Combustion of single char particles in a turbulent fluidized bed
作者:
P. K. Halder,
A. Datta,
R. Chattopadhyay,
期刊:
The Canadian Journal of Chemical Engineering
(WILEY Available online 1993)
卷期:
Volume 71,
issue 1
页码: 3-9
ISSN:0008-4034
年代: 1993
DOI:10.1002/cjce.5450710102
出版商: Wiley Subscription Services, Inc., A Wiley Company
关键词: combustion;turbulent fluidized bed;char combustion;mass transfer;reaction kinetics
数据来源: WILEY
摘要:
AbstractThe combustion of single bituminous char particles (4‐12 mm diameter) was studied in a turbulent fluidized bed operated at 1098 K using air as the fluidising medium. Results indicated that particles burn with constant density following a shrinking sphere model. Burning rates are much higher than those observed in a bubbling fluidized bed. The rate of transfer of oxygen to the particle surface is also higher than that observed in bubbling beds. A model is proposed to calculate the Sherwood numbers of the burning carbon particles. Experimental values of the Sherwood numbers agree well with those predicted from the mode
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