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Numerical computation of a circulating fluidized bed combustor

✍ Scribed by Lu Huilin; Bie Rushan; Yang Lidan; Zhao Guangbo; Tan Xiu

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
148 KB
Volume
22
Category
Article
ISSN
0363-907X

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✦ Synopsis

A mathematical model to describe a circulating fluidized-bed combustor is presented. A modified two-phase model which was used in the bubbling fluidized-bed combustor is considered to simulate the dense zone of the bottom section. For the upper section of the bed the momentum and energy-balance equation are used to predict the temperature and velocity profiles for the gas and the particles. The model performs mass balances for the chemical gas species (O , H O, CO, CO and SO

) with consideration being given to the last for retention by limestone particles. The model is applied to typical conditions of a circulating atmospheric fluidized-bed boiler and the simulation results show the expected trends.

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