Dynamics of a Packed Bed Reactor With Reactant Recycle

Brabrand, H.; Jørgensen, Sten Bay

doi:10.1016/b978-0-08-041711-0.50017-9

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1997

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“…This is accomplished by recycling unconverted reactant or a fraction of the outlet stream. Multiple periodic solutions have been reported in [3] and [lo]. The periodic solutions are initiated by Hopf bifurcations, and it turns out that the periods in all cases are simple fractions of the thermal residence time.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear dynamics and control of a recycle fixed bed reactor

Recke

Jørgensen

1997

Proceedings of the 1997 American Control Conference (Cat. No.97CH36041)

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The purpose of this paper is twofold. Primarily to describe the dynamic behaviour that can be observed in a fixed bed reactor with recycle of unconverted reactant. Secondly to describe the possibilities of model reduction in order to facilitate control design. Reactant recycle has been shown to introduce periodic solution to the fixed bed reactor, a phenomenon which is not seen for the system without the recycle, at least not within the Peclet number range investigated in the present work. The possibility of model reduction by the methods of modal decomposition, and by characteristics are investigated in the paper for the present case. Finally a criterion for actuator selection is formulated, and a simulated control example is given.

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Section: Introductionmentioning

confidence: 99%