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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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