Numerical investigation on two-phase flow in rich/lean pulverized coal nozzles

The investigation of particle-laden turbulent flow in a newly developed rich/lean pulverised coal nozzle interior is presented. A stochastic particle dispersion model and a model of particle-wall collision are employed for numerical simulation. Various cases of different particle diameters, position...

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Bibliographic Details
Published in:Fuel (Guildford) 2000-11, Vol.79 (14), p.1853-1860
Main Authors: FAN, J. R, XIA, Z. H, ZHANG, X. Y, CEN, K. F
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Furnaces. Firing chambers. Burners
Solid and pulverized fuel burners and combustion chambers
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Summary:The investigation of particle-laden turbulent flow in a newly developed rich/lean pulverised coal nozzle interior is presented. A stochastic particle dispersion model and a model of particle-wall collision are employed for numerical simulation. Various cases of different particle diameters, positions of the baffle-board and the diaphragm are numerically investigated. The flow characteristics in the nozzle interior, such as flow equilibrium between the two sides of the diaphragm, particle distribution, rich/lean concentration ratio and characteristics of resistance are discussed. The paper analyses the mechanism of the separating process of pulverised coal. (Original abstract - amended)
ISSN:0016-2361
1873-7153
DOI:10.1016/S0016-2361(99)00252-5