Evaporators

  • An evaporator consists of a heat exchanger for boiling the solution and a means to separate the vapor from the boiling liquid.

  • Different types are categorized by the length (short-tube / long-tube) and alignment (horizontal / vertical) of the evaporator tubes. The evaporation tubes may be located inside or outside of the main vessel where the vapor is driven off.

  • Because many materials cannot tolerate high temperatures, evaporators often operate at reduced pressure so that the boiling point will also be reduced.