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It is required to design an Isothermal Packed Bed Reactor ( PBR ) to handle a gas phase reaction A + 2 B 2 D

It is required to design an Isothermal Packed Bed Reactor (PBR) to handle a gas
phase reaction A+2B2D with a feed temperature of is 55C and pressure
of P atm. For safety reasons, feed contains inert gas. If the mole fractions of the
feed streams are 20%,50% and 30% for A, B and Inert I respectively. The total
volumetric feed rate is Volumetric flow rate dm3min. The properties of the gas
are similar to those of air at this temperature and pressure.
Given: The reaction follows a reaction rate expression of rA=2.5CA0.5CB1
(kmolm3*min).
The Molecular weight of A is 100gmol and Molecular weight of B is 50gmol.
Inert molecular weight is 28gmol.
Assume Variable density Case and without ignoring the pressure drop in the
reactor:
How much catalyst weight is needed to be filled in a 20ft length reactor packed
with catalyst (a C? inches diameter catalyst particles and bed porosity of 45%)
to achieve 95% conversion of A. The catalyst density is 2000kgm3.
How many D? inch diameter tube of 20ft legth is needed?
Plot the concentrations of all species, volumetric flow rate, pressure, and
conversion as a function of weight of catalyst?
Perform a sensitivity analysis to investigate the impact of the catalyst particle
size (C) on the pressure drop in accordance with your design parameters ,
D,P, and volumetric flow rate). Determine the minimum particle size required
to maintain a non-zero exit pressure?
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