quick overview :

Stirred Liquid Liquid Extraction Pilot

This procedure consists in bringing a feed solute into contact with a more akin solvent. The extraction column is provided with a stirrer throughout its length. The stirrer is powered by a variable speed motor. At the top of the column, an azeotropic separator provides the separation of the two phases.

Teaching objectives

• Determination of the transfer units.
• Height of a unit of transfer.
• Efficiency of extraction.
• Mass balance.
• Calculation of the material exchange coefficient.
• Calculation of the theoretic number of stages.
• Concentration profile in the column.
• Practices on a system with three partially miscible components :
• Acetic acid – toluene – water
• Acetic acid – isopropyl ether – water
• Acetic acid – ethyl acetate – water

Technical specifications

• Extraction column in borosilicate glass, H = 600 mm.
• 1 Disk stirrer, stainless steel AISI 316 execution variable speed reducer 0-800 rpm - power 300 W.
• 2 decanters DN 100, in borosilicate glass.
• 4 tanks in polythene, capacity : 30 l ( 2 for feeding and 2 for the refined and extracted product ).
• 2 gear pumps with manual control, stainless steel body AISI 316, flow range 0- 40 l/h with check valve.
• Speed driver with display.
• Solvent flowmeter, in stainless steel and glass, scale : 4 to 40 l/h.
• Solution flowmeter, in stainless steel and glass, scale : 4 to 40 l/h
• Electric cabinet, IP 55, with transformers, start/stop switch, emergency stop, security device and synoptic.
• Technical manual

Dimensions

• 1800 x 800 x 2000 mm

Essential requirements

• Power supply : 220 V - 50 Hz