The dynamics and control of a catalytic bubbling fluidized-bed reactor were investigated. The reaction chosen was the selective oxidation of benzene to maleic anhydride. This highly exothermic reaction proceeds according to a parallel-consecutive scheme. / The study of reaction kinetics showed that the reaction rate expressions based on the oxido-reduction mechanism could be used to describe the benzene conversion and maleic anhydride yield. A fluidized bed reactor model using bubble assemblage concepts combined with the reaction rate expressions gave accurate predictions of the benzene conversion and maleic anhydride yield for a wide range of temperature, feed rate, inlet benzene concentration, and catalyst mass. / A phenomenological model of the dynamic behaviour based on the steady-state model was formulated and validated with experimental data. The model predicted accurately the responses of temperature and product concentrations. / The study of the reactor steady-state and dynamic behaviour showed that benzene conversion and maleic anhydride production rate could be used as controlled variables to optimize the yield. System identification techniques were used to obtain input-output linear models of the benzene conversion and maleic anhydride production rate as a function of feed rate and temperature set-point. The models were used to design a multivariable controller based on the internal model control approach. The performance of different controller designs was studied through simulation.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.70191 |
| Date | January 1991 |
| Creators | Perrier, Michel |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy (Department of Chemical Engineering.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001259625, proquestno: AAINN72012, Theses scanned by UMI/ProQuest. |
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