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  Modeling and analysis of a plant for the production of low density polyethylene

Häfele, M., Kienle, A., Boll, M., & Schmidt, C.-U. (2006). Modeling and analysis of a plant for the production of low density polyethylene. Computers and Chemical Engineering, 31, 51-65. doi:10.1016/j.compchemeng.2006.05.001.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-9A86-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-D115-C
Genre: Journal Article
Alternative Title : Comp. Chem. Engng.

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 Creators:
Häfele, M.1, Author              
Kienle, A.1, 2, Author              
Boll, M.3, 4, Author
Schmidt, C.-U.3, 4, Author
Affiliations:
1Process Synthesis and Process Dynamics, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society, ou_1738153              
2Otto-von-Guericke-Universität Magdeburg, External Organizations, ou_1738156              
3BASF Aktiengesellschaft, Ludwigshafen, Germany, ou_persistent22              
4Basell Polyolefine GmbH, Wesseling, Germany, ou_persistent22              

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 Abstract: In this paper a detailed dynamic mathematical model of a plant for the production of low density polyethylene (LDPE) is derived. Besides the main part, a tubular reactor, the plant comprises compressors, heat exchangers and material recycles. The dynamic model for the overall system consists of differential, partial differential and algebraic equations. For the numerical solution with the simulator DIVA, this system is transformed into a system of differential and algebraic equations. For the transformation an adaptive finite difference scheme is used. With this mathematical model, the influence of the reactor wall and the influence of the material recycles on the plant dynamics is studied. In particular, it is shown that the reactor wall due to its high thermal capacity dominates the time constant of the stand alone reactor. By closing the material recycles the time constant is significantly increased. In addition, the recycles give rise to intricate nonlinear behavior. © 2006 Elsevier Ltd. All rights reserved [accessed 2014 January 8th]

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Language(s): eng - English
 Dates: 2006
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 238089
Other: 20/06
DOI: 10.1016/j.compchemeng.2006.05.001
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Title: Computers and Chemical Engineering
  Other : Comp. Chem. Engng.
Source Genre: Journal
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Publ. Info: Oxford : Pergamon
Pages: - Volume / Issue: 31 Sequence Number: - Start / End Page: 51 - 65 Identifier: ISSN: 0098-1354
CoNE: https://pure.mpg.de/cone/journals/resource/954925466259