Question

For an ideal plug flow reactor the value of the Peclet number is

• A. Zero
• B. Infinity
• C. 1
• D. 10

Hint:

Infinite Peclet number → ideal plug flow (no back mixing).

Answer 1

The Correct Option is B

Peclet number: \( Pe = \frac{UL}{D} \).
In ideal PFR, axial dispersion \( D \to 0 \Rightarrow Pe \to \infty \)