The solution having to be distilled, stored in a glass tank, is sent to the distillation column by a metering pump after crossing a pre-heating exchanger. The distillation column is completely made of glass and it consists of a reboiler, of a bubble-cap-tray column and of a condenser with reflux head and valve. The bottom product and the distillate are collected into two tanks after being cooled by two heat exchangers. The automated version is equipped with PID controller: using two pneumatic valves, this controller can automatically control the flow rate of cooling water crossing the condenser and the vacuum degree of the plant.
TRAINING PROGRAM
This unit enables to deepen the following issues:
• Distillation of different mixtures (water / ethanol, water / methanol, methanol / propanol, etc…) versus the variation of the following operational parameters:
– reflux ratio
– feeding flow rate
– reboiler heating power
– feeding composition
– residual pressure
• Mass balance
• Energy balance
• Flooding
• Calculation of the number of theoretical trays
• Automatic flow and pressure control by PID controller
• Plant supervision by P.C.
TECHNICAL SPECIFICATIONS:
• Framework of AISI 304 stainless steel with castors
• Distillation column of borosilicate glass with 7 bubble cap trays, DN50, h = 600 mm
• Reboiler of borosilicate glass, with capacity of 3 l, including electric heater of 1600 W
• Condenser of borosilicate glass with reflux head
• Feeding tank of borosilicate glass with capacity of 5 l
• Tank of borosilicate glass with capacity of 1 l for the collection of distillate
• Tank of borosilicate glass with capacity of 2 l for the collection of bottom product
• 3 tube-in-tube heat exchangers of AISI 304 stainless steel
• Metering pump with head of AISI 316 stainless steel, flow rate of 0 to 8.5 l/h
• 6 thermo-resistances Pt100 with sheath of AISI 316 stainless steel
• 6 electronic indicators
• Thyristor unit for controlling the power of reboiler electric heater
• 2 programmable timers for the control of reflux ratio
• Variable area flowmeter of glass and steel, with range of 25 to 250 l/h
• Vacuum gauge of AISI 304 stainless steel, with range of 0 to -1 bar
• Vacuum circuit with trap of AISI 304 stainless steel
• Piping and valves of AISI 304 and AISI 316 stainless steel
• Switchboard IP55, complying with EC conformity mark, including plant synoptic and ELCB
• Emergency button
Besides being provided with all technical specifications, this model also includes the following additional items:
• Variable area flowmeter of AISI 304 stainless steel, with range of 25 to 250 l/h and 4-20 mA output signal
• Electronic residual pressure transmitter of stainless steel, range of 0 to 1000 mbar, 4-20 mA output signal
• Interface for the connection with the PC included in the switchboard
• Data acquisition software for Windows
Besides being provided with all Technical specifications, this model also includes the following additional items:
• Oil vacuum pump with flow rate of 4 m3/h
• Variable area flowmeter of AISI 304 stainless steel, with range of 25 to 250 l/h and 4-20 mA output signal
• Pneumatic valve of AISI 316 stainless steel for controlling the flow rate of condenser cooling water, Cv = 0.32
• Pneumatic valve of AISI 316 stainless steel for controlling the residual pressure, Cv = 0.32
• 2 electro-pneumatic converters of 4 to 20 mA/ 0.2 to 1 bar
• Electronic residual pressure transmitter of stainless steel, range of 0 to 1000 mbar, 4-20 mA output signal
• Microprocessor digital PID controller with serial card
• Supervision software for Windows: it enables to control ON-OFF signals, analog signals coming from the PID
controller, real-time trend and historical trend
• Power supply: 230 Vac 50 Hz single-phase – 2,5 kVA (Other voltage and frequency on request)
