Combustion and co-combustion of auto fluff

Fluidization experiments at ambient conditions and combustion experiments with auto fluff have been conducted as a preamble to development of a two-stage combustion process by IGT. Fluidized-bed combustion has revealed unique properties of auto fluff. The CO concentration in the flue gas fluctuates widely with non-steady feeding of fluff. The effects of fractional excess air, fluidizing air velocity, bed temperature, and auto-fluff feed rate have been examined to establish optimum combustion conditions. Carbon analyses in the different streams and an overall carbon balance suggest that use of a second-stage cyclonic combustor is advisable both for energy recovery and compliance with EPA emission requirements.