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  Analysis and Demonstration of a Control Concept for a Heat Integrated Simulated Moving Bed Reactor

Zahn, V. M., Yi, C.-U., & Seidel-Morgenstern, A. (2011). Analysis and Demonstration of a Control Concept for a Heat Integrated Simulated Moving Bed Reactor. Chemical Engineering Science, 66(20), 4901-4912. doi:10.1016/j.ces.2011.06.055.

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 Creators:
Zahn, V. M.1, Author           
Yi, C.-U.2, Author
Seidel-Morgenstern, A.1, 2, Author           
Affiliations:
1Physical and Chemical Foundations of Process Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society, ou_1738150              
2Otto-von-Guericke-Universität Magdeburg, External Organizations, ou_1738156              

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Free keywords: Keywords: Adiabatic fixed-bed reactor; Simulated moving bed; Ignition temperature; Nonlinear dynamics; Multiplicities; Dynamic simulation; Petri nets
 Abstract: Successful operation of a simulated moving bed reactor requires a strategy to control switching of the inlet and outlet positions between different fixed-bed segments. This is due to the narrow operation window in which an ignited state can be maintained and complete conversion is assured in exothermal irreversible reactions. This work compares three control concepts which are either based on monitoring the reaction front or the leading thermal front. Another feature investigated is the length of the observation time considering a single switching period and a complete cycle. For the concept favored some efforts regarding parameterization are made. The wider range of temperature set-points applicable can be related to stability limits of an associated hypothetical true moving bed reactor. Responses to step inputs in feed concentration and total flow rate are investigated experimentally in order to evaluate the performance of the controller suggested. An ignited state of the reactor could be maintained successfully for 3.5 days. Copyright © 2011 Elsevier Ltd All rights reserved. [accessed July 27th 2011]

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Language(s): eng - English
 Dates: 2011
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 570421
Other: 19/11
Other: 20/11
DOI: 10.1016/j.ces.2011.06.055
 Degree: -

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Title: Chemical Engineering Science
  Other : Chem. Eng. Sci.
Source Genre: Journal
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Publ. Info: Amsterdam : Pergamon
Pages: - Volume / Issue: 66 (20) Sequence Number: - Start / End Page: 4901 - 4912 Identifier: ISSN: 0009-2509
CoNE: https://pure.mpg.de/cone/journals/resource/954925389239