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  Effect of Delay on the Stability of a Coupled Reactor-Flash System Sustaining an Elementary Non-isothermal Reaction

Balasubramaniam, P., Pushpavanam, S., Kienle, A., & Balaraman, K. S. (2005). Effect of Delay on the Stability of a Coupled Reactor-Flash System Sustaining an Elementary Non-isothermal Reaction. Industrial and Engineering Chemistry Research, 44, 3619-3625. doi:10.1021/ie040005v.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-9C92-D Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-D1E5-9
Genre: Journal Article
Alternative Title : Ind. Eng. Chem. Res.

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Balasubramaniam, P.1, Author
Pushpavanam, S.1, Author              
Kienle, A.2, 3, Author              
Balaraman, K. S.4, Author
Affiliations:
1Dep. of Chemical Engineering, Indian Institute of Tech., Madras, Chennai, India, persistent:22              
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              
4Chennai Petroleum Corporation Limited, Manali, Chennai, India , ou_persistent22              

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 Abstract: In this work, we investigate the stability of a continuous stirred tank reactor (CSTR) coupled to an isothermal, isobaric flash. The coupling is through the recycle of the reactant-rich stream from the downstream flash unit to the upstream reactor. We consider the first-order irreversible reaction A -> B occurring non-isothermally in the CSTR. The main focus of this work is to investigate the effect of delay arising as a result of transportation lag from the reactor to the separator on the system stability. In the absence of delay, it has been clearly shown that the coupled system exhibits static and dynamic instability. The effect of delay on the stability of the coupled system is studied for the two classical control strategies: (i) The fresh feed flow rate, F₀, is flow controlled and the reactor effluent flow rate, F, is used to control the molar holdup in the reactor, M_R. (ii) The flow rate, F, is flow controlled, and F₀ is used to control M_R. It is shown that delay induces new regions of dynamic instability. The system switches from instability to stability and vice versa for these two control strategies as the delay is increased. © 2005 American Chemical Society [accessed 2014 January 9th]

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Language(s): eng - English
 Dates: 2005
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 218298
Other: 7/05
DOI: 10.1021/ie040005v
 Degree: -

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Title: Industrial and Engineering Chemistry Research
Source Genre: Journal
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Publ. Info: Washington, D.C : American Chemical Society
Pages: - Volume / Issue: 44 Sequence Number: - Start / End Page: 3619 - 3625 Identifier: ISSN: 0888-5885
CoNE: https://pure.mpg.de/cone/journals/resource/954928546246