Release of fuel-bound nitrogen in biomass during high temperature pyrolysis and gasification
- Resource Type
- Conference
- Authors
- Jiachun Zhou; Masutani, S.M.; Ishimura, D.M.; Turn, S.Q.; Kinoshita, C.M.
- Source
- IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203) Energy conversion engineering Energy Conversion Engineering Conference, 1997. IECEC-97., Proceedings of the 32nd Intersociety. 3:1785-1790 vol.3 1997
- Subject
- Power, Energy and Industry Applications
Nitrogen
Biomass
Fuels
Inductors
Fluidization
Air pollution
Combustion
Mechanical engineering
Temperature distribution
Hydrogen
- Language
Pyrolysis and gasification of two biomass feedstocks with significantly different fuel-bound nitrogen (FBN) content were investigated to determine the effect of operating conditions on the partitioning of FBN among gas species. Experiments were performed in a bench-scale, indirectly-heated, fluidized bed reactor. Data were obtained over a range of temperatures and equivalence ratios representative of commercial biomass gasification processes. An assay of all major nitrogenous components of the gasification products was performed for the first time, providing a clear accounting of the evolution of FBN. Results indicate that: (1) NH/sub 3/ is the dominant nitrogenous gas species produced during pyrolysis of biomass; (2) the majority of FBN is converted to NH/sub 3/ or N/sub 2/ during gasification; relative levels of NH/sub 3/ and N/sub 2/ are determined by thermochemical reactions which are affected strongly by temperature; and (3) N/sub 2/ appears to be produced from NH/sub 3/ in the gas phase.