Question

The gas phase irreversible reaction is carried out isothermally in a PBR A → B

The reaction is zero order. The entering temperature is 400 K, and the entering pressure is 10 atm. The flow is turbulent. For a 10 kg PBR with a pressure drop parameter α = 0.01 kg-1, the exit conversion was found to be

0.4. What catalyst weight of the PBR will you require if you need an exit conversion of 0.8, assuming that the particle diameter is decreased by a factor of 2 so that the pressure drop parameter is now increased to α = 0.02 kg-1? Assume all other operating conditions are the same as for the base case (i.e. W = 10 kg).

Answer #1

**Answer:** Catalyst weight of the PBR will you
require if you need an exit conversion of 0.8 is

**W= 20 kg**

Solution-

Given data:

Reaction :

Exit conversion = 0.4 (initial case)

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0.6
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