Mass transfer during forest biomass particles drying in a fluidised bed

被引：3

作者：

Moreno, Rogelio M. ^{[1
]}

Antolin, Gregorio ^{[2
]}

Reyes, Alejandro E. ^{[3
]}

机构：

[1] Univ Austral Chile, Inst Mat & Proc Termomecan, Casilla 567, Valdivia, Chile

[2] Univ Valladolid, Dept Ingn Quim & Tecnol Medio Ambiente, Valladolid 47011, Spain

[3] Univ Santiago Chile, Dept Ingn Quim, Casilla 10233, Santiago, Chile

来源：

BIOSYSTEMS ENGINEERING | 2020年 / 198卷

关键词：

Fluidised bed; Mass transfer; Particles drying; Forestry biomass; Gas-solid fluidised bed; Gas-solid mass transfer; HEAT-TRANSFER; COEFFICIENT; AGITATION; SAWDUST;

D O I：

10.1016/j.biosystemseng.2020.08.003

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The drying of biomass particles is an important industrial process where heat and mass transfer simultaneously occur. Following on from our previous work on convective heat transfer, here we report experimental results obtained by analysing the mass transfer between the gas and the surface of the wood particles, during drying in a mechanically stirred fluidised bed. It is assumed that, during the constant drying rate period, the moisture concentration of the gas on the surface of the particle is constant. The results have allowed us to obtain a correlation between the Sherwood number and the Reynolds number in the range of Rep between 102 and 257; the proposed correlation Shgp = Shgp (Rep) predicts the surface mass transfer coefficient with an average deviation of 30% in relation to experimental data. (c) 2020 IAgrE. Published by Elsevier Ltd. All rights reserved.

引用

页码：163 / 171

页数：9

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