EDPAB Double Effect Rising Film Evaporator

DOUBLE EFFECT RISING FILM EVAPORATOR - EDPAB

Unit: EDPAB. Double Effect Rising Film Evaporator

創新系統

The "EDPAB" unit, designed by EDIBON, allows to observe and control a serial, parallel or double effect evaporation process.

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一般說明

The Double Effect Rising Film Evaporator, "EDPAB", designed by EDIBON, allows to observe and control a serial, parallel or double effect evaporation process.

The unit consists of two evaporators with a single glass tube, allowing the student to observe all the processes that take place in the unit.

The solution to be concentrated enters the evaporator and, as it flows along the tube, it is progressively evaporated since an annular flow or rising film flow is generated internally, keeping that film thanks to the friction induced by the vapour nucleus, which moves at high speed with regard to the liquid film. The supply enters the rising tube in liquid state for a short distance, receiving heat from the steam.

Steam introduced in the first evaporator can be introduced again in the second evaporator (serial operation mode) or either two different steam flows can be introduced (parallel operation mode).

The unit also allows the steam generated in the first evaporator to be introduced as heating medium in the second evaporator and the concentrated product obtained can be used as supply for the second column. Thus, one of the main premises of a double effect evaporator, which is the economy of the heat employed, can be evaluated.

練習和指導練習

手册中包含的指导实践练习

  1. Heating efficiency calculation.
  2. Sugared solution concentration.
  3. Evaporation velocity determination.
  4. Study of the evaporation velocity in function of the working conditions.
  5. Study of the relation between condensed and evaporated product.
  6. Study of the mass balance of the solute.
  7. Study of the mass balance of the solvent.
  8. Energy balance of the evaporation unit.
  9. Energy balance of the tubular refrigerator.
  10. Heat transfer global coefficient determination.
  11. Heat transfer coefficient determination of a tubular refrigerator.
  12. Study of the mass balance of the solute in one column.
  13. Fruit juices and vegetable extracts concentration.
  14. Concentrated milk obtaining.
  15. Efficiency determination of the steam used in the process.
  16. Steam generator efficiency determination.
  17. Investigation of effect of varying process parameters such as:vacuum, flow rate, temperature, recycle rate.

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