Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Reexamination Certificate
2005-06-02
2009-08-04
Vanoy, Timothy C (Department: 1793)
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
C423S236000, C431S002000, C431S005000, C431S174000, C110S210000, C110S214000
Reexamination Certificate
active
07569200
ABSTRACT:
The present invention relates to a method for reducing nitrogen oxide emissions in combustion. Fuel is combusted in a first zone, whereby nitrogen oxides are generated. Supplementary fuel is fed in another zone under reducing conditions. At the same time, the temperature is adjusted so that nitrogen oxides convert essentially to hydrogen cyanide. Finally, air is fed in for finalizing the combustion and converting the hydrogen cyanide into nitrogen.
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Coda Zabetta Edgardo
Hupa Mikko
Saviharju Kari
Andritz Oy
Nixon & Vanderhye P.C.
Vanoy Timothy C
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