Pulsed Liquid-Liquid Extraction

Item Number:

ELL/4000

A standard-size, floor-standing unit that provides an in-depth, hands-on understanding of the basic, practical, and theoretical elements of the liquid-liquid extraction process.

Pignat's Pulsed Liquid-Liquid Extraction trainer (ELL/4000) is a standard-size, floor-standing unit that provides an in-depth, hands-on understanding of the basic, practical, and theoretical elements of the liquid-liquid extraction process.

Liquid-liquid extraction is a fundamental material transfer operation in chemical engineering based on the varying solubility of the components of a mixture. It entails extracting a compound from a solution (solute dissolved in a diluent) by selective transfer to a second liquid (solvent), non-miscible with the first and with different densities.

The unit is used manually, with flows controlled by manual valves and flowmeters. The unit has a 2"-diameter glass column, which enhances the visual experience of the extraction process. A pneumatic pulsator increases the contact between the two phases and mass transfer. Students learn how to determine the interphase level, material balance, efficiency of the column, and more.

Features

Study of pulsed liquid-liquid extraction process in a packed column
Continuous process

Specifications

Gear pumps SS/PEEK head with integrated safety valve
Glass decanter with heavy phase outlet, light phase feeding, and column draining
Glass column, packing of Raschig glass rings
Glass decanter with light phase outlet, heavy phase feeding, and column vent
Pneumatic pulsator, PTFE bellows, double effect cylinder, stroke and frequency control
Inter-phase level setting system by lateral crosshead, setting from the ground
2 float flowmeter