Code: ETOPM10933
MULTI FUNCTIONAL THIN-FILM EVAPORATION PILOT PLANT.
INTRODUCTION
What distinguishes thin film evaporators with mechanical agitation from other types of evaporators is the turbulent thin film of process liquid appearing on the evaporating surface. The advantages are:
• shorter residence time
• high matter and heat transfer coefficients
• no fouling of surface
• no thermal decomposition
• possibility of processing even thick fluids (e. g.: tomato juice)
TRAINING PROGRAM
This unit enables to deepen
the following issues:
• Mass balance
• Energy balance
• Determination of evaporator heat exchange coefficient
• Automatic PID control (only in computer-aided version)
• Plant supervision (only in computer-aided version)
TECHNICAL SPECIFICATION
• Framework of AISI 304 stainless steel
• Max. feeding: 20 kg/h (higher flow rates on demand)
• Feed tank of borosilicate glass, with capacity of 10 l
• Tank of borosilicate glass, with capacity of 10 l, for the concentrated product
• Tank of borosilicate glass, with capacity of 10 l, for solvent
• Thin fi lm evaporator of AISI 316 stainless steel, DN 50 with rotor; distance of blades from wall: 0.5 mm; exchange
surface of 0.12 m²; double machanical seal lubricated with silicone oil and water cooled
• Shell-and-tube condenser of AISI 316 stainless steel (on tube side) and AISI 304 (on shell side), with exchange surface of 1 m²
• Feed metering pump of AISI 316 stainless steel, with flow rate of 0 to 20 l/h, driven by a signal of 0.2 to 1 bar
• Liquid-ring vacuum pump, P = 0.7 kW, provided with air/ water separator
• Graduated tank of borosilicate glass for condensate, with capacity of 1 l
• Variable-speed motor for rotor, P = 1 kW, driven by signal of 4 to 20 mA
• Electronic frequency variator for rotor motor, adjustable via signal of 4 to 20 mA
• 2 Bourdon spring pressure gauges of AISI 304 stainless steel, ranges of 0 to 6 and 0 to 1.6 bar
• Vacuum gauge of AISI 316 stainless steel, range of 0 to -1 bar
• Six Pt100 double thermoresistances with sheath of AISI 316 stainless steel
• 6 electronic temperature indicators
• Pneumatic valve of AISI 316 stainless steel, Cv = 0.32, for
controlling the steam flow rate to the evaporator
• 2 electropneumatic converters
• Switchboard with protection degree IP55 complying with EC
standards and including a differential circuit breaker and a
schematic diagram of the plant
• Connecting lines and valves of AISI 304 and 316 stainlesssteel
• Electronic transmitter of residual pressure with range of 0 to 1000 mbar, signal of 4 to 20 mA, made of AISI 316 stainless steel
• Pneumatic valve of AISI 316 stainless steel, Cv = 2.3, for
vacuum control
• Electropneumatic converter
• Microprocessor PID controller
• Supervision software this software runs in Windows and it is designed to control ON-OFF signals, analog signals coming from the controller, real-time trend
and historical trend
Dimensions: 2000 × 800 × 2800 mm
Weight: 500 kg
Supplied with THEORETICAL – EXPERIMENTAL HANDBOOK