Dynamic modelling of an industrial R2R FCC unit

Fernandes, Jean Lucas Macedo; Verstraete, J.; Pinheiro, Carla I.C.; Oliveira, Nuno M.C.; Ribeiro, F. Ramôa

doi:10.1016/j.ces.2006.11.003

Cited by 44 publications

(76 citation statements)

References 39 publications

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“…The regeneration system of an UOP FCC unit with high-efficiency regenerator is, however, different from the regeneration system of an R2R FCC unit, which is the one presented in Fernandes et al (2007). Therefore, a new model for a high-efficiency regenerator will be presented in this paper.…”

Section: High-efficiency Regenerator Modelmentioning

confidence: 89%

“…The description of the other components of the FCC reactor-regenerator system is given in detail in Fernandes et al (2007). Finally, with the FCC simulator described in Fernandes et al (2007), incorporating now the high-efficiency regenerator described in this paper, an analysis of steady state multiplicity in an UOP FCC unit with high-efficiency regenerator will be presented.…”

Section: Previous Studies Of Steady State Multiplicities In Fcc Unitsmentioning

confidence: 99%

“…The FCC model used in this study is presented in detail in Fernandes et al (2007) in what refers to the riser, cracking kinetics, stripper, and standpipes models. The regeneration system of an UOP FCC unit with high-efficiency regenerator is, however, different from the regeneration system of an R2R FCC unit, which is the one presented in Fernandes et al (2007).…”

Section: High-efficiency Regenerator Modelmentioning

confidence: 99%

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Steady state multiplicity in an UOP FCC unit with high-efficiency regenerator

Fernandes

Pinheiro

Oliveira

et al. 2007

Chemical Engineering Science

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Section: High-efficiency Regenerator Modelmentioning

confidence: 89%

Section: Previous Studies Of Steady State Multiplicities In Fcc Unitsmentioning

confidence: 99%

Section: High-efficiency Regenerator Modelmentioning

confidence: 99%

See 1 more Smart Citation

Steady state multiplicity in an UOP FCC unit with high-efficiency regenerator

Fernandes

Pinheiro

Oliveira

et al. 2007

Chemical Engineering Science

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“…The number of lumps involved in the models of the literature varies a lot and some models, especially those with a large number of lumps, do not provide the heats of reaction which are necessary for describing the energy balance in the riser. Among these cracking models, can be mentioned three lumps [33], four lumps [34,35], five lumps [36], six lumps [37], seven lumps [38], eight lumps [39,40], nine lumps [41], ten lumps [42], fourteen lumps [13,43]. For control purposes, a large number of lumps is not necessary but the energy balance is of prime importance.…”

Section: Introductionmentioning

confidence: 99%

Comparison of model predictive control strategies for a fluidized catalytic cracker

Boum

Corriou

Latifi

2017

IJET

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A FCC model is used to compare five different Model Predictive Control (MPC) strategies. The FCC process is a complex petrochemical unit with catalyst recycling that makes its behaviour highly nonlinear. The FCC comprises a riser, a separator and a regenerator with important heat coupling due to the endothermic cracking reactions of gas oil in the riser and the exothermic combustion reactions in the regenerator. The riser and the regenerator exhibit fast and slow dynamics respectively. The temperatures at riser top and in the regenerator should be controlled by manipulation of catalyst and air flow rates. All these nonlinear and coupled characteristics render the multivariable control problem difficult and thus the FCC process constitutes a valuable benchmark for comparing control strategies. Here, the performances of Dynamic Matrix Control, Quadratic Dynamic Matrix Control, MPC control with penalty on the outputs, NonLinear MPC control, Observer Based MPC control are compared.

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“…Reaction system components are aggregated according to their belonging to the specific hydrocarbon series [3,4] and the least probable reaction is excluded from the list in order to simplify schemes. This approach is characterized by the reaction mechanism with the average reactivity of hydrocarbon groups.…”

Section: Introductionmentioning

confidence: 99%

Formalization of hydrocarbon conversion scheme of catalytic cracking for mathematical model development

Nazarova

Ivashkina²,

Иванчина³

et al. 2015

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. The issue of improving the energy and resource efficiency of advanced petroleum processing can be solved by the development of adequate mathematical model based on physical and chemical regularities of process reactions with a high predictive potential in the advanced petroleum refining. In this work, the development of formalized hydrocarbon conversion scheme of catalytic cracking was performed using thermodynamic parameters of reaction defined by the Density Functional Theory. The list of reaction was compiled according to the results of feedstock structural-group composition definition, which was done by the n-d-m-method, the Hazelvuda method, qualitative composition of feedstock defined by gas chromatography-mass spectrometry and individual composition of catalytic cracking gasoline fraction. Formalized hydrocarbon conversion scheme of catalytic cracking will become the basis for the development of the catalytic cracking kinetic model. IntroductionAt the present stage of fuel chemical technology development the advanced petroleum refining processes are the most significant for refining, because the industrial sector is focused on the efficient use of natural fuel-power resources and the demand in fuel is increasing every year.Currently, the construction of modern technologies for advanced petroleum processing such as hydrocracking, catalytic cracking, hydrotreating of heavy hydrocarbon fractions, hydrodewaxing and hydroisomerization is organized at the major refinery plants. Modernization of the refinery industry is principally connected with the aim to create a competitive refining and petrochemical sector, corresponding the high level of modern foreign refineries (oil refining depth -85-95%).Advanced petroleum processing is aimed to the production of light hydrocarbon fractions (mainly gasoline and diesel fractions) from the heavy fraction of petroleum feedstock.Exploitation of advanced petroleum processing units in the energy and resource-efficient modes should be carried out with the application of the mathematical models which are based on the hydrocarbon conversion mechanism reflecting the physical and chemical essence of process [1,2].It is important to take into account factors that influence the quality and quantity of production (multi-component of feedstock, catalyst types, process conditions, associativity of flowsheet devices and others.) during the development of mathematical model of the reactor. In addition, in petroleum fractions with boiling point above 200 °C the cyclic hydrocarbons are of mixed (hybrid) nature. Usually cyclic hydrocarbons contain the side paraffinic chains and, simultaneously, a part of naphthenic and aromatic rings.

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Dynamic modelling of an industrial R2R FCC unit

Cited by 44 publications

References 39 publications

Steady state multiplicity in an UOP FCC unit with high-efficiency regenerator

Steady state multiplicity in an UOP FCC unit with high-efficiency regenerator

Comparison of model predictive control strategies for a fluidized catalytic cracker

Formalization of hydrocarbon conversion scheme of catalytic cracking for mathematical model development

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