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Products  |  Process Engineering  |  Thermal Process Engineering  |  CE 602
CE 602 Discontinuous Rectification Show data sheet (pdf file) Print page
Technical Description

  Distillation is used to separate liquid mixtures made up of individual liquids that are soluble in one another. Rectification refers to distillation in a counterflow. Ethanol/water is recommended as the liquid mixture for the CE 602. 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 the 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.
  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.


Learning Objectives / 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

* Discontinuous rectification1
* Comparison of packed and sieve plate column1
* Vacuum mode possible1
* Plates in sieve plate column removable
Alternative products
CE 600 -- Continuous Rectification
CE 640 -- Biotechnical Production of Ethanol

[1] discontinuous rectification with packed and sieve plate column
[2] interchangeable columns
[3] sieve plate column with 8 plates
[4] packed column with Raschig rings
[5] vacuum mode possible with water jet pump
[6] electrically heated evaporator
[7] tank for top product
[8] condenser and phase separation tank for top product
[9] all tanks made of DURAN glass and stainless steel
[10] adjustment of reflux ratio using valves
[11] 8 temperature measuring points per column


Technical Data

Columns: internal diameter: 50mm, height: 765mm
Water jet pump: final vacuum: approx. 200mbar
- top product: approx. 2L

- phase separation: approx. 0.5L
- power output: 0...4kW
- tank: approx. 10L
Heat transfer surface
- top product condenser: approx. 0.04m

Measuring ranges
- temperature: 13 x 0...150C
- reflux ratio: 0...100%
- cooling water flow rate: 30...320L/h
- column differential pressure: 0...60mbar
- system pressure gauge:  -1...0.6bar


Dimensions and Weight
LxWxH: 1.300x750x2.100mm
Weight: approx. 185kg
Required for Operation

230V, 60Hz, 3 phase or 400V, 50/60Hz, 3 phase

Cold water connection: 500...1.000L/h

Scope of Delivery

1 trainer (with 2 columns)

1 set of hoses

1 set of accessories (tools, seals)

1 set of instructional material

Order Details
083.60200  CE 602  Discontinuous Rectification
© 2005 G.U.N.T. Gerätebau GmbH