Oxidative Conversion of Ethanol to Syngas in a Moving Bed Reactor. Effect of Gas-Dynamic Factors

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Abstract

An experimental study of oxidative conversion of ethanol to syngas in a filtration combustion moving bed reactor was conducted. The dependence of the composition of gaseous products on the flow rate of gaseous oxidizer at a constant excess air coefficient was investigated. The nonuniformity of the gas composition over the reactor cross-section was detected. A richer mixture flows in the central part of the reactor — the excess air coefficient values were 20–30% lower than the average value, and a leaner mixture flows in the near-wall region (15–20% higher than the average value). Numerical modeling of the part of the reactor where ethanol oxidation occurs qualitatively confirmed the presence of nonuniformity reactant concentration field and gas flow rates.

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About the authors

A. Yu. Zaychenko

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry of the Russian Academy of Sciences

Author for correspondence.
Email: fta@icp.ac.ru
Russian Federation, Chernogolovka

D. N. Podlesny

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry of the Russian Academy of Sciences

Email: fta@icp.ac.ru
Russian Federation, Chernogolovka

E. V. Polianczyk

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry of the Russian Academy of Sciences

Email: fta@icp.ac.ru
Russian Federation, Chernogolovka

M. V. Salganskaya

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry of the Russian Academy of Sciences

Email: fta@icp.ac.ru
Russian Federation, Chernogolovka

G. A. Tarasov

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry of the Russian Academy of Sciences; Kutateladze Institute of Thermophysics of the Siberian Branch of the Russian Academy of Sciences

Email: fta@icp.ac.ru
Russian Federation, Chernogolovka; Novosibirsk

M. V. Tsvetkov

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences

Email: fta@icp.ac.ru
Russian Federation, Chernogolovka

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Supplementary files

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2. Fig. 1. Dependence of volume concentration (V, %) of combustible components of ethanol conversion products on air flow rate (Gair, l/s): carbon monoxide - light squares; hydrogen - asterisks; ethylene - circles; methane - triangles.

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3. Fig. 2. Thermal image of the reactor during the ethanol conversion experiment.

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4. Fig. 3. Geometry of the modelled part of the laboratory reactor.

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5. Fig. 4. Gas flow velocity field along the length of the reactor in two planes: in the plane of the fuel supply channels (a); in the plane perpendicular to the fuel supply channels (b).

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6. Fig. 5. Oxygen concentration field along the reactor length in two planes: in the plane of the fuel supply channels (a); in the plane perpendicular to the fuel inlet (b).

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7. Fig. 6. Reagent concentration field along the reactor length: oxygen concentration (a); ethanol concentration (b).

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