Abstract
The emissions of nitrous oxide (N2O) contribute to the destruction of stratospheric ozone as well as to the greenhouse-effect of the earth. Because of this, the emissions from human sources must be limited to values as low as technically possible.
Concerning combustion, only the emissions from circulating fluidized bed combustors reach higher levels: concentrations of about 200 vppm were measured. This paper deals with parametric studies to reduce these emissions. Therefore, different coals were burnt in an electrically heated combustion chamber at temperatures between 700 °C and 1000 °C at different coal/air ratios. Based on the results of this experimental research, the effect of staged combustion on the reduction of nitrous oxide was investigated. Air-staged combustion with preheated air showed a decrease in N2O emissions. Reburning can be considered as the most effective way to reduce this nitrogen oxide; especially the use of methane or natural gas as secondary fuel leads to remarkable reduction rates of N2O at lower temperatures.
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© 1994 Springer Science+Business Media Dordrecht
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Arthkamp, J., Kremer, H. (1994). N2O Reduction in Coal Flames by Staged Combustion. In: van Ham, J., Janssen, L.J.H.M., Swart, R.J. (eds) Non-CO2 Greenhouse Gases: Why and How to Control?. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0982-6_36
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DOI: https://doi.org/10.1007/978-94-011-0982-6_36
Publisher Name: Springer, Dordrecht
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