Environmental Sciences, Safety, And Health Radiation, Thermal, And Other Environmental Pollutant Effects On Living Organisms And Biological Materials

Experiment investigations on the performance of a centrally fuel rich swirl coal combustion burner: Influence of primary air ratio - article no. A39

Authors: Chen, Z.C. Li, Z.Q. Jing, J.P. Wei, H.D. Chen, L.Z. Wu, S.H. Yao, Y. [Harbin Institute of Technology, Harbin (China)]
 
Abstract: A three-component particle-dynamics anemometer is used to measure, in the near-burner region, the influence of the primary air ratio on the gas/particle two phase characteristics for a centrally fuel rich swirl coal combustion burner, on a gas/particle two phase test facility. Velocities, particle volume flux profiles and particle relative number concentrations were obtained. With a low primary air ratio, the axial velocities for gas and particles on the chamber axis are always small and easily reach the negative, and the central recirculation zone is easily formed and much closer to the outlet of the burner. In each cross-section, in the radius range from R 1=23.85% is always larger than that with r 1=16.56%, which means the degree penetration with a high primary air ratio is higher than that with a low primary air ratio. The influence of gas/particle flow characteristics with a different primary air ratio on combustion has been analyzed.
Publication Date: 01 Jul 2008
Resource Type: Journal Article
Resource Relation: Journal: International Journal of Chemical Reactor Engineering; Journal Volume: 6
Country of Publication: United States
Language: English
Keywords relating to this report:
ANEMOMETERS
BENCH-SCALE EXPERIMENTS
BURNERS
COAL
COMBUSTION
FUEL-AIR RATIO
PARTICLES
PULVERIZED FUELS
TWO-PHASE FLOW
VELOCITY
VORTEX FLOW

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