Teaching equipment : Evaporator-Crystallizer

 

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Evaporator-Crystallizer

DESCRIPTION

 

Two separation technologies are combined on this unit:

- The Evaporator: Components for the partial or total separation of a liquid from a mixture by evaporation. Here, the partial evaporation of the solvent results in the saturation of the initial solution with respect to a specific solid in order to make the crystallization more efficient.
- The crystallizer: Allows for the crystallization of solid (solute) as the temperature of the solution is gradually lowered.

The mixture studied consists of a solvent (e.g. water) and a solid (e.g. FeSO4 or CUSO 4).

The unit is semi-automatic and can run continually.

A user manual is included.

 

Teaching equipment : Evaporator-Crystallizer - GPC VC1

TECHNICAL SPECIFICATIONS

1. Polyethylene supply tank

2. Dosing supply pump P1

- Flow rate: 0-16 L/h

3. Evaporator
- Borosilicate glass
- Equipped with a 316 L stainless steel coil
- Volume = 5 L
- Equipped with a capacitive level sensor that stops the heating at a low level

4. Distillate receiver 3 L
- Borosilicate glass

5. Crystallizer
- Borosilicate glass
- Equipped with a stainless steel coil
- Volume : 5 L

6. Agitator
- Agitation speed: 50-1750 rpm
- ADF pneumatic motor

7. Heating group with vapour service
- Hot water circuit equipped with a centrifugal pump of 0.75 kW with an ADF motor
- 2 single-tube exchangers
- Permit the regulation of the temperature in the evaporator and the hot water circuit
- 2 electro valves and 1 PID regulator
- 1 Pt 100


8. Condenser for the evaporator ECH 1
- 1stainless steel section, 1 borosilicate glass section

9. Cooling coil for the crystalliser ECH 2
- 316 L stainless steel

10. Exchanger for the distillate
- Borosilicate glass

11. Filter
- Borosilicate glass of polypropylene
- Volume = 5 L

QV1 : Water flow rate on the evaporator's

exchanger (0-100 L/h)
QV2 : water flow rate on the crystalliser's coil

(0-60 L/h)

MESURES DE TEMPERATURES

T1 : Water inlet into the double shell of the condenser ECH 1
T2 : Water outlet of the condenser ECH 1
T3 : Water outlet of the crystalliser's coil
T4 : Temperature of vapour
TRC 5 : Regulated temperature of the pressurized water (heating group)
TR6 : Temperature into the crystalliser

PEDAGOGIC APPLICATIONS

 

- Study of the process in batch or in continuous mode
- Thermal and matter balance
- Study of crystallization balance
- Kinetic study of crystallization
- Effect of agitation and temperature

 

 

WEIGHT AND DIMENSIONS
Length : 2200 mm
Width : 800 mm
Height : 2400 mm
Weight : 150 kg

Teaching equipment : Evaporator-Crystallizer - schema GPC VC1


 

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Evaporator-Crystallizer



Didatec Technologie - ZA du Parc 42490 Fraisses -  France -   Tel : 33 (0)4 77 10 10 10 -  Fax : 33 (0)4 77 61 56 49   
E-Mail : didatec.technologie@wanadoo.fr