Browse by author
Lookup NU author(s): Emeritus Professor Mark ThomasORCiD
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
The emissions of nitrogen oxides during coal combustion contribute to acid rain and are a major environmental problem. In this investigation, the release of nitric oxide during the combustion of coal chars prepared from a wide range of coals in an entrained flow reactor was investigated over a range of combustion temperatures (823 - 1323K) using a thermogravimetric analyzer coupled with a mass spectrometer. The conversion of char nitrogen to NO (NO/char-N) was studied in relation to coal and char structural characterization parameters. The results show that higher levels of conversion of char-N to NO were observed for the high-rank coal chars at lower combustion temperatures, where the reaction is under chemical control. As the combustion temperature increased, there was a decrease in the NO/char- N conversion ratio. Chars with low surface areas and low reactivities tend to have higher levels of conversion of char N to NO during combustion. The implications for the mechanism of NO reduction on the char surface and in the pores are discussed.
Author(s): Harding AW, Brown SD, Thomas KM
Publication type: Article
Publication status: Published
Journal: Combustion and Flame
Year: 1996
Volume: 107
Issue: 4
Pages: 336-350
Print publication date: 01/12/1996
ISSN (print): 0010-2180
ISSN (electronic): 1556-2921
Publisher: Elsevier
URL: http://dx.doi.org/10.1016/S0010-2180(96)00080-6
DOI: 10.1016/S0010-2180(96)00080-6
Altmetrics provided by Altmetric