Question

The value of HETP for most packing is?

(a) 100 mm to 600 mm

(b) 300 mm to 800 mm

(c) 200 mm to 900 mm

(d) 500 mm to 600 mm

This question was addressed to me during an interview for a job.

The question is from Tray Flooding Mechanism topic in chapter Tray Design and Operation of Distillation Design

Answer 1

Right choice is (b) 300 mm to 800 mm

Easy explanation: The corresponding value for structural packing is somewhat lower. Smaller the packing, lower the HETP value.