Formation and destruction of nitrogenous oxides during ammonia injection
- Huazhong Univ. of Science and Technology, Wuhan, Hubei (China). National Lab. of Coal Combustion
The objective of this paper was to investigate the effect of ammonia (NH{sub 3}) addition on NO and N{sub 2}O reduction. The experiment about the influence of temperature, the molar ratio of NH{sub 3} to NO and oxygen concentration on reduction and formation of NO and N{sub 2}O was performed on a small fluidized bed combustor. NO{sub x} reduction was also investigated and the mechanism was analyzed. The results revealed that the most important factors affecting reduction and formation of NO and N{sub 2}O are temperature and oxygen concentration. There is a corresponding maximum NO reduction when either temperature or oxygen concentration changes. Limestone and bed ash have some catalytic effect on NO reduction. Heterogeneous catalytic reduction makes the temperature of NO reduction decrease and NO reduction maintain a relatively high level within a comparatively wide temperature range.
- OSTI ID:
- 357857
- Report Number(s):
- CONF-9705116--; ISBN 0-7918-1557-9
- Country of Publication:
- United States
- Language:
- English
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