Patent ID: 6132615
Filing Date: 2000-10-17
Classification: B01D

Abstract:
A method for separating liquids of different densities obtained in a liquid-liquid extraction which comprises (a) introducing a dispersion of said liquids by allowing same to flow into a feeding end of a settler; (b) adjusting the flow speed of the lighter liquid through a settler so that it is greater than that of the heavier liquid; (c) preventing flow turbulence at the border of the two liquids caused by said differing flow speeds by providing a heavier liquid drop dispersion layer between the two liquids extending along said border of said liquids until a discharge point of said settler; (d) passing said dispersion of liquids and settled liquids through at least three picket fences each of which forms a restricted transverse surface; (e) turning liquid flow at the first picket fence in a longitudinal direction of the settler; (f) allowing settled heavier liquid to flow freely in the bottom of the settler at the next picket fence; and (g) recovering separated liquid.