Reaction Behavior in Packed Bed Considering Bed Structure and Reaction Properties of Particles
نویسندگان
چکیده
منابع مشابه
Behavior of Packed Bed Thermal Storage
A packed bed thermal storage has several desirable characteristics to be used for energy storage. The behavior of packed bed is predicted by set of differential equations. A numerical solution is developed for packed bed storage tank accounting to the secondary phenomena of thermal losses and conduction effect. The effect of heat loss to surrounding (K1), conduction effect (K2) and air capacita...
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The propagation of a reaction front through a packed bed is analyzed theoretically. The chemical reaction rate is represented by Arrhenius temperature kinetics with external transfer limitation and general power law dependency on both gaseous and solid reactant concentrations. Analogous to so-called “Activation Energy Asymptotics” developed for premixed laminar flames, the largeness of the acti...
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The performance of the ThalesNano H-Cube(®), a commercial packed bed flow hydrogenator, was evaluated in the context of small scale reaction screening and optimization. A model reaction, the reduction of styrene to ethylbenzene through a 10% Pd/C catalyst bed, was used to examine performance at various pressure settings, over sequential runs, and with commercial catalyst cartridges. In addition...
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There has been continuous interest and fascination with the fluid dynamics of trickle-beds (i.e., cocurrent gas-liquid packed-bed reactors) at least since Weekman and Myers (1964) first proposed a regime map for their operation. Consistent with other flow regime maps before (Baker, 1954; for gas-liquid pipe flow) and since (e.g., Mandhane et al., 1974; for pipe flow), visual observations were u...
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Packed beds are essentially heterogeneous on a pellet scale. For random packed beds this heterogeneity causes a statistical character both on a pellet and bed scale. We discuss experimental results which deal with bed-scale statistics. For packed beds on a laboratory scale, the results indicate that the beclscale statistical behaviour introduces a spread up to a factor of three in correlations ...
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ژورنال
عنوان ژورنال: Tetsu-to-Hagane
سال: 2013
ISSN: 0021-1575,1883-2954
DOI: 10.2355/tetsutohagane.99.391