Covanta Energy Corporation

Christopher A Bradley

Robert L Barker

Stephen Goff

Mark L White

Stephen G Deduck

John D Clark

Zenon Semanyshyn

Stephen P Goff

Through the addition of tertiary air and a reduction of secondary air, NOx emissions from a waste-to-energy (WTE) boiler may be reduced. The tertiary air is added to the WTE at a distance from the secondary air, in a boiler region of relatively lower temperatures. A secondary NOx reduction system, such as a selective non-catalytic reduction (SNCR) system using ammonia or urea, may also be added to the boiler with tertiary air to achieve desirable high levels of NOx reductions. The SNCR additives are introduced to the WTE boiler proximate to the tertiary air.

Tertiary air addition to solid waste-fired furnaces for NOx control

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Elizabethtown, PA, United States of America

Christopher A Bradley