Effect of the tube shape on gas and particle flow in spouted beds with a porous draft tube | Zendy

Nagashima Hiroshi | Zendy; Ishikura Toshifumi | Zendy; Ide Mitsuharu | Zendy

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Effect of the tube shape on gas and particle flow in spouted beds with a porous draft tube

Author(s) -

Nagashima Hiroshi,

Ishikura Toshifumi,

Ide Mitsuharu

Publication year - 2009

Publication title -

the canadian journal of chemical engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.404

H-Index - 67

eISSN - 1939-019X

pISSN - 0008-4034

DOI - 10.1002/cjce.20150

Subject(s) - draft tube , conical surface , tube (container) , annulus (botany) , materials science , porosity , mechanics , volumetric flow rate , particle (ecology) , flow (mathematics) , porous medium , composite material , geology , physics , oceanography

Flow characteristics of a spouted bed with a porous draft tube have been investigated experimentally. In this study, both a cylindrical tube and a conical–cylindrical tube were used as the draft tube. As a result, the efficiency of gas–solid contact and solids circulation rate in the bed were considerably improved by inserting a conical–cylindrical porous draft tube into the bed. Moreover, it was confirmed that the gas flow rate through the annulus reached nearly the level of a conventional spouted bed by using conical–cylindrical porous draft tube.

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