The combustion aerodynamics of a pulverized coal low NO{sub x} swirl burner in an industrial boiler
Conference
·
OSTI ID:427835
- Pennsylvania State Univ., University Park, PA (United States). Combustion Lab.
This paper discusses the application of a Computational Fluid Dynamics (CFD) code (FLUENT) to predict temperature and velocity profiles, and particle trajectories in an industrial fired by a low NO{sub x} pulverized coal swirl burner. The predictions of the code were compared to experimental measurements of gas temperature, particle size distribution, and particle velocities. The diagnostics employed were a suction pyrometer and a Particle Counter Sizer Velocimeter Probe (PCSV-P). Good agreement was found between the temperature predictions and the measurements. In situ particle size distributions were predicted accurately using the Baum and Street model with a swelling factor of zero. The numerical modeling indicated that the Type II flow issued from the burner could be transformed into Type III flow, by eliminating swirl from the primary air stream, which provided the preferred particle trajectories and increased the combustion efficiency.
- DOE Contract Number:
- FC22-92PC92162
- OSTI ID:
- 427835
- Report Number(s):
- CONF-961006--; ISBN 0-7918-1795-4
- Country of Publication:
- United States
- Language:
- English
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