Novel fluidized bed dryer for biomass drying

Biomass drying is performed mainly in rotary dryers, which occupy a large footprint. To explore the efficient drying of biomass, a fluidized bed dryer was proposed. Good circulation of biomass particles could be established in the fluidized bed without the use of inert particle or mechanical aids. T...

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Bibliographic Details
Published inFuel processing technology Vol. 122; pp. 170 - 175
Main Authors Liu, Yuping, Peng, Jianghong, Kansha, Yasuki, Ishizuka, Masanori, Tsutsumi, Atsushi, Jia, Dening, Bi, Xiaotao T, Lim, C J, Sokhansanj, Shahab
Format Journal Article
LanguageEnglish
Published 01.06.2014
Subjects
Biomass
Driers
Drying
Fluidized beds
Fluidizing
heat transfer
Inert
Moisture content
rotary dryers
Sawdust
water content
Online AccessGet full text
ISSN0378-3820
DOI10.1016/j.fuproc.2014.01.036

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Summary:Biomass drying is performed mainly in rotary dryers, which occupy a large footprint. To explore the efficient drying of biomass, a fluidized bed dryer was proposed. Good circulation of biomass particles could be established in the fluidized bed without the use of inert particle or mechanical aids. The initial moisture content of the input sawdust affected its fluidization performance. For the drying of sawdust of high-moisture content the fluidization behavior could be divided into three stages; partial fluidization, full fluidization with increasing drying rate, and full fluidization with decreasing drying rate. A high drying rate could be achieved because of the fast mass and heat transfer rate in the fluidized bed. The fluidized bed dryer has a drying performance similar to the binary mixture fluidized bed dryer but more compact, and requires no separation of dried biomass particles from the inert bed particles.
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ISSN:0378-3820
DOI:10.1016/j.fuproc.2014.01.036