Teaching equipment : Solid-liquid continuous extraction

Solid-liquid continuous extraction

DESCRIPTION   This unit provides a way of separating some of the components of a heterogeneous solid using an appropriate liquid solvent. It is possible to follow and analyse a continuous extraction process, controlling it by adjusting various parameters (Revolution velocity of the screw, mixture temperature…) A thermoregulator with pressurized water allows the unit to operate automatically. A user manual is provided. Possible studies : percolation, infusion, maceration, extraction. Examples : extraction of mint or lavender.

2 – Extractor
• Borosilicate glass – double-walled
• Length : 1 m
• 3 sampling openings
• 2 Pt 100 temperature calliper

3 – Supply tank for the solvent
• Volume 20 L

4 – Diaphragm pump
• Polypropylene head
• 15 L/h electronic at 7 bar (100 psi)
• 220 V single-phase – 50 Hz
 

5 – Thermoregulator – 6 kW
• Tmax : 120°C
• With cooling exchanger
• 220-240 VAC – 60 Hz – 30 A
• PID regulation on the command board

6 – Extract Receiver
• Borosilicate glass – 20 l

7 – Solvent recycling pump
• Centrifugal type 0.37 kW
• Stainless steel body and propellers
• Flow rate 40-400Ll/h

8 –Buchner filter
• continuous filtration
• stainless steel 316 L – volume 5 L

TEMPERATURE MEASUREMENTS
T1, T2, T3 : PT 100 probes
C1, C2, C3, C4 : Conductivity
Measuring cell : 0.04 to 200 µs/h