Continuous rectification Continuous and discontinuous rectification with packed, sieve tray and bubble cap tray column, system control via PLC Features - comparison of packed, sieve tray and bubble cap tray column - vacuum mode possible by diaphragm pump - plant control using an integrated PLC - integrated router for operation and control via an end device and for screen mirroring on additional end devices: PC, tablet, smartphone Learning objectives/experiments - investigation and comparison of sieve tray, bubble cap tray and packed columns -- in continuous mode -- in discontinuous mode -- in vacuum mode -- with different inlet heights for the feed flow -- with different numbers of trays (sieve tray and bubble cap tray column) - practice-oriented temperature control in the column -- reflux ratio as actuator for the top of the column -- heating power as actuator for the column bottom - determination of temperature profiles - pressure loss over the column - energy efficiency increase due to feed preheating - screen mirroring: mirroring of the user interface on end devices -- menu navigation independent of the user interface shown on the touch screen -- different user levels available on the end device: for observing the experiments or for operation and control Specification [1] continuous and discontinuous rectification [2] plant control with PLC via touch screen [3] integrated router for operation and control via an end device and for screen mirroring: mirroring of the user interface on up to 5 end devices [4] packed, sieve tray and bubble cap tray column, interchangeable [5] sieve tray and bubble cap tray column with 8 trays [6] packed column with Raschig rings [7] 3 feed inlets and 8 temperature sensors per column [8] electrically heated evaporator [9] condenser and phase separation tank for top product [10] adjustment of reflux ratio using valves [11] heat exchanger for feed preheating by bottom product or bottom product cooling by cooling water [12] water-saving due to closed cooling water circuit with water/air cooler [13] vacuum mode possible with diaphragm pump [14] areometer for determining the composition of feed/products included [15] data acquisition via PLC on internal memory, access to stored measured values via WLAN/LAN with integrated router/LAN connection to customer's own network or direct LAN connection without customer network [16] GUNT software for data acquisition via LAN under Windows 10 [17] tanks for feed, bottom and top product [18] all tanks made of DURAN glass and stainless steel [19] trays in sieve tray column and bubble cap tray column removable Technical data PLC: Eaton XV303 with I/O system XN300 Columns: height x inner diameter: 780x50mm Feed pump: max. flow rate: 320mL/min Cooling water pump: max. flow rate: 10L/min Diaphragm pump: final vacuum approx. 213mbar abs. Tanks, feed: 2x approx. 5L - bottom product: 2x approx. 5L - top product: approx. 1,9L Heat transfer surfaces - feed preheating/bottom cooling: approx. 0,03m2 - top product condenser: approx. 0,04m2 Tanks - phase separation: approx. 0,4L Measuring ranges - temperature: 33x 0...150°C - pressure sensor: 2x 0...2,5bar (column), 1x -1...1bar - manometer: -1...0,6bar - reflux ratio: 0...100% - power: 0...4kW (heater) - flow rate: 30...320L/h (cooling water) - density: 0,7...1g/mL 400V, 50Hz, 3 phases; 400V, 60Hz, 3 phases 230V, 60Hz, 3 phases; UL/CSA optional LxWxH: 1905x790x2200mm Weight: approx. 400kg