Suppose that a reactor used to pretreat a hot gas is a cylinder of diameter D =
Question:
Suppose that a reactor used to pretreat a hot gas is a cylinder of diameter D = 20 cm and length L = 2 m that is filled with spherical catalyst particles of diameter d = 5 mm. The void fraction is ε = 0.35, the gas properties are ρ = 0.705 kg/m3 and μ = 2.71 × 10−5 Pa · s, and the superficial velocity is vs = 0.5 m/s.
(a) Calculate for the packed bed.
(b) Suppose now that a change in the composition of the feed gas has made the pretreatment unnecessary and that it has been decided to bypass the packed bed with a pipe of the same length. If it were desired to keep
the same, so as not to affect other units in the plant, what pipe diameter Dp would be needed? (Re for the equivalent pipe is in the Blasius range, which makes it possible to derive an explicit expression for x = Dp/D.)
Step by Step Answer:
Introduction To Chemical Engineering Fluid Mechanics
ISBN: 9781107123779
1st Edition
Authors: William M. Deen