A predictive model of catalytic cracking: Feedstock-induced changes in gasoline and gas composition

One way to improve and predict unsteady processes of petroleum fuel production is to develop a mathematical model, that considers the feedstock composition. A study of various feedstock deep refining processes is particularly important. In this paper, we present the prediction of the catalytic crack...

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Bibliographic Details
Published in:Fuel processing technology 2021-06, Vol.217, p.106720, Article 106720
Main Authors: Nazarova, Galina, Ivashkina, Elena, Ivanchina, Emiliya, Oreshina, Alexandra, Vymyatnin, Eugene
Format: Article
Language:English
Subjects:
Boiling points
Catalysts
Catalytic cracking
Coke
Coke oven gas
Feedstock composition
Fuel production
Gas composition
Gas oil
Gasoline
Gasoline composition
Hydrocarbons
Mathematical analysis
Mathematical modeling
Mathematical models
Octane number
Petrolatum
Prediction models
Product distribution
Raw materials
Waxes
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Summary:One way to improve and predict unsteady processes of petroleum fuel production is to develop a mathematical model, that considers the feedstock composition. A study of various feedstock deep refining processes is particularly important. In this paper, we present the prediction of the catalytic cracking unit under feedstock base expansion by using oil fractions with a higher boiling point. The zeolite-containing catalyst with ZSM-5/Y ratio = 0.11 was used in this work. A new kinetic model involving the high molecular weight of C13–C40 hydrocarbons, gasoline groups, gas individual hydrocarbons and coke formation reactions was developed. The feed comprehensive studies, the development and application of a mathematical model allow assessing the feasibility of various feedstock types involvement. The impact of four feedstock types on the yield of catalytic cracking products, catalyst deactivation degree, gasoline and gas composition, and octane number were determined. Among the feedstocks under study are West Siberian oil vacuum gas oil, a mixture of Kazakhstan and West Siberian oil, a mixture of vacuum and atmospheric gas oil with residual feedstock (extract, slack waxes, petrolatum, deasphalting agent, raffinate), a mixture of vacuum distillate and residual feedstock (extracts, slack waxes). [Display omitted] •A new kinetic scheme of FCC oriented to gasoline and gas compositions is proposed.•Feedstock group and structural-group composition is considered.•Effect of various feedstock catalytic cracking is discovered.
ISSN:0378-3820
1873-7188
DOI:10.1016/j.fuproc.2020.106720