How to choose the right wiped film evaporator ？

      Scratch film evaporators are widely used in industry and are indispensable equipment, so care must be taken in the selection.
      First, when selecting machinery and equipment, it depends on the heating area. The determination of the heating area of the thin film evaporator is determined by factors such as material balance, heat balance, and heat transfer calculation.
      Second, when recycling the general steam, it should use the introduction condenser, such as the tube type, spiral plate type heat exchanger; if the general steam does not need to be recycled, use a direct condenser, such as a water jet pump condenser, direct Atmospheric condensers, etc.
      Third, pay attention to the choice of choice: This is mainly to consider the size of the treatment volume, the boiling point of the evaporated material, and the number of equipment. If the amount of processing is large, multi-effect operation can be adopted; the more the effect, the less steam consumption, and the higher the equipment investment. If the boiling point rise value is large, the effective temperature difference is small, and the effect adopted is reduced.
      Fourth, according to the use of different can be divided into ordinary multi-effect evaporation system and forced circulation multi-effect thin wiped film evaporator. The forced circulation thin film evaporator is based on a multi-stage circulating thin film evaporator, and the external circulation pump is added.