Liquid-liquid extraction Separation of a two-component liquid mixture by extraction in counterflow with a solvent Features - separation of a liquid mixture by liquid-liquid extraction in counterflow operation - enrichment of extract using integrated distillation column - operation in either continuous or discontinuous process mode is possible - design and materials allow investigation of different ternary systems - adjustment and observation of phase boundary possible Learning objectives/experiments - transition of a component from a two-component liquid mixture into a solvent by extraction - scale-up from beaker experiment to pilot plant scale - enrichment of transition component in extract by distillation - evaluation of separation processes via concentration measurement and mass balances - influence of different experimental options on separation processes Specification [1] liquid-liquid extraction in counterflow operation with distillation for enrichment of the extract [2] operation as continuous or discontinuous process using 2 three-way valves [3] glass extraction column [4] distillation column and distillation bridge with Liebig condenser [5] electrical bottom heating via PID controller [6] water jet pump for reduction of evaporation temperature during distillation [7] stainless steel tanks for feed, solvent, raffinate, extract and top product (distillation) [8] 2 pumps to deliver the feed and solvent [9] 2 valves for adjusting the phase boundary [10] distillation column packed with Raschig rings [11] accessories housed in a storage system with foam inlay Technical data Columns - extraction: Ø 40mm, height: 1500mm - distillation: Ø 30mm, height: 415mm Bottom heater power output: 1200W Tanks - feed and raffinate: approx. 30L each - solvent and extract: approx. 15L each - top product (distillation): 15L - bottom tank (distillation): approx. 5L Feed pump - max. flow rate: 1600mL/min - max. head: 60m Solvent pump - max. flow rate: 1200mL/min - max. head: 10m Water jet pump, final vacuum: approx. 200mbar Measuring ranges - temperature: 1x 0...150°C, 1x 0...120°C - flow rate: 2x 100...850mL/min (water) - pressure: -1...0,6bar - conductivity: 0...1990µS/cm 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 1350x750x2150mm Weight: approx. 180kg