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Computational Investigation and Optimization of Flow Field in Sprayed Calciners

LI Xiang-guo MA Bao-guo WANG Xin-gang JIAN Shou-weiKey Laboratory for Silicate Material and Engineering Ministry of Education, Wuhan University of Technology, 430070  
The flow field in the sprayed calciner was investigated using standard k-ε Model and SIMPLE method, flow field in the calciner can be attained by changing the middle-necking, the construction parameter of cylinder, the flow velocity of the bottom inlet and the velocity of swirl flow. The compared and analyzed results can supply references and information for optimization of flow-fields and construction design of the calciner. The simulation results demonstrate that the sprayed flow was mostly formed due to the sprayed effect; moreover, the transverse and converse mix of coal and raw materials was insufficient in the calciner. The delay of path line of flow and increase of transverse mix by changing the construction parameters and the operation conditions will be propitious to the delay of stop time of materials, coal combustion and the decomposition of CaCO3. Moreover, the simulation results can give the basis for optimizing the geometrical design and flow parameters.
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