The objective of this book is to develop a model and an algorithm to design a multiple effect evaporator(MEE) system with vapor compression and without vapor compression. To achieve the target a model based on nonlinear equations is developed to design the Septuple effect falling film evaporator (SEFFE)system to concentrate black liquor from paper industry. For the designed system, the live steam requirement is evaluated without any vapor compression as well as with vapor compression

This book investigates the effect of tray spacing on the dimensions, head losses and flooding tendencies in a sieve - tray distillation column. The system under consideration was chosen to be a 50:50 mole % mixture of methanol and water at its boiling point. The saturated liquid feed is separated into products streams of 99.5 mole % purity. For a given sieve tray (holes arranged in a triangular pitch) with fixed specifications of hole diameter, pitch, tray thickness, weir height and proportion of downcomer area, the variables were determined for values of tray spacing ranging from 0.5 feet...