GLYCERINE SEPARATION and SOAP WASHING (SC-4)

When the saponification is completed, brine is added into the pan to separate the content into two phases: an upper phase containing soap, and a lower phase containing salt, caustic soda, impurities and glycerine. The lower phase is discharged into a vessel and can be sent to a glycerine recovery plant.

After further washing by dilution with water and separation with brine, the soap is drawn out of the pan and is pumped to a Vacuum Cooling and Drying Plant.