The Second China Energy Scientist Forum (CESF 2010 E-BOOK)

Xuzhou,China,10.18-10.19,2010

ISBN: 978-1-935068-37-2 Scientific Research Publishing, USA

E-Book 2244pp Pub. Date: October 2010

Category: Medicine & Healthcare

Price: $360

Title: Studies on Drying Kinetics of Lignite
Source: The Second China Energy Scientist Forum (CESF 2010 E-BOOK) (pp 1762-1765)
Author(s): Zhenxin Zhao, Department of Chemistry and Chemical Engineering, Henan University of Urban Construction, Pingdingshan, Henan, China
Buwei Ma, School of Chemistry & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing, China
Yinfeng Lin, Department of Chemistry and Chemical Engineering, Henan University of Urban Construction, Pingdingshan, Henan, China
Shuquan Zhu, School of Chemistry & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing, China
Abstract: This study takes lignite in Inner Mongolia as its object, takes 10.5% oxygen gas as the drying medium to conduct experiments of fluid bed drying. The essay shows that the lignite fluidized bed drying process composes of constant rate drying stage and falling rate drying period. The turning point of coal moisture content is 5% on drying basis. Drying velocity is controlled by the rate of moisture moving from the grains to the surface in the deceleration phase of the drying. The drying efficiency of coal is related to the moisture of lignite. To reduce the feed water, can effectively reduce the drying time and improve drying efficiency. Coal samples before and after dehydration only in the absorption peak intensity of some absorbing great changes have taken place, the main structure of the coal sample did not change.
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