process variables, classify input and output variables, determine control objectives and appropriate manipulated variables for Evaporators

Process Variables

Level of Solution, Temperature of Solution, Concentration Density.

Input Variables

Dilute feed Solution, Steam Flow.

Output Variables

Vapor, Steam, Product.

Control Objectives

The main objective of evaporators is to get a concentrated product by vaporizing volatile liquid, Out evaporation process, Evaporation is conducted by non volatile solids and volatile solvent to produce this liquid.

Manipulated Variables

Flow Rate of the feed solution, Discrete signal of the outlet value control.