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RESIDENCE TIME DISTRIBUTION AND DRYING CHARACTERISTICS OF A CONTINOUS VIBRO-FLUIDIZED BED

 

作者: Wei Han,   Benxi Mai,   Tingan Gu,  

 

期刊: Drying Technology  (Taylor Available online 1991)
卷期: Volume 9, issue 1  

页码: 159-181

 

ISSN:0737-3937

 

年代: 1991

 

DOI:10.1080/07373939108916645

 

出版商: Taylor & Francis Group

 

关键词: continous;dispersion number;diffusion;drying rate;granular particles;vibrated fluidized bed

 

数据来源: Taylor

 

摘要:

An experimental study of the residence tine distribution and drying characteristics of a continous pilot-plant vibrated fluidized bed dryer(the air distributor plate is 1.50 m in length and 0.24 m in width) is presented and discussed. Operating variables in the study included: vibration intensity, mass flow rate of air, granules feed rate, inlet air temperature and particle size. It was inferred from the experimental results that the flow of particles in the continous VFB could be considered as plug flow. Among the variables considered, vibration intensity was identified as the most significant factor to affect particle mean residence time, particle diffusivity and constant drying rate for the bed of wheat particulates and instant pharmaceutical BYN granules.

 

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