Question

The condition where reflux and stripping ratio approaches to infinity is called as

(a) Minimum reflux

(b) Total reflux

(c) Optimum ratio

(d) Feed ratio

The question was posed to me by my school teacher while I was bunking the class.

This intriguing question originated from Constant Molar Overflow and Other Assumptions topic in section Key Fractionation Concepts of Distillation Design

Answer 1

Right option is (b) Total reflux

The explanation is: Both balance lines approaches to coincide such a condition is called Total reflux, the slope of rectifying and stripping line matches each other.