Evaporation-Method of Operation of Evaporators

State the type of methods for operation of evaporators

• Single Effect Evaporator

• Double Effect Evaporator

• Triple Effect Evaporator

• Multi Effect Evaporator

Select the TRUE about Single Effect Evaporation

• The vapor from the boiling liquid is condensed and discarded

• Simple but utilizes steam ineffectively

• To evaporate 1 kg of water from the solution, require 1-1.3 kg of steam

• To evaporate 3 kg of water from the solution, require 1 kg of steam

All below statement are true for Multi Effect Evaporation, EXCEPT ?

• Economize the consumption of energy

• Steam from an outside source is condensed in the heating of first effect.

• The vapors are sent to a condenser for next effect evaporator.

• Small capacity but wasteful energy

Select all the Methods of Feeding of Evaporators

• Forward feed

• Backward feed

• Mixed feed

• Parallel feed

• Forward feed

• Backward feed

• Mixed feed

• Parallel feed

• Forward feed

• Backward feed

• Mixed feed

• Parallel feed