Question

The design equation of PBR to determine the weight of the catalyst is ________

(a) \(\frac{W}{FA0} = \int_0^X \)-rA dX

(b) \(\frac{W}{FA0} = \int_0^X \frac{dX}{dV} \)

(c) W = FA0 \(\int_0^X \frac{dX}{-rA} \)

(d) W = \(\int_0^X \)FA0 dX

I got this question in semester exam.

This key question is from Design Equations for Flow Reactors topic in division Ideal Reactors for a Single Reaction, Conversion and Reactor Sizing of Chemical Reaction Engineering

Answer 1

Right option is (c) W = FA0 \(\int_0^X \frac{dX}{-rA} \)

Explanation: The general mole balance for flow reactors is modified to get the above equation. The reaction rate is expressed in mol/s.g of catalyst in this equation.