Falling film absorption Separation of oxygen from an air flow by absorption in a falling film column Features - separation of oxygen by absorption - continuous regeneration of the solvent with nitrogen by stripping - safe operation due to use of water as the solvent and non-hazardous gases - network capability: observe, acquire, analyse experiments via customer's own network Learning objectives/experiments - investigation of the absorption process during the separation of oxygen from an air flow in a falling film column - balance of the process - determination of the mass transfer coefficient depending on -- volumetric air flow rate -- flow rate of the solvent water - regeneration of the solvent by stripping - familiarisation with counterflow process Specification [1] transparent falling film column for the absorption of oxygen from the ambient air in water [2] continuous regeneration of the water (solvent) in a transparent desorption column by stripping with nitrogen [3] compressor supplies ambient air to the falling film column [4] 2 pumps supply water between the columns [5] valves and flow meters to adjust the flow rates of air and solvent [6] sensors rerecord oxygen concentration and temperature upstream and downstream of the absorption column [7] digital displays for all measuring values [8] network capability: observe, acquire, analyse experiments at any number of workstations with GUNT software via the customer's own LAN/WLAN network [9] data acquisition via customer’s own network or via direct LAN connection with GUNT software under Windows 10 Technical data Absorption column - inner Ø x height: 32x890mm - material: glass Desorption column - inner Ø x height: 24x1650mm - material: PMMA 2 pumps - max. flow rate: 58L/min each - max. head: 3,7m each Compressor - max. positive pressure: 2bar - max. flow rate: 23L/min Tank, stainless steel: capacity: approx. 50L Measuring ranges - flow rate: 38...380mL/min (water) - flow rate: 36...360NL/h (air) - temperature: 2x 0...50°C - oxygen concentration: 2x 0...20mg/L 230V, 50Hz, 1 phase; 230V, 60Hz, 1 phase 120V, 60Hz, 1 phase; UL/CSA optional LxWxH: 1930x790x1980mm Weight: approx. 135kg