Triple-Effect Evaporator: Backward Feed

Organized by textbook: learncheme.com/ Describes how a triple-effect evaporator with backward feed concentrates a dilute solution. Made by faculty at the University of Colorado Boulder Department of Chemical and Biological Engineering. Check out our Separations and Mass Transfer playlist at • Separations/Mass Transfer

[@srikantkadiyala]

Good representation, practically possible but in India we are used to forward feed. Excellent explanation, simple & clear step by step demonstration.

[@fitrahberhan5021]

Hi, may I know what is the best way to simulate the backward feed multiple effect evaporator by using Aspen HYSYS? Is it by using the separator or the absorber column with reboiler?

[@atikahothman3130]

Hello. I am designing multiple effect evaporator. How do I know at what pressure should the first effect operate at? Should i operate the pressure at the boiling temperature of the feed?

[@samshaven3573]

Atikah Othman the boiling point of a solution is dependent on the pressure and vice versa. so u should operate the first effect at a pressure with a corresponding boiling temperature which is lower than the input steam.

[@devananthsr]

how does pressure affects the performance of evaporator. i have a system where second effect pump pressure is lesser than third effect. does it have any significance.

[@jaymalodedra765]

When we go from 1 evaporator to 2 and 3 what changes in volume of evaporator and why?