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Bubbling to turbulent regime transition in a 2D catalytic fluidized bed reactor
Dissertation (MEng)--University of Pretoria, 2009.
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| Format: | Thesis |
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University of Pretoria
2013
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| _version_ | 1867613447240286208 |
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| access_status_str | Open Access |
| author2 | Nicol, Willie |
| author_browse | Nicol, Willie |
| author_facet | Nicol, Willie |
| collection | Thesis |
| dc_rights_str_mv | © 2009, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MEng)--University of Pretoria, 2009. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/27533 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:36:17.608Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/27533 Bubbling to turbulent regime transition in a 2D catalytic fluidized bed reactor Nicol, Willie jsaayman@tuks.co.za Saayman, Jean Reactor models Two-dimensional fluidized beds Ozone decomposition reaction. Bubbling-turbulent UCTD Dissertation (MEng)--University of Pretoria, 2009. The ozone decomposition reaction was performed in a 2.5cmx40cmx450cm two dimensional (2D) catalytic fluidized bed reactor. Commercial FCC catalyst impregnated with Fe2O3 was used at superficial gas velocities ranging between 0.006 m/s and 0.55 m/s. The onset velocity of the turbulent regime (uc) was determined as 0.4 m/s. The catalyst activity was optimized so that the effect of inter-phase mass transfer could be accentuated in the conversion reading. It was found that the general bubbling-turbulent model of Thompson et. al. (1999) combined with the mass transfer correlations of Kunii and Levenspiel (1991), Foka et. al. (1996) and Miyauchi et. al. (1980)gave reasonable predictions of the experimental data. The gradual improvement of reactor performance with an increase in superficial velocity (as predicted by the Thompson et. al. model) was not observed; instead a discontinuity of the reactor performance was noted in the vicinity of uc. More experimental work is required to substantiate this observation. Copyright Chemical Engineering unrestricted 2013-09-07T11:44:26Z 2010-08-25 2013-09-07T11:44:26Z 2010-04-23 2009 2010-08-25 Dissertation Saayman, J 2009, Bubbling to turbulent regime transition in a 2D catalytic fluidized bed reactor, MEng dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/27533 > E10/462/gm http://hdl.handle.net/2263/27533 http://upetd.up.ac.za/thesis/available/etd-08252010-112157/ © 2009, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | Reactor models Two-dimensional fluidized beds Ozone decomposition reaction. Bubbling-turbulent UCTD Bubbling to turbulent regime transition in a 2D catalytic fluidized bed reactor |
| title | Bubbling to turbulent regime transition in a 2D catalytic fluidized bed reactor |
| title_full | Bubbling to turbulent regime transition in a 2D catalytic fluidized bed reactor |
| title_fullStr | Bubbling to turbulent regime transition in a 2D catalytic fluidized bed reactor |
| title_full_unstemmed | Bubbling to turbulent regime transition in a 2D catalytic fluidized bed reactor |
| title_short | Bubbling to turbulent regime transition in a 2D catalytic fluidized bed reactor |
| title_sort | bubbling to turbulent regime transition in a 2d catalytic fluidized bed reactor |
| topic | Reactor models Two-dimensional fluidized beds Ozone decomposition reaction. Bubbling-turbulent UCTD |
| url | http://hdl.handle.net/2263/27533 http://upetd.up.ac.za/thesis/available/etd-08252010-112157/ |