PIGNAT Stirred Liquid Liquid Extraction – ELA2000


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The liquid – liquid extraction in a stirred column

Liquid – liquid extraction is a fundamental material transfer operation 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 density. A stirring device 9, stirs the liquid in the column, increasing the contact between the two phases and the mass transfer from one to another.

Study of a continuous liquid – liquid extraction

  • Process parameters
  • Interphase level determination

Ternary diagram

  • Mass balance
  • Column effiency determination (HUT/NUT)

General Specification

  • 2 SS pumps, variable rate.
  • Glass decanter with light phase outlet, heavy phase feeding.
  • Glass column.
  • Stirring shaft, made of 20 SS Rushton type stirrer.
  • Glass decanter with heavy phase outlet, light phase feeding.
  • Inter-phase level setting by lateral crosshead.
  • Polyethylene storage tank, 10 L.


  • 2 flowmeters.

Dim : 140 x 60 x 240 cm – 120 kg
SS tubular framework 40 x 40mm

For a complete product data sheet please call 1-877-967-2726.