Modeling of a radial-flow moving-bed reactor for dehydrogenation of isobutane

Bijani, Parisa Moghimpour; Sahebdelfar, Saeed

doi:10.1134/s0023158408040228

Cited by 23 publications

(9 citation statements)

References 9 publications

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“…153,154 They concluded that the analysis of the reactor effluent composition is not sufficient to validate the considered models; thus, the data of the moving bed is also required. 153,157 Gradually, the modeling of the MBRs was developed, and more effective parameters were investigated including cocurrent/countercurrent configurations, 158 the application of nanocatalysts, 12 different types of the feed, 159 radial flow pattern, 160 the catalyst deactivation, 161 the moving bed for the grain drying process, 162 and the CVD coating of the fine particles. 163 The process modeling has been conducted by considering the mass and energy balances, 164 kinetics, 165 the equilibrium, 90 and the physical properties.…”

Section: Theoretical Studiesmentioning

confidence: 99%

Moving Bed Reactors: Challenges and Progress of Experimental and Theoretical Studies in a Century of Research

Shirzad

Karimi

Silva

et al. 2019

Ind. Eng. Chem. Res.

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Moving bed reactors (MBRs) have been proposed as a sign of significant progress in the reaction engineering area for performance improving and energy saving. Since their advent in 1890, the MBRs have attracted a wide acceptance in different industries, while they were first developed for the drying industries. The progress that this technology has made during its evolution led to the introduction of these reactors as a pioneer strategy in other industries including petroleum, petrochemical, pyrolysis, and biomass industries. In the traditional reaction systems, the process performance decreases during the operational conditions, while MBRs have obviated this drawback by having an all-around permanent acceptable efficiency. In this context, the present work provides an overview on the evolution of MBRs by investigating the main experimental and theoretical studies. In this way, the experimental studies have typically taken into account operational conditions and production rates of different products, while in the theoretical research, modeling, and simulation of conventional processes, the evaluation of novel configurations and the optimization techniques have been investigated. In the end, some suggestions are proposed to modify the traditional MBRs as helpful ideas for further studies.

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Section: Theoretical Studiesmentioning

confidence: 99%

Moving Bed Reactors: Challenges and Progress of Experimental and Theoretical Studies in a Century of Research

Shirzad

Karimi

Silva

et al. 2019

Ind. Eng. Chem. Res.

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“…In this work, the rate expressions have been selected from the literature [13,14]. The rate equations for isobutane dehydrogenation and isobutane dissociation combined with the equilibrium constant provides enough information about kinetics of isobutene synthesis.…”

Section: Kinetics Modelmentioning

confidence: 99%

Optimal operating condition of membrane reactors to enhance isobutene production, selectivity and hydrogen production

Farsi

Jahanmiri

Rahimpour

2012

Journal of Industrial and Engineering Chemistry

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“…In this work, the kinetic models and reaction rate parameters have been selected from literature. [12,13] PROCESS MODELING…”

Section: Kinetic Modelmentioning

confidence: 99%

Steady state modeling and simulation of the Oleflex process for isobutane dehydrogenation considering reaction network

Farsi

Jahanmiri

Rahimpour

2013

Asia-Pacific J Chem Eng

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In this study, the performance of moving bed radial flow reactors in Olefex technology to produce isobutene from isobutane dehydrogenation is studied at steady state condition. The dehydrogenation reactors have been modeled heterogeneously on the basis of the mass and energy governing laws considering a two-dimensional model. In this system, isobutane dehydrogenation, hydrogenolysis, propane dehydrogenation, and coke formation reactions occur on the catalyst surface. The coke deposition on the catalyst surface and the catalyst velocity along the axial direction result to an activity profile along reactors that has been calculated from proper correlation. To prove the accuracy of the considered mathematical model and assumptions, simulation results are compared with the plant data at the same process condition. The isobutane conversion and isobutene selectivity have been obtained at about 38.53% and 90.76%, respectively, which have good agreement with the plant data.

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Modeling of a radial-flow moving-bed reactor for dehydrogenation of isobutane

Cited by 23 publications

References 9 publications

Moving Bed Reactors: Challenges and Progress of Experimental and Theoretical Studies in a Century of Research

Moving Bed Reactors: Challenges and Progress of Experimental and Theoretical Studies in a Century of Research

Optimal operating condition of membrane reactors to enhance isobutene production, selectivity and hydrogen production

Steady state modeling and simulation of the Oleflex process for isobutane dehydrogenation considering reaction network

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