Teaching equipment : Evaporator – double effect

Evaporator – double effect

DESCRIPTION   This unit is designed to separate a solid (solute) from a solvent or to raise the concentration of solute in the solution. This separation occurs through the complete or partial evaporation of the solvent. This unit enables one to observe and control a double evaporation process. It is equipped with two evaporators heated by a thermal fluid : the outgoing vapor of the first one is the heating vapor for the second one. In order to operate semi-automatically, data collected by the unit is sent to a command box, which in turn transmits it to a PC containing the required software. (This software is an optional extra)

Practical applications include changing the concentration of dissolved substances in fruit juice and milk or for desalinating sea water and brackish water.

2. Diaphragm pump
• Flow rate 0 – 83 L/h
• Outlet 4 – 20 mA

3. Thermostatic bath
• P = 2 000 W
• PID regulator

4. Supplying pre-heater
• Borosilicate glass
• S = 0.2 m²

5. Evaporators
• Height : 1 200 mm
• Diameter : 25 mm
• Double-walled
• Stainless steel

6. Centrifugal separator
• Stainless steel

8. Recipe of product
• Borosilicate glass
• V = 5 L

9. Recipe of condensate
• Borosilicate glass
• V = 5 L

10. Pressurized water thermoregulator
• P = 6 kW
• Portable – on wheels

MEASUREMENTS

T1 : 7 temperature sensors
C : 2 conductivity sensors

OPTION

Vapour making boiler – data acquisition system and graphic diagram transmitted to a PC by a software