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  Theoretical Analysis of Heat Integration in a Periodically Operated Cascade of Catalytic Fixed-Bed Reactors

Zahn, V. M., Mangold, M., Krasnyk, M., & Seidel-Morgenstern, A. (2009). Theoretical Analysis of Heat Integration in a Periodically Operated Cascade of Catalytic Fixed-Bed Reactors. Chemical Engineering and Technology, 32(9), 1326-1338. doi:10.1002/ceat.200900201.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-93A5-7 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-7F50-E
Genre: Journal Article

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 Creators:
Zahn, V. M.1, Author              
Mangold, M.2, Author              
Krasnyk, M.2, Author              
Seidel-Morgenstern, A.1, 3, Author              
Affiliations:
1Physical and Chemical Foundations of Process Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society, ou_1738150              
2Process Synthesis and Process Dynamics, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society, ou_1738153              
3Otto-von-Guericke-Universität Magdeburg, External Organizations, ou_1738156              

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Free keywords: Catalytic oxidation • Multiple steady-states • Periodic flow reversal • Reactors - Fixed bed • Simulated moving bed
 Abstract: Forced periodic operation can lead to improved reaction processes. Such operation is studied for the example of the application of a cascade of connected adiabatic fixed-bed reactors to perform catalytic total oxidation. It is shown that the periodic operation of the configuration considered allows an autothermal operation. The concept can outperform classical reverse-flow operation concerning the reduction of slips of unconverted feed. A simple model based on the assumption of a hypothetical countercurrent of the solid phase is derived and compared with a standard dynamical model of the reactor cascade. By evaluation of steady state profiles and application of bifurcation theory, it is demonstrated that the reduced model describes the limiting case for an infinitely segmented cascade and allows assessment of important properties of the periodic process. It permits a fast and detailed analysis of limit point bifurcations, which result in curves enclosing the region of desired ignited states of the reactor. Using singularity analysis further helps to understand the influence of secondary parameters and to identify operational limits. Copyright © 2009 John Wiley & Sons, Inc. All Rights Reserved. [accessed November 25, 2009]

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Language(s): eng - English
 Dates: 2009
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 437517
Other: 40/09
DOI: 10.1002/ceat.200900201
 Degree: -

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Title: Chemical Engineering and Technology
Source Genre: Journal
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Publ. Info: New York : J. Wiley
Pages: - Volume / Issue: 32 (9) Sequence Number: - Start / End Page: 1326 - 1338 Identifier: ISSN: 0930-7516
CoNE: https://pure.mpg.de/cone/journals/resource/991042744467904