Formation of NOx precursors during the pyrolysis of coal and biomass. Part VII. Pyrolysis and gasification of cane trash with steam |
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Authors: | Fu-Jun Tian Lachlan J Mckenzie Tadatoshi Chiba |
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Affiliation: | a Department of Chemical Engineering, Monash University, P.O. Box 36, Victoria 3800, Australia b Centre for Advanced Research of Energy Conversion Materials, Hokkaido University, N13-W8, Kita-Ku, Sapporo 060-8628, Japan |
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Abstract: | Biomass-nitrogen conversion during the pyrolysis and gasification of a cane trash in steam was investigated using a fluidised-bed/fixed-bed reactor and a fluidised-bed/tubular reactor. Our results indicate that the thermal cracking of volatile-N is the main route of HCN formation although the thermal cracking of char-N also contributes to the formation of HCN. There are three major routes of NH3 formation: ‘hydrolysis’ of N-containing structures in the solid phase during the primary pyrolysis, thermal cracking and gasification of solid nascent char as well as the thermal cracking and reforming of volatile-N. Under the current experimental conditions, the hydrolysis of HCN does not appear to be an important route of NH3/HNCO formation. |
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Keywords: | HCN NH3 NOx precursors Cane trash Pyrolysis and gasification |
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