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INTERNATIONAL JOURNAL OF SCIENTIFIC DEVELOPMENT AND RESEARCH
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ISSN Approved Journal No: 2455-2631 | Impact factor: 8.15 | ESTD Year: 2016
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Paper Title: Control-Relevant Dynamic Model Development and Validation for an Industrial Fluid Catalytic Cracking Unit
Authors Name: Princewill Nemibo Josiah , Ipeghan Jonathan OTARAKU , Benson Osa EVBUOMWAN
Unique Id: IJSDR2305181
Published In: Volume 8 Issue 5, May-2023
Abstract: In this paper an industrial Fluid catalytic Cracking unit was discretized into four sub-systems (vapourizer, riser, separator catalyst regenerator) to adequately capture its control-relevant features with model representations. While the vapourizer was modelled as a steady state heat exchanger, the regenerator as a continuously stirred tank reactor, the riser was modelled as a tubular reactor with plug flow in space and time, yielding a set of partial differentials, differential-algebraic equations. The riser partial differential equations were then reduced by order one, using the method of lines with eighteen internal nodes and two boundary nodes. The equations, along with constitutive relations that were developed based on hydrodynamics and catalyst activity decline considerations were solved following a sequential-modular approach with codes that were developed in this study and implemented in MatLab. Model predictions in comparison with plant data: gasoline yield (47.74%/45.90%): Light gases yield (25.65%/26.60%): Coke yield (5.38%,5.1%): Unconverted gasoil (21.56%/22.40%); riser exit temperature(527oC/524oC); regenerator temperature (774oC/743oC);coke on regenerated catalyst ,mole(0.046%/0.05%),oxygen in regenerator flue gas ,mole(2.84%,3.0%) show reasonable agreement and suggest the suitability of the model for simulation and control evaluation of the FCC unit. The novel nodal discretization of the riser partial equations and at each node allows for the calculation of catalyst activity decline as a function of space, time and temperature. compensates for the over-simplifications in the lumped parameter kinetics, thereby approximating the single event kinetics. More so, the sequential-modular solver that was developed for the solution of the large set of differential algebraic equations is in-house, home-grown and novel.
Keywords: : Process Model, Lumping, Voidage, Hydrodynamics, Catalytic Cracking
Cite Article: "Control-Relevant Dynamic Model Development and Validation for an Industrial Fluid Catalytic Cracking Unit", International Journal of Science & Engineering Development Research (www.ijsdr.org), ISSN:2455-2631, Vol.8, Issue 5, page no.1140 - 1150, May-2023, Available :http://www.ijsdr.org/papers/IJSDR2305181.pdf
Downloads: 000336256
Publication Details: Published Paper ID: IJSDR2305181
Registration ID:203767
Published In: Volume 8 Issue 5, May-2023
DOI (Digital Object Identifier):
Page No: 1140 - 1150
Publisher: IJSDR | www.ijsdr.org
ISSN Number: 2455-2631

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