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Sunday, August 2, 2020 | History

1 edition of Simulation of ethylbenzene dehydrogenation in microporous catalytic membrane reactors. found in the catalog.

Simulation of ethylbenzene dehydrogenation in microporous catalytic membrane reactors.

Simulation of ethylbenzene dehydrogenation in microporous catalytic membrane reactors.

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Published by U. S. Dept. of Energy. .
Written in English


The Physical Object
Pagination29 p. $0.00 C.1.
Number of Pages29
ID Numbers
Open LibraryOL17589126M

Simulation of ethylbenzene dehydrogenation in microporous catalytic membrane reactors. Technical Report. Current state-of-the-art inorganic oxide membranes offer the potential of being modified to yield catalytic properties. The resulting modules may be configured to simultaneously induce catalytic reactions with product concentration and. A mathematical model is presented to investigate the performance of tubular catalytic membrane reactor for dehydrogenation of cyclohexane using a FAU type zeolite membrane. The empirical correlations for the permeance of cyclohexane, benzene and hydrogen through FAU type zeolite membrane as a function of temperature have been developed.

Ethylbenzene dehydrogenation into styrene: kinetic modeling and reactor simulation. Doctoral dissertation, Texas A&M University. Texas A&M University. Available electronically from http: / / / / Simulation of ethylbenzene dehydrogenation in microporous catalytic membrane reactors Technical Report Current state-of-the-art inorganic oxide membranes offer the potential of being modified to yield catalytic properties.

This Aspen Plus simulation models the production of styrene from EB by adiabatic dehydrogenation: a process using a two-stage reactor with steam reheat. It is intended to resemble the “CLASSIC” technology of Lummus Crest/Monsanto/UOP. In the EB dehydrogenation process, the important variables are the reaction. Modeling of a novel membrane reactor to integrate dehydrogenation of ethylbenzene to styrene with hydrogenation of nitrobenzene to aniline. Chemical Engineering Science, 63 (7), ). In a continuing effort to realize this potential, an optimal design is sought for a co-current coupled flow, catalytic membrane reactor configuration.


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Simulation of ethylbenzene dehydrogenation in microporous catalytic membrane reactors Download PDF EPUB FB2

In this study, the catalytic dehydrogenation of ethylbenzene (EB) to styrene production was investigated in a tubular Pd-Ag membrane reactor (MR) in presence of a. Hermann, P. Quicker, R. Dittmeyer, Mathematical simulation of catalytic dehydrogenation of ethylbenzene to styrene in a composite palladium membrane reactor, Journal of Membrane Science, /S(97), (), ().Cited by:   A novel membrane reactor containing stainless-steel-supported zeolite silicalite-1 membrane was used for the catalytic dehydrogenation of ethylbenzene to styrene packed with an iron oxide catalyst.

The zeolite silicalite-1 membrane was formed on a porous, tubular stainless-steel (PTSS) support by a two-stage varying-temperature in situ by: The results demonstrate that with the present catalyst used under typical process conditions (T, P, WHSV, S/O) removal of hydrogen through the membrane gives only a small increase of styrene yield.

However, the model predicts that by increasing the reaction pressure in the membrane reactor the kinetic limitation can be overcome and ethylbenzene Cited by: In the same line, Akpa et al. 1 developed fi rst-principles models to estimate the ethylbenzene conversion and the product's selectivity in a catalytic membrane reactor for the dehydrogenation of.

In this study the catalytic dehydrogenation of ethylbenzene to styrene was investigated in a simulated tubular sodalite membrane reactor. The high quality microporous sodalite membrane was synthesized by direct hydrothermal method and characterized by single gas permeation measurements.

The performance of the prepared membrane showed high potential for application in a dehydrogenation membrane. The catalytic dehydrogenation of ethylbenzene to styrene in a membrane reactor was studied at ° to °C.

The reactor selected in this study is a commercial alumina membrane tube with 40Å pore diameter packed with granular catalysts. One of the reaction products, hydrogen, was separated through the membrane.

Mathematical simulation of catalytic dehydrogenation of ethylbenzene to styrene in a composite palladium membrane reactor. Journal of Membrane Science(), DOI: /S(97) Babiker K. Abdalla, Said S.E.H.

Elnashaie. Fluidized bed reactors without and with selective membranes for the catalytic. Hermann C., Quicker P., Dittmeyer R. Mathematical simulation of catalytic dehydrogenation of ethylbenzene to styrene in a composite palladium membrane reactor.

Journal of Membrane Science. ; ()– doi: /S(97) E. Drioli, A. Criscuoli, Microporous inorganic and polymeric membranes as catalytic reactors and membrane contactors, Recent Advances in Gas Separation by Microporous Ceramic Membranes, /S(00), (), ().

Styrene is an important monomer in the manufacture of thermoplastic. Most of it is produced by the catalytic dehydrogenation of ethylbenzene. In this process that depends on reversible reactions, the yield is usually limited by the establishment of thermodynamic equilibrium in the reactor.

The styrene yield can be increased by using a hybrid process, with reaction and separation simultaneously. A set of intrinsic rate equations based on the Hougen—Watson formalism was derived for the dehydrogenation of ethylbenzene into styrene on a commercial potassium-promoted iron catalyst.

The model discrimination and parameter estimation was based on an extensive set of experiments that were conducted in a tubular reactor. Experimental data were obtained for a range of temperatures, space.

The catalytic membrane reactor used to couple the dehydrogenation of ethylbenzene with the hydrogenat ion of nitrobenzene to aniline is shown schematically in F ig.

Fig. 1: Scheme of the integrated catalytic membrane re actor. The reactor is composed of two compartments, i.e. s hell and tube, each packed completely with catalyst particle s. [6] Won Jaelee, "Ethylbenzene Dehydrogenation into Styrene, Kinetic Modeling and Reactor Simulation", Department of Chemical Engineering, Texas A&M University, December [7] Kevin J.

Schwint, Richard J. Wilcox, " Process for the production of styrene monomer by improving energy efficiency and injecting a recycle. Abstract This short review compares different technologies for the synthesis of styrene which are currently studied as alternatives to the industrial dehydrogenation of ethylbenzene: dehydrogenation of ethyl-benzene followed by oxidation of hydrogen, catalytic and stoichiometric oxidative dehydrogenation of ethylbenzene, and dehydrogenation in membrane reactors.

[7] Abashar MEE, Coupling of ethylbenzene dehydrogenation and benzene hydrogenation reactions in fixed bed catalytic reactors, Chemical Engineering and Processing, ; 43, – [8] Abdalla BK, Elnashaie SSEH, A membrane reactor for the production of styrene from ethylbenzene, Journal of Membrane Science, ; 85, Dehydrogenation of ethylbenzene and hydrogenation of nitrobenzene form an interesting pair of reactions to be coupled in a catalytic membrane reactor.

The former is reversible and thermodynamically limited, supplying hydrogen with a net endothermality, while the latter is irreversible and exothermic, consuming hydrogen to produce aniline. In this work, coupling of these two reactions. Ethylbenzene Dehydrogenation into Styrene: Kinetic Modeling and Reactor Simulation.

(December ) Won Jae Lee, B.S., SungKyunKwan University; M.S., Pohang University of Science and Technology Co-Chairs of Advisory Committee: Dr. Rayford G. Anthony Dr. Gilbert F. Froment A fundamental kinetic model based upon the Hougen-Watson formalism was.

The modeling of ethylbenzene dehydrogenation in a catalytic membrane reactor has been carried out for porous membrane by means of two-dimensional, non-isothermal stationary mathematical model. A mathematical model of the catalytic membrane reactor was applied, in order to study the effects of transport properties of the porous membrane on.

Oxidative dehydrogenation of ethylbenzene under industrially relevant conditions: on the role of catalyst structure and texture on selectivity and stability. PhD Thesis, University of Groningen, Netherland.

Lee, W.J. Ethylbenzene Dehydrogenation into Styrene: Kinetic Modeling and Reactor Simulation. PhD Thesis, Texas A&M. Dehydrogenation of Ethylbenzene on Well‐Defined Iron Oxide Model Catalysts; Deactivation of K Fe Catalysts; Promoters of K Fe Catalysts; Kinetics; Application of Membrane Reactors; Dehydrogenation of Ethylbenzene‐Related Hydrocarbons; Alternative Routes for the Production of Styrene; Industrial Processes and Commercial Catalysts.Nakhostin Panahi P, Mousavi S M, Niaei A, Farzi A, Salari D.” Simulation of methanol synthesis from synthesis gas in fixed bed catalytic reactor using mathematical modeling and neural networks” International Journal of Scientific & Engineering Research,Vol.

3, Issue 2, [21] S.Simulation of the Styrene Production Process Via Catalytic Dehydrogenation Of Ethylbenzene Using CHEMCAD® Process Simulator Pérez, A., Pérez, e.y SegurA, r. Tecnura • p-ISSN: X • e-ISSN: • Vol. 21No. 53 • Julio - Septiembre de • pp.

[ 17 ] mathematical models for the construction of an ac .