Question

Which of the following reactors is used for large \(\frac{C_p}{-H_R}\)?

(a) CSTR

(b) PFR

(c) Photocatalytic reactor

(d) Membrane reactor

The question was posed to me in an interview for job.

My query is from RTD for Chemical Reactors in section Distribution of Residence Time for Chemical Reactors of Chemical Reaction Engineering

Answer 1

The correct choice is (b) PFR

To explain I would say: If \(\frac{C_p}{-H_R}\) is high, then the gas either contains too much of inerts or the reaction system is in the liquid state. To achieve optimum temperature progression in such cases, PFR is used.