Continuous and discontinuous extraction of the soluble components of a solid Features - discontinuous and continuous solid-liquid extraction - 1-, 2- or 3-stage modes possible - regenerable extraction material - software with control functions and data acquisition Learning objectives/experiments - fundamentals of solid-liquid extraction - demonstration of solid-liquid extraction as a continuous and discontinuous process - investigation of 1-, 2- and 3-stage processes - influence of solvent flow rate and temperature on the extraction process - influence of extraction material feed rate and extractor revolving speed on the extraction process Specification [1] revolving extractor for continuous and discontinuous solid-liquid extraction [2] switching to 1-, 2- or 3-stage modes possible by valves [3] extractor revolving speed adjustable by potentiometer [4] spiral conveyor with variable speed to adjust the extraction material feed rate [5] flow rate of solvent adjustable for each stage via speed of pumps [6] temperature of solvent adjustable for each stage by PID controller [7] tanks for extraction material, extraction residue, solvent and extract [8] software for data acquisition via USB under Windows 10 Technical data Extractor - 9 cells - rotor diameter: approx. 200mm - speed: approx. 0...9h-1 - motor power consumption: approx. 0,9W Spiral conveyor - max. feed rate: approx. 20L/h - motor power consumption: approx. 4W 4 peristaltic pumps - max. flow rate: approx. 25L/h at 300min-1 and hose 4,8x1,6mm 3 heaters - power consumption: approx. 330W Tanks - extraction material: approx. 5L - extraction residue, solvent, extract: each approx. 20L Measuring ranges - flow rate:: 1x 0,025...0,5L/min - conductivity: 4x 0...20mS/cm - temperature: 4x 0...50°C 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 1360x780x1900mm Weight: approx. 150kg
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