Transient distributions of composition and temperature in a gas-solid packed bed reactor by near-infrared tomography

tSaoir, Meabh Nic An and Abreu Fernandes, Daniel Luis and McMaster, Michael and Kitagawa, Kuniyuki and Hardacre, Christopher and Aiouache, Farid (2012) Transient distributions of composition and temperature in a gas-solid packed bed reactor by near-infrared tomography. Chemical Engineering Journal, 189-19. pp. 383-392. ISSN 1385-8947

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Abstract

Near-infrared diffuse tomography was used in order to observe dynamic behaviour of flowing gases by measuring the 3D distributions of composition and temperature in a weakly scattering packed bed reactor, subject to wall effects and non-isothermal conditions. The technique was applied to the vapour phase hydrogen isotopic exchange reaction in a hydrophobic packing of low aspect ratio made of platinum on styrene divinyl benzene sulphonate copolymer resin. The results of tomography revealed uneven temperature and composition maps of water and deuterated water vapours in the core-packed bed and in the vicinity of the wall owing to flow maldistribution. The dynamic lag between the near-wall water vapour and deuterated water vapour compositions were observed suggesting that the convective transfer which was significant near the wall at the start, owing to high porosity, was also effective at large conversions. (C) 2012 Elsevier B.V. All rights reserved.

Item Type:
Journal Article
Journal or Publication Title:
Chemical Engineering Journal
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2209
Subjects:
ID Code:
60658
Deposited By:
Deposited On:
13 Dec 2012 11:51
Refereed?:
Yes
Published?:
Published
Last Modified:
13 May 2020 02:00