Biotechnical production of ethanol Batch conversion of starch-based raw materials into ethanol, system control via PLC Features - practical process for production of ethanol from starch-based biological raw materials - plant control using a PLC via touch screen - integrated router for operation and control via an end device and for screen mirroring on additional end devices: PC, tablet, smartphone Learning objectives/experiments - familiarization with the necessary individual steps and system components for production of ethanol: -- gelatinisation by steam injection -- liquefaction by use of alpha-amylase -- saccharification by use of gluco-amylase -- fermentation: conversion of sugar into ethanol by yeast cultures under anaerobic conditions -- distillation: separation of ethanol from the mash - 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] batch conversion of starch-based raw materials into ethanol [2] open mash tank with water-jacket cooling, steam injection and stirrer [3] closed fermentation tank with stirrer and water-jacket cooling/heating [4] distillation unit with 3 bubble cap trays, dephlegmator, condenser and stirrer [5] 2 pumps for delivering the mash [6] pH value control in the mash tank with acid and caustic delivered by metering pumps [7] adjustment of the amount of injected heating steam, the cooling water flow rates and the head temperature by means of PID controllers [8] plant control using a PLC; operated by touch screen [9] 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 [10] 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 Technical data PLC: Eaton XV303 Mash tank: 40L Fermentation tank: 50L Product tank: 10L Spent mash: 30L Distillation unit - column: DxH: 220x1200mm - sump capacity: 45L - sump heater: 0...7500W 2 air-operated diaphragm pumps, drive pressure: 2bar - max. flow rate: 15L/min - max. head: 20m - max. solid lump size: 4mm 2 metering pumps (acid and caustic) - max. flow rate: each 2,1L/h Measuring ranges - temperature: 10x 0...150°C - flow rate: 0...25L/min (to mash tank) - pH value: 2...10 - pressure: 0...10bar (steam) 400V, 50Hz, 3 phases; 400V, 60Hz, 3 phases 230V, 60Hz, 3 phases; UL/CSA optional LxWxH: 3500x1200x2000mm; Weight: approx. 500kg