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Received November 1, 2006
Accepted March 30, 2007
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Repetitive control of CATOFIN process

Honeywell Co. Ltd, Seoul 140-702, Korea 1Department of Chemical and Biomolecular Engineering, Sogang University, Shinsoodong-1, Mapogu, Seoul 121-742, Korea 2Department of Chemical and Biomolecular Engineering, Samsung Engineering Co. Ltd, Seoul 135-854, Korea
kslee@sogang.ac.kr
Korean Journal of Chemical Engineering, November 2007, 24(6), 921-926(6), 10.1007/s11814-007-0098-3
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Abstract

The CATOFIN process is a propane dehydrogenation process for production of propylene. It uses multiple adiabatic fixed-bed reactors where dehydrogenation and regeneration (decoking) are performed alternatively over roughly ten minutes of period for each operation. Taking advantage of the periodic operation, the present research concerns the development of a repetitive control method to improve the operation of the CATOFIN process. The controller is designed to perform feedback action during the regeneration cycle and to perform only state estimation during the dehydrogenation cycle. To improve the performance while overcoming the nonlinearity of the process, a linearized timevarying process was derived from a first-principle model and used for the controller design.

References

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