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- W138827097 abstract "Publisher Summary This chapter describes the solid-catalyzed N 2 O destruction in combustion of coal. It has been reported that NO x emission increases as combustion temperature increases whereas nitrous oxide emission exhibits exactly the opposite trend. Because of its low-temperature operating regime, fluidized-bed combustion turns out to be a strong source of N 2 O. At low temperatures, nearly all N 2 O formed during combustion comes from coal-bound nitrogen. Nitrous oxide formation may occur either in the gas phase mainly following rapid coal devolatilization or it may result from heterogeneous reactions taking place on the char surface. N 2 O decomposition, primarily through reduction to N 2 , may again follow along gas-phase or surface-catalyzed pathways. The amount of N 2 O that does not decompose constitutes the final flue gas emission. Introducing 3% of finely dispersed calcium onto the carbon surface results in reduction of N 2 O levels by an order of magnitude. This remarkable result cannot be matched by simple addition of lime to Norit, in which case, N 2 O emission drops by about 50%. It is found that replacement of carborundum with lime for a bed material causes a similar reduction of N 2 O levels." @default.
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- W138827097 date "1991-01-01" @default.
- W138827097 modified "2023-10-15" @default.
- W138827097 title "SOLID-CATALYSED N2O DESTRUCTION IN COMBUSTION OF COAL" @default.
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- W138827097 doi "https://doi.org/10.1016/b978-0-7506-0387-4.50115-7" @default.
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