M.c. Gill Corporation

Ronald D Bell

Eugene C McGill

An improved process for disposal of chemically bound nitrogen in industrial waste streams is provided wherein a effluent stream containing chemically bound nitrogen, such as ammonia stream, is contacted with an effective amount of oxygen containing gas and a stoichiometric excess of a hydrocarbon, based on the total amount of available oxygen, at a temperature greater than about 2000.degree. F. or less than 3000.degree. F., to provide a combustion effluent. The combustion effluent is thereafter contacted with an effective amount of a gaseous stream containing less oxygen than that which supports flame propagation at a temperature in the range of from about 1600.degree. F. to about 1800.degree. F., to substantially oxidize all combustibles present in the combustion effluent and provide an oxidation effluent substantially free of oxides of nitrogen (NO.sub.x) and combustibles. The oxidation effluent may be cooled in heat exchange equipment to recover energy, recycled to support the combustion and/or the oxidation of the combustibles, or vented to the atmosphere.

Process of conversion for disposal of chemically bound nitrogen in

An improved process for reducing the concentration of oxides of nitrogen (NO.sub.x) in a waste stream is provided wherein an effluent stream containing oxides of nitrogen (NO.sub.x) is burned at a temperature greater than about 2000.degree. F. and less than about 3000.degree. F. with an effective amount of an oxygen containing gas and a stoichiometric excess of a hydrocarbon, based on the total amount of available oxygen, to provide a combustion effluent. The combustion effluent is thereafter contacted, at a temperature in the range of from about 1600.degree. F. to about 1800.degree. F., with an effective amount of a gaseous stream containing less than 21 volume percent oxygen to substantially oxidize all combustibles present in the combustion effluent and provide an oxidation effluent substantially free of oxides or nitrogen (NO.sub.x) and combustibles. The oxidation efluent may be cooled in heat exchange equipment to recover energy, recycled to support the combustion and/or the oxidation of the combustibles, or vented to the atmosphere.

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Tulsa, OK, United States of America

Ronald D Bell