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Essentials of Chemical Reaction Engineering by H. Scott Fogler

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5.5.2 Flow Through a Packed Bed

The majority of gas-phase reactions are catalyzed by passing the reactant through a packed bed of catalyst particles.

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The equation used most often to calculate pressure drop in a packed porous bed is the Ergun equation4,5:

Ergun equation

5-22

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Term 1 is dominant for laminar flow, and Term 2 is dominant for turbulent flow, where

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In calculating the pressure drop using the Ergun equation, the only parameter that varies ...

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