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