Relevant measured values are recorded by sensors and displayed digitally on the switch cabinet. The evaporator is adjusted using a PID controller. A large, clear process schematic on the switch cabinet makes it easy to assign all the process variables. The well- structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.

Features:
Discontinuous rectification1
Comparison of packed and sieve plate column1
Vacuum mode possible1
Plates in sieve plate column removable
Distillation is used to separate liquid mixtures made up of individual liquids that are soluble in one another. Rectification refers to distillation in a counter-flow. Ethanol/water is recommended as the liquid mixture for the Tesca Discontinuous Rectification 32368. The liquid mixture is added to the evaporator (bottom) tank. The mixed vapour produced moves upwards in the column. The mixed vapour contains a higher concentration of the component with the lower boiling point (ethanol). It leaves the top of the column and is condensed using a condenser and a phase separation tank. Part of the condensate is collected in a tank as product while the rest is fed back into the column. Here, on its way downwards, it undergoes further heating and material exchange with the rising mixed vapour. This exchange causes t he vapour phase to become richer in ethanol and the liquid phase to become richer in water. The liquid phase moves to the bottom where it is collected.

A sieve plate column and a packed column are available. The packed column is filled with Raschig rings.  The  reflux  ratio  is  adjusted  using  valves.

Specifications
Discontinuous rectification with packed and sieve plate column
Interchangeable columns
Sieve plate column with 8 plates
Packed column with Raschig rings
Vacuum mode possible with water jet pump
Electrically heated evaporator
Tank for top product
Condenser and phase separation tank for top product
All tanks made of high quality glass and stainless steel
Adjustment of reflux ratio using valves
8 Temperature measuring points per column

Technical Specifications
Columns: internal diameter: 50mm, height: 765mm Water jet pump: final vacuum: approx. 200mbar
Tanks
Top product: approx. 2000mL
Phase separation: approx. 500mL
Evaporator
Power output: 0...4kW
Tank: approx. 10L
Heat transfer surface
Top product condenser: approx. 0,04m²
Measuring ranges
Temperature: 13 x 0...150°C
Reflux ratio: 0...100%
Cooling water flow rate: 30...320L/h
Column differential pressure: 0...60mbar
System pressure gauge: -1...0,6bar

Experiments
Investigation and comparison of sieve plate and packed columns
In discontinuous mode
In vacuum mode
With different reflux ratios
With different numbers of plates
Determination of concentration profiles
Determination of temperature profiles
Pressure loss over the column

Requirement
Ÿ 220-240V, 50Hz, 3 phases or 380-440V, 50Hz, 3 phases
Cold water connection: 500...1000L/h

Note: Specifications are subject to change.
Tesca Technologies Pvt. Ltd.
IT-2013, Ramchandrapura Industrial Area, Sitapura Extension,
Near Bombay Hospital, Vidhani Circle, Jaipur-302022, Rajasthan, India,
Tel: +91-141-2771791 / 2771792; Email: info@tesca.in, tesca.technologies@gmail.com Website: www.tescaglobal.com