| Autor: |
Arunava Dutta, T. Z. Chaung, Peter M. Walsh, Adel F. Sarofim, János M. Beér |
| Rok vydání: |
1982 |
| Předmět: |
|
| Zdroj: |
Symposium (International) on Combustion. 19:1281-1289 |
| ISSN: |
0082-0784 |
| Popis: |
Nitric oxide mole fractions of 650 to 1350 ppm were observed in the combustion productsnear the bed surface during fluidized combustion of bitminous coal. Reduction of NO to N 2 in the freeboard above the bed decreased NO to the characteristically low levels (80–400 mol ppm) observed in the exhaust from fluidized bed combustors. The experimentally measured variations of NO with height in the freeboard are compared with the predictions of a semi-empirical model in which NO reduction is assumed to occur by reaction with entrained coal char. The concentration of char particles is determined from measured bed properties using mechanistic models for the initial particle flux at the bed surface and the motion of particles in the freeboard. The nitric oxide reduction predicted by the model is in good agreement with the reduction observed in five of the six sets of measurements. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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