Ronald R Bell

US Patent:

45199930, May 28, 1985

Filed:

Aug 15, 1983

Appl. No.:

6/523644

Inventors:

Eugene C. McGill - Skiatook OK
Ronald D. Bell - Tulsa OK

Assignee:

McGill Incorporated - Tulsa OK

International Classification:

C01B 2100
B01D 4700

US Classification:

423235

Abstract:

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.

US Patent:

44055870, Sep 20, 1983

Filed:

Feb 16, 1982

Appl. No.:

6/348840

Inventors:

Eugene C. McGill - Skiatook OK
Ronald D. Bell - Tulsa OK

Assignee:

McGill Incorporated - Tulsa OK

International Classification:

C01B 2100
B01D 4700

US Classification:

423235

Abstract:

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.