overfire air

overfire air

Secondary air which is introduced in a furnace above the grate to complete combustion and to produce turbulence, thereby increasing the efficiency of the combustion process.
References in periodicals archive ?
Evaluation of staged air and overfire air in regulating air-staging conditions within a large-scale down-fired furnace, Applied Thermal Engineering: 97-105.
Electrostatic precipitators (ESP) particulate matters (PM), Flue Gas Desulphurization (FGD) to control Sox and Low Nox burners with overfire Air Ports and selective Catalytic Reduction (SCR) system.
The company's nitrogen oxide (NOx) reduction technologies include advanced combustion modification techniques -- such as low NOx burners and overfire air systems -- and post-combustion NOx control approaches, including NOxOUT and HERT(TM) SNCR systems, as well as systems that incorporate NOxOUT CASCADE, NOxOUT ULTRA, Rich Reagent Injection (RRI) and NOxOUT-SCR processes.
Vierstra, "Use of CFD Modeling to Guide Design and Implementation of Overfire Air for NOx Control in Coal-Fired Boilers," Proceedings of Nineteenth Annual International, Pittsburgh Coal Conference, Pittsburgh, PA, U.
x] burners (LNBs), reburning, overfire air (OFA), flue gas recirculation (FGR), and modifications to the "three T's.
Products include fuel atomizers, aerodynamic flame stabilizers and overfire air systems, as well as modeling and support services for non-catalytic and catalytic NOx reduction systems for boilers and process heaters.
The burner section was modified to slurry coal clinker burning zone that facilitates optimization of the lower and upper overfire air windbox.
into the boiler through four rows of overfire air ports, two on the front
Combustion air is introduced as either undergrate air (UGA) or overfire air (OFA).