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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/2664

Title: Advanced control of Ethylene to Butene-1: dimerization reactor
Authors: Ali, Emad
Al-humaizi, Khalid
Keywords: Ethylene dimerization
Temperature stabilization
Fuzzy logic control
Globally linearizing control
Model predictive control
Issue Date: 2004
Citation: Automatic Control and System Engineering 1: 34(52)
Abstract: Butene-1 is produced from ethylene by dimerization reaction in a CSTR. Due to the exothermic reaction, serious temperature runaway occurs in the reactor. Therefore, it is important to stabilize the reaction temperature in order to maintain good quality product and safe operation. Temperature stabilization is also essential for maintaining optimal operation of high ethylene conversion and desired butene-1 yield in the face of plant upsets. The objective of this paper is, thus, to study the simulated implementation of nonlinear control algorithms such as Fuzzy Logic Control (FLC), Globally Linearizing Control (GLC) and Nonlinear Model Predictive Control (NLMPC) algorithms for temperature stabilization of such a reactor to maintain favorable ethylene conversion and butene-1 yield conditions. The simulation results revealed the capability of all the proposed control algorithms to stabilize such a reactor with some differences in their performance. In addition, the performance of the nonlinear controllers outperforms that of the standard PI algorithm in terms of providing higher yield and shorter settling time during disturbances. However, careful tuning of the parameters of these controllers is necessary without which very aggressive or even unstable closed-loop performance will be obtained.
Description: Chemical Engineering Department, King Saud University P.O.Box 800, Riyadh 11421, Saudi Arabia Fax no.: ++(9661) 467-8770 Phone no.: ++(9661) 467-6871 Email address: amkamal@ksu.edu.sa
URI: http://hdl.handle.net/123456789/2664
Appears in Collections:College of Engineering

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