Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Patent
1976-03-03
1980-06-17
Peters, G. O.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
B01D 5334
Patent
active
042083869
ABSTRACT:
Method for reducing NO.sub.x in combustion effluents comprising introducing urea at elevated temperatures in the presence of oxygen, either as a solid or solution in amounts sufficient to reduce the NO.sub.x concentration. Conveniently, the urea may be introduced as a solid powder or as a solution in a hydroxylic solvent, at temperatures in excess of 1300.degree. F. and in the presence of at least 0.1 volume percent oxygen.
This invention was made under contract with or supported by the Electric Power Research Institute.
REFERENCES:
patent: 3565575 (1971-02-01), Warshaw
patent: 3801696 (1974-04-01), Mark
patent: 3846981 (1974-11-01), Paczkowski
patent: 3867507 (1975-02-01), Myerson
patent: 3900554 (1975-08-01), Lyon
patent: 4061597 (1977-12-01), Goldstein et al.
Hach's Chem. Dict.-4th Ed.-1969-pp. 702, 703.
Perry's Chem. Engr. Handbook-4th Ed.-1963-pp. 3-42.
Arand John K.
Muzio Lawrence J.
Sotter John G.
Electric Power Research Institute Inc.
Peters G. O.
Rowland Bertram I.
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