Simulation and Optimization of Industrial FCC Units Using a 4-Lump Kinetic Model

Most of the previous work on the simulation and the bifurcation behavior of industrial FCC units involved a 3-lump kinetic model with coke and light hydrocarbon gases contributing one of the lumps with the ratio between them computed empirically from industrial data. In this study a 4-lump kinetic m...

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Main Authors: A.E. Abasaeed, S.S.E.H. Elnashaie, S.S. Elshishini
Format: Article
Language:English
Published: Elsevier 1999-01-01
Series:Journal of King Saud University: Engineering Sciences
Online Access:http://www.sciencedirect.com/science/article/pii/S1018363918310031
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author A.E. Abasaeed
S.S.E.H. Elnashaie
S.S. Elshishini
author_facet A.E. Abasaeed
S.S.E.H. Elnashaie
S.S. Elshishini
author_sort A.E. Abasaeed
collection DOAJ
description Most of the previous work on the simulation and the bifurcation behavior of industrial FCC units involved a 3-lump kinetic model with coke and light hydrocarbon gases contributing one of the lumps with the ratio between them computed empirically from industrial data. In this study a 4-lump kinetic model is incorporated. This permits the calculation of the rate of coke formation thus decreasing the degree of empiricism in the model. The data from six different industrial units is used in the simulation. It was found that the model results are in good agreement with the corresponding plant data. The model predicts that the units are operated at the statically stable high temperature steady state whereas the use of the 3-lump kinetic model in previous work predicted that the units operate at the middle unstable steady state. This shows the importance of the structure of the kinetic model used for the determination of the stability characteristics of these important industrial units. The model is used to find the optimum operating conditions and the optimum performance is compared with the industrial performance.
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spelling doaj.art-ba589d18c5584829b7aba71cc643f9cd2022-12-21T20:31:07ZengElsevierJournal of King Saud University: Engineering Sciences1018-36391999-01-01112279297Simulation and Optimization of Industrial FCC Units Using a 4-Lump Kinetic ModelA.E. Abasaeed0S.S.E.H. Elnashaie1S.S. Elshishini2Chemical Engineering Department, King Saud Univiersity, PO Box 800, Riyadh 11421, Saudi ArabiaChemical Engineering Department, Cairo University, Egypt.Chemical Engineering Department, Cairo University, Egypt.Most of the previous work on the simulation and the bifurcation behavior of industrial FCC units involved a 3-lump kinetic model with coke and light hydrocarbon gases contributing one of the lumps with the ratio between them computed empirically from industrial data. In this study a 4-lump kinetic model is incorporated. This permits the calculation of the rate of coke formation thus decreasing the degree of empiricism in the model. The data from six different industrial units is used in the simulation. It was found that the model results are in good agreement with the corresponding plant data. The model predicts that the units are operated at the statically stable high temperature steady state whereas the use of the 3-lump kinetic model in previous work predicted that the units operate at the middle unstable steady state. This shows the importance of the structure of the kinetic model used for the determination of the stability characteristics of these important industrial units. The model is used to find the optimum operating conditions and the optimum performance is compared with the industrial performance.http://www.sciencedirect.com/science/article/pii/S1018363918310031
spellingShingle A.E. Abasaeed
S.S.E.H. Elnashaie
S.S. Elshishini
Simulation and Optimization of Industrial FCC Units Using a 4-Lump Kinetic Model
Journal of King Saud University: Engineering Sciences
title Simulation and Optimization of Industrial FCC Units Using a 4-Lump Kinetic Model
title_full Simulation and Optimization of Industrial FCC Units Using a 4-Lump Kinetic Model
title_fullStr Simulation and Optimization of Industrial FCC Units Using a 4-Lump Kinetic Model
title_full_unstemmed Simulation and Optimization of Industrial FCC Units Using a 4-Lump Kinetic Model
title_short Simulation and Optimization of Industrial FCC Units Using a 4-Lump Kinetic Model
title_sort simulation and optimization of industrial fcc units using a 4 lump kinetic model
url http://www.sciencedirect.com/science/article/pii/S1018363918310031
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