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Pd-Ag Membrane Coupled to a Two-Zone Fluidized Bed Reactor .

Abstract. Several reactor configurations have been tested for catalytic propane dehydrogenation employing Pt-Sn/MgAl2O4 as a catalyst. Pd-Ag alloy membranes coupled to the multifunctional Two-Zone Fluidized Bed Reactor (TZFBR) provide an improvement in propane conversion by hydrogen removal from the reaction bed through the inorganic membrane in addition to in situ catalyst .

Pd-Ag Membrane Coupled to a Two-Zone Fluidized Bed Reactor .

Several reactor configurations have been tested for catalytic propane dehydrogenation employing Pt-Sn/MgAl 2 O 4 as a catalyst. Pd-Ag alloy membranes coupled to the multifunctional Two-Zone Fluidized Bed Reactor (TZFBR) provide an improvement in propane conversion by hydrogen removal from the reaction bed through the inorganic membrane in addition to in situ catalyst regeneration.

Oxidative dehydrogenation of ethane in a fluidized bed .

Keywords: Fluidized bed reactor; Membrane reactor; Oxidative dehydrogenation; Ethane IntroductionEthylene mostimportant rawmaterials industrialorganic chemistry. worldcapacities itsproduction 109.4million t/year (2002) widelyapplied importanttechnical processes othervaluable base chemicals, e.g. poly- ethylene copolymers,ethylene oxide .

Comparative study of propane oxidative dehydrogenation in .

To investigate performance of fluidized bed reactor in comparison to fixed bed micro-reactor, propane conversion and propylene selectivity were measured in temperatures of 480 to 550°C and GHSV of 48000, 60000, and 78000 cc/gr.hr at equimolar feed ratio of propane to oxygen.

Feasibility of Coupling Dehydrogenation of Ethylbenzene .

Elnashaie (1995), proposed a fluidized bed with and without a selective membrane for catalytic dehydrogenation of ethylbenzene to styrene. Several design and operati ng parameters like bubble diameter, steam-to-ethylbenz ene ratio, feed temperature, and number of fluidized beds .

Modeling of fluidized bed reactors with two reaction zones .

In the present work, a mathematical model is presented for simulating fluidized bed reactors with two zones. Two reactions have been chosen as being representative of the two main uses of this kind of catalytic reactors: propane dehydrogenation and n‐butane partial oxidation.

Rakib M.A. - Team Leader, Process Modeling & Simulation .

Reactor modeling activities: - Reactor modeling for various configurations depending on processes: e.g. fluidized beds, fixed beds, moving beds etc. - Model coding on an Aspen Custom Modeler (ACM .

CiteSeerX — Pd-Ag Membrane Coupled to a Two-Zone Fluidized .

BibTeX @MISC{Medrano13pd-agmembrane, author = {José-antonio Medrano and Ignacio Julián and Javier Herguido and Miguel Menéndez}, title = {Pd-Ag Membrane Coupled to a Two-Zone Fluidized Bed Reactor (TZFBR) for Propane Dehydrogenation on a Pt-Sn/MgAl2O4 Catalyst}, year = {2013}}

"Oxidative Dehydrogenation of Propane to Propene. 2 .

Request PDF | "Oxidative Dehydrogenation of Propane to Propene. 2. Simulation of a Commercial Inert Membrane Reactor Immersed in a Fluidized Bed" | A novel reactor concept is proposed for .

Study of Propane Dehydrogenation to Propylene in an .

May 19, 2010 · The state of the art idea of bimodal particle (gas−solid−solid) fluidization was applied, in order to overcome alkane dehydrogenation reaction barriers in a fluidized bed technology. In this study, the propane dehydrogenation reaction was studied in an integrated fluidized bed reactor, using Pt-Sn/Al-SAPO-34 novel catalyst at 590 °C.

By Dehydrogenation Patents and Patent Applications (Class .

Sep 15, 2017 · Abstract: An endothermic catalytic dehydrogenation process conducted in gas phase in system including a reactor with a catalyst bed including an inorganic catalytic material and a first inert material including the steps of: feeding a first stream having an alkane of the formulae I CnH2n+1R1 with n?3 and R1?H or aryl to be dehydrogenated into the reactor, and simultaneously or subsequently .

Two-Zone Fluidized Bed Reactor (TZFBR) as a Potential Tool .

the last two decades the so called 'Two-Zone Fluidized Bed Reactor' (Figure 1.a). This reactor consists of a fluidized bed with a fractionated gas inlet. The oxidizer agent, e.g. diluted oxygen, is fed through the lower catalytic bed entrance whereas the reactant hydrocarbon enters the bed at .

Oxidative dehydrogenation of ethane in a fluidized bed .

Dec 12, 2005 · The performance of a fluidized bed membrane reactor was studied in comparison to the conventional fluidized bed reactor for the oxidative dehydrogenation of ethane to ethylene. Significantly higher values for selectivity and yield of the desired ethylene were achieved for the FLBMR, for identical feed amounts and temperatures, however, at a .

Comparative study of propane oxidative dehydrogenation in .

To investigate performance of fluidized bed reactor in comparison to fixed bed micro-reactor, propane conversion and propylene selectivity were measured in temperatures of 480 to 550°C and GHSV of 48000, 60000, and 78000 cc/gr.hr at equimolar feed ratio of propane to oxygen.

Two-Zone Fluidized Bed Reactor (TZFBR) as a Potential Tool .

the last two decades the so called 'Two-Zone Fluidized Bed Reactor' (Figure 1.a). This reactor consists of a fluidized bed with a fractionated gas inlet. The oxidizer agent, e.g. diluted oxygen, is fed through the lower catalytic bed entrance whereas the reactant hydrocarbon enters the bed at .

Oxidative Dehydrogenation of Ethane on Oxide Materials in .

Abstract—. This paper presents a study of oxidative dehydrogenation of ethane (ODHE) on nanostructured single-component and multicomponent catalysts based on V 5+, Mo 5+, and Nb 5+ oxides and produced on alumina by molecular layering. It has been shown that the molybdenum-containing catalysts exhibit higher activity for ODHE in both single-component and binary samples .

Oxidative dehydrogenation of ethane in a fluidized bed .

Keywords: Fluidized bed reactor; Membrane reactor; Oxidative dehydrogenation; Ethane IntroductionEthylene mostimportant rawmaterials industrialorganic chemistry. worldcapacities itsproduction 109.4million t/year (2002) widelyapplied importanttechnical processes othervaluable base chemicals, e.g. poly- ethylene copolymers,ethylene oxide .

Fakultät III Prozesswissenschaften: Catalysis and membrane .

We develop catalyst materials mainly for the oxidative coupling of methane, oxidative dehydrogenation of propane, dry-reforming of methane, activation of CO 2 and CH 4 as well as for photocatalytic water. Furthermore, we focus on the development of ceramic membranes for gas separation, high temperature catalysis and catalytic membrane reactors.

Combination of a Two-Zone Fluidized Bed Reactor with a Pd .

Dec 01, 2009 · The Two-Zone Fluid Bed Reactor (TZFBR) is a system designed to counteract the catalyst deactivation. In this reactor one of the reactants (usually a hydrocarbon) is fed at an intermediate point, while a second stream (usually containing an oxidizing reactant) is fed at the bottom of the bed (see scheme in Fig. 1).In this way two zones with different atmosphere are created in the bed: a .

Jose Antonio Medrano Jimenez - Technical director - H2SITE .

Feb 08, 2013 · "Two-Zone Fluidized Bed Reactor (TZFBR) with palladium membrane for catalytic propane dehydrogenation: experimental performance assessment" Industrial Engineering Chemistry Research 52 (2013) 3723-3731. 2013

Dehydrogenation - an overview | ScienceDirect Topics

Sep 04, 2011 · Butane dehydrogenation was re-examined by Lobera et al. (2009) using a two-zone fluidized bed reactor with a supported Pt-Sn catalyst (Table 4-5). These authors were concerned with possible excursions into the detonation region for the C 4 /O 2 mixture and were thus able to study reactor performance with different concentrations of O 2 in the .

Oxidative dehydrogenation of n -butane and butenes over .

Oxidative dehydrogenation of n -butane, butenes and propane over Mo based catalysts in a two -zone flui dized bed reactor 1,3-butadiene is a very important building block chemical. It is besides styrene one of the necessary . fluidized bed reactor (temperature, oxygen/n -butane molar ratio, low .

Pd-Ag Membrane Coupled to a Two-Zone Fluidized Bed Reactor .

Abstract. Several reactor configurations have been tested for catalytic propane dehydrogenation employing Pt-Sn/MgAl2O4 as a catalyst. Pd-Ag alloy membranes coupled to the multifunctional Two-Zone Fluidized Bed Reactor (TZFBR) provide an improvement in propane conversion by hydrogen removal from the reaction bed through the inorganic membrane in addition to in situ catalyst .

Modeling and Simulation Study of an Industrial Radial .

2.1 Radial moving bed reactor model. The commercial radial moving bed reactor for propane dehydrogenation consists of a series of four reactors as shown in Figure 1.The reactor comprises two perforated coaxial cylinders to retain the catalysts.

Sensitivity Studies for Propane Oxidative Dehydrogenation .

In this paper, simulation and sensitivity studies for propane oxidative dehydrogenation to which were propylene in a circulating fluidized bed is undertaken using a previously developed model. Various experimental kinetics, obtained by several investigators for the reaction using different catalysts, are employed in this study.

DEHYDROGENATION OF PROPANE USING A METAL .

Nov 23, 2017 · A dehydrogenation reactor may include a single endothermic dehydrogenation zone or multiple endothermic dehydrogenation zones. The dehydrogenation reaction zones may be arranged as one or more of the following: a fixed bed, a fluidized bed, and spouted bed. All such configurations are well known in the art.

[PDF] Kinetic model and Simulation Analysis for Propane .

A kinetic model for propane dehydrogenation in an industrial moving bed reactor is developed based on the reported reaction scheme. The kinetic parameters and activity constant are fine tuned with several sets of balanced plant data. Plant data at different operating conditions is applied to validate the model and the results show a good agreement between the model predictions and plant .

Research | Fluidization Research Centre

Circulating Fluidized Bed Gasification Hydrodynamics of Hydrotreater Reactors. Behaviour of Turbulent Fluidized Beds Biomass Torrefaction in Fluidized Bed. Modeling and Simulation of Fluidized Bed Reactors. Sorbent Attrition in Fluidized CO2 Capture Systems. Dioxin/Furan Emissions from Fluidized Bed Combustion. Propane Dehydrogenation in a .

Two-Zone Fluidized Bed Reactor (TZFBR) with Palladium .

Catalytic propane dehydrogenation has been tested on different reactor configurations employing Pt–Sn/MgAl 2 O 4 as a catalyst. Hollow fiber palladium membranes coupled to the two-zone fluidized bed reactor (TZFBR) combine the possibility of improving propane conversion by hydrogen removal from the reaction bed through the membrane with in situ catalyst regeneration in the lower section of .

Different catalytic reactor technologies in selective .

It is suggested that circulating fluidized bed is a much preferred solution with respect to the acrylic acid/acrolein yield improvement. KEYWORDS: Circulating fluidized bed, fluidized-bed reactor, membrane reactor, propane selective oxidation, . Comparative study of propane oxidative dehydrogenation in fluidized and fixed bed reactor.