MODELING AND SIMULATION OF THE OXIDATIVE DEHYDROGENATION OF ETHANE TO ETHYLENE IN A TURBULENT FLUIDIZED BED REACTOR
MODELING AND SIMULATION OF THE OXIDATIVE DEHYDROGENATION OF ETHANE TO ETHYLENE IN A TURBULENT FLUIDIZED BED REACTOR
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DOI: https://doi.org/10.22533/at.ed.31741124120410
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Palavras-chave: Lecho fluidizado; Deshidrogenación oxidativa; Etano; Etileno.
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Keywords: Fluidized bed; Oxidative dehydrogenation; Ethane; Ethylene;
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Abstract:
The present work evaluates the potential use of a fluidized bed reactor on an industrial scale for the production of ethylene through the oxidative dehydrogenation of ethane, with a multimetallic catalyst. For this purpose, a reactor of industrial dimensions operated under turbulent fluidization was modeled and simulated, with a catalyst based on mixed multimetallic oxides (MoVTeNbO). The model contemplates two sequential zones characteristic of these reactors, a dense zone, rich in catalyst particles, followed by a region diluted in catalyst ("freeboard"), and in which a continuous flow of gas and solids is contemplated. The kinetic model used is based on the Eley-Rideal formulism and contemplates a kinetic scheme that considers the oxidative dehydrogenation of ethane to ethylene and the oxidation reactions of these to carbon oxides. Different feed and operating conditions of the reactor were considered, where the operating temperature, the feed composition and the surface velocity of the gas were varied, and the conversion and yields were determined for each case. The results suggest that the oxidative dehydrogenation reaction of ethane has the potential to be carried out at turbulent fluidization conditions at an industrial level, mainly at the high temperature and conversion conditions studied.
- RICHARD STEVE RUIZ MARTÍNEZ
- David Uriel Zamora Cisneros