Clough, J
1989
Biomass Combustion: Relationship Between Pollutant Formation and Fuel Composition
Winter, R.M.; Clough, J.; Overmoe, B.J. and Pershing, D.W.
Tappi Journal, 72(4):139-145, 1989. Funded by Weyerhaeuser Corp.
A 65-kW refractory-walled reactor was used to study biomass combustion under conditions typical of the suspension-burning phase in a spreader-stoker-fired boiler. Isothermal combustion data and nitric oxide (NO) emission rates were obtained as a function of temperature, local oxygen concentration, and vertical velocity for sized biomass fuels. Two softwoods, a hardwood, and a North Carolina peat were studied.
The pyrolytic C, H, and N data confirmed the overall high volatility, relative to coal, of these biomass fuels. Particulate emissions were correlated to vertical velocity and particle geometry, but were found to be relatively insensitive to combustion-zone oxygen, temperature, and biomass composition, NO emissions are strongly dependent on combustion-zone oxygen concentration and the nitrogen content of the biomass fuel. NO emissions increased dramatically with increasing excess air and increasing fuel nitrogen; however, these emissions were relatively insensitive to both temperature and moisture content.
Clough, J
1989
Biomass Combustion: Relationship Between Pollutant Formation and Fuel Composition
Winter, R.M.; Clough, J.; Overmoe, B.J. and Pershing, D.W.
Tappi Journal, 72(4):139-145, 1989. Funded by Weyerhaeuser Corp.
A 65-kW refractory-walled reactor was used to study biomass combustion under conditions typical of the suspension-burning phase in a spreader-stoker-fired boiler. Isothermal combustion data and nitric oxide (NO) emission rates were obtained as a function of temperature, local oxygen concentration, and vertical velocity for sized biomass fuels. Two softwoods, a hardwood, and a North Carolina peat were studied.
The pyrolytic C, H, and N data confirmed the overall high volatility, relative to coal, of these biomass fuels. Particulate emissions were correlated to vertical velocity and particle geometry, but were found to be relatively insensitive to combustion-zone oxygen, temperature, and biomass composition, NO emissions are strongly dependent on combustion-zone oxygen concentration and the nitrogen content of the biomass fuel. NO emissions increased dramatically with increasing excess air and increasing fuel nitrogen; however, these emissions were relatively insensitive to both temperature and moisture content.