess of oxidants

The process enables the reduction of nitrogen oxides to nitrogen in a gaseous medium containing 1 - 20% of oxygen with a minimum emission of nitrous oxide. The process for reducing the emission of nitrogen oxides in a super stoichiometric oxidizing atmosphere comprises: (a) An oxidation stage in the...

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Bibliographic Details
Main Authors MARTIN, BRIGITTE, MABILON, GIL, BOUCHEZ, MATTHIAS, BOURGES, PATRICK
Format Patent
LanguageEnglish
French
German
Published 12.10.2005
Edition7
Subjects
BLASTING
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
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
THEIR RELEVANT APPARATUS
TRANSPORTING
WEAPONS
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Summary:The process enables the reduction of nitrogen oxides to nitrogen in a gaseous medium containing 1 - 20% of oxygen with a minimum emission of nitrous oxide. The process for reducing the emission of nitrogen oxides in a super stoichiometric oxidizing atmosphere comprises: (a) An oxidation stage in the presence of an oxidizing material; (b) Injection of organic compounds , the molecules comprising at least one atom of C, H, O or N; (c) Adsorption of the organic compound on an adsorbing material in the form of molecular species and/or carbonaceous residues; and (d) Selective reduction of the nitrogen oxides to molecular nitrogen. An Independent claim is also included for the use of the process to reduce nitrogen oxide emission to meet the demands of environmental regulations.
Bibliography:Application Number: EP19990402399