Question

Smoker’s equation is based on assumption?

(a) Constant molar overflow and volatility

(b) Constant Molar overflow and viscosity

(c) Constant feed and stages

(d) Constant Pressure

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

This intriguing question originated from Analytical X-Y Diagram -Smoker’s Equation topic in section Column Process Design, Optimization and Shortcut Calculations of Distillation Design

Answer 1

The correct option is (a) Constant molar overflow and volatility

Easiest explanation: Smoker’s equation is based on assumption of Constant molar overflow and volatility, while McCabe and Ponchan are based on Constant molar overflow only.