Drying kinetics of condensation stage in super-heated steam drying

[en] In order to explore the mechanism of the drying process and to optimize the drying operation, the comparative test was conducted with hot air drying and super-heated steam drying for lignite. The results showed that the steam condensation happened obviously in the initial stage of the super-heated steam drying, which resulting the obvious different drying kinetics compared to the hot air drying. The effect of the steam condensation on the initial stage of the drying process was studied through theoretical analysis of drying kinetics of super-heated steam drying. The mathematical model of super-heated steam drying was improved by combining the steam condensation on the basis of the mathematical model of the hot air drying. The experimental results verified that the fitting precision of the improved mathematical model was well and the determination coefficient was above 0.97. The study can provide a basis for optimizing the design and operating conditions of the drying equipment.

Disciplines :

Energy

Author, co-author :

Shi, Yongchun

Li, Jie ; Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Procédés et développement durable

Li, Xuanyou

Wang, Chengyun

Zhao, Gaiju

Yin, Fengjiao

Language :

Chinese

Title :

Drying kinetics of condensation stage in super-heated steam drying

Publication date :

2012

Journal title :

Transactions of the Chinese Society of Agricultural Engineering

ISSN :

1002-6819

Publisher :

Chinese Society of Agricultural Engineering, China

Volume :

Issue :

Pages :

211-216

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 23 March 2013

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