Modeling the H2SO4-catalyzed isobutane alkylation with alkenes considering the process unsteadiness

Elena Ivashkina, Irena Dolganova, Igor Dolganov, Emiliya Ivanchina, Asem Nurmakanova, Alexander Bekker

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The aim of this work is to increase the yield of isoalkanes and improve the quality of the alkylate produced by optimizing the operating conditions of the reactor using the unsteady mathematical model. The theoretical significance of this work consists in obtaining new data on thermodynamic and kinetic regularities of the process of H2SO4-catalyzed isobutane alkylation with alkenes in an industrial reactor, substantiating the level of the reaction network detalization. It was also found that the alkylate yield increases by 400 tones/h with increasing the concentration of isobutane in the feedstock by1%, and the octane number of the produced alkylate increases by 0.8–1.0 ppm with increasing the concentration of isobutane in 1.3 times. It was shown that is necessary to maintain the acid at optimum level by controlling the fresh catalyst supply and withdrawing the deactivated acid, and the fresh catalyst flow rate can be calculated using the unsteady reactor model.

Original languageEnglish
JournalCatalysis Today
DOIs
Publication statusAccepted/In press - 1 Jan 2018

Fingerprint

Butanes
Alkylation
Alkenes
Olefins
Catalysts
Antiknock rating
Acids
Feedstocks
Flow rate
Thermodynamics
Mathematical models
Kinetics

Keywords

  • Catalyst deactivation
  • HSO-catalyzed alkylation
  • Mathematical model
  • Optimization
  • Simulation

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Cite this

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title = "Modeling the H2SO4-catalyzed isobutane alkylation with alkenes considering the process unsteadiness",
abstract = "The aim of this work is to increase the yield of isoalkanes and improve the quality of the alkylate produced by optimizing the operating conditions of the reactor using the unsteady mathematical model. The theoretical significance of this work consists in obtaining new data on thermodynamic and kinetic regularities of the process of H2SO4-catalyzed isobutane alkylation with alkenes in an industrial reactor, substantiating the level of the reaction network detalization. It was also found that the alkylate yield increases by 400 tones/h with increasing the concentration of isobutane in the feedstock by1{\%}, and the octane number of the produced alkylate increases by 0.8–1.0 ppm with increasing the concentration of isobutane in 1.3 times. It was shown that is necessary to maintain the acid at optimum level by controlling the fresh catalyst supply and withdrawing the deactivated acid, and the fresh catalyst flow rate can be calculated using the unsteady reactor model.",
keywords = "Catalyst deactivation, HSO-catalyzed alkylation, Mathematical model, Optimization, Simulation",
author = "Elena Ivashkina and Irena Dolganova and Igor Dolganov and Emiliya Ivanchina and Asem Nurmakanova and Alexander Bekker",
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T1 - Modeling the H2SO4-catalyzed isobutane alkylation with alkenes considering the process unsteadiness

AU - Ivashkina, Elena

AU - Dolganova, Irena

AU - Dolganov, Igor

AU - Ivanchina, Emiliya

AU - Nurmakanova, Asem

AU - Bekker, Alexander

PY - 2018/1/1

Y1 - 2018/1/1

N2 - The aim of this work is to increase the yield of isoalkanes and improve the quality of the alkylate produced by optimizing the operating conditions of the reactor using the unsteady mathematical model. The theoretical significance of this work consists in obtaining new data on thermodynamic and kinetic regularities of the process of H2SO4-catalyzed isobutane alkylation with alkenes in an industrial reactor, substantiating the level of the reaction network detalization. It was also found that the alkylate yield increases by 400 tones/h with increasing the concentration of isobutane in the feedstock by1%, and the octane number of the produced alkylate increases by 0.8–1.0 ppm with increasing the concentration of isobutane in 1.3 times. It was shown that is necessary to maintain the acid at optimum level by controlling the fresh catalyst supply and withdrawing the deactivated acid, and the fresh catalyst flow rate can be calculated using the unsteady reactor model.

AB - The aim of this work is to increase the yield of isoalkanes and improve the quality of the alkylate produced by optimizing the operating conditions of the reactor using the unsteady mathematical model. The theoretical significance of this work consists in obtaining new data on thermodynamic and kinetic regularities of the process of H2SO4-catalyzed isobutane alkylation with alkenes in an industrial reactor, substantiating the level of the reaction network detalization. It was also found that the alkylate yield increases by 400 tones/h with increasing the concentration of isobutane in the feedstock by1%, and the octane number of the produced alkylate increases by 0.8–1.0 ppm with increasing the concentration of isobutane in 1.3 times. It was shown that is necessary to maintain the acid at optimum level by controlling the fresh catalyst supply and withdrawing the deactivated acid, and the fresh catalyst flow rate can be calculated using the unsteady reactor model.

KW - Catalyst deactivation

KW - HSO-catalyzed alkylation

KW - Mathematical model

KW - Optimization

KW - Simulation

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