Publicado 8 números por año
ISSN Imprimir: 2150-3621
ISSN En Línea: 2150-363X
Indexed in
N2O REDUCTION IN A BUBBLING FLUIDIZED BED REACTOR BY INJECTION OF HYDROCARBON FUELS
SINOPSIS
N2O reduction by the injection of hydrocarbon fuels (C2H6 and C3H8) has been experimentally investigated in a bench-scale, electrically heated, bubbling fluidized bed stainless steel reactor. Experimental results show that the injection of a hydrocarbon fuel is a very effective method to reduce N2O and up to 90% N2O reduction has been achieved for each fuel. From the thermal input point of view, C3H8 is slightly more effective than C2H6 in reducing N2O. Under otherwise identical conditions, the presence of the bed material (sand) in the reactor enhances the N2O reduction achieved by the injection of hydrocarbon fuels. Halving the residence time from 3 s to 1.5 s has little influence on the N2O reduction achieved both with and without the presence of the bed material in the reactor. Gas-phase modeling (using a detailed combustion/nitrogen mechanism, SENKIN and CHEMKIN programs) of N2O reduction by the injection of C2H6 and C3H8 indicates that N2O decomposition is not the dominant N2O reduction mechanism compared with the radicals’ reactions. Predicted N2O reductions are also in good agreement with the experimental results.