Comparison of packed and sieve tray columns in rectification Features - discontinuous rectification - comparison of packed and sieve tray column - vacuum mode possible - trays in sieve tray column removable Learning objectives/experiments - investigation and comparison of sieve tray and packed columns -- in discontinuous mode -- in vacuum mode -- with different reflux ratios -- with different numbers of trays - determination of concentration profiles - determination of temperature profiles - pressure loss over the column Specification [1] discontinuous rectification with packed and sieve tray column [2] interchangeable columns [3] sieve tray column with 8 trays [4] packed column with Raschig rings [5] vacuum mode possible with water jet pump [6] electrically heated evaporator [7] tank for top product [8] condenser and phase separation tank for top product [9] all tanks made of DURAN glass and stainless steel [10] adjustment of reflux ratio using valves [11] 8 temperature measuring points per column Technical data Columns: internal diameter: 50mm, height: 765mm Water jet pump: final vacuum: approx. 200mbar Tanks - top product: approx. 2000mL - phase separation: approx. 500mL Evaporator - power output: 0...4kW - tank: approx. 10L Heat transfer surface - top product condenser: approx. 0,04m2 Measuring ranges - temperature: 13x 0...150°C - reflux ratio: 0...100% - flow rate: 30...320L/h (cooling water) - differential pressure: 0...60mbar (column) - manometer: -1...0,6bar 400V, 50Hz, 3 phases 230V, 60Hz, 3 phases, 400V, 60Hz, 3 phases UL/CSA optional LxWxH: 1300x750x2100mm Weight: approx. 210kg