Selective gas-phase nox reduction in gas turbines

Details Selective gas-phase nox reduction in gas turbines Selective gas-phase nox reduction in gas turbines

1991-04-03

1993-04-06

Bertsch, Richard A.

Power plants

Combustion products used as motive fluid

60 3905, F02G 300

Patent

active

051992558

ABSTRACT:
Nitrogen oxides are reduced in gas turbines by selective, gas-phase reaction with urea. This is enabled in a preferred embodiment by injecting urea as an aqueous solution of droplet sizes and concentration effective to assure selective gas phase reactions to result in NO.sub.x reduction. The aqueous solution can also be employed to reduce NO.sub.x by reducing the flame temperature. Desirably, the injection parameters are controlled to also minimize ammonia production.

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Hilt, M. B. and Wasio, J., Evolution of NOx Abatement Techniques Through Combuster Design for Heavy-Duty Gas Turbines, Journal of Engineering for Gas Turbines and Power, vol. 106, p. 626, Oct. 1984.

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