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CE 600: Continuous Rectification

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Continuous Rectification

Continuous Rectification Continuous Rectification

Product Details


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 countercurrent. Ethanol/water is recommended as the liquid mixture for the CE 600. It is fed into the column. It partially evaporates on its way to the bottom of the column where it is heated to boiling. The mixed vapour produced then 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 this 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 and can be collected in two tanks.
A heat exchanger allows the feed to be preheated by the bottom product carried away from the column. A sieve tray column and a packed column are available. The sieve tray column has three connections at different heights for the feed. The packed column is filled with Raschig rings. The reflux ratio is adjusted using actuating valves. 
Relevant experimental parameters are recorded by sensors and displayed digitally and processed onto a PC. The software also allows adjustment of the evaporator and the reflux ratio using PID controllers.

Learning Objectives / Experiments
Investigation and comparison of separation efficiency of sieve tray and packed columns:
- In continuous mode
- In discontinuous mode
- In vacuum mode
- With different reflux ratios
- With different numbers of trays and inlet heights for the feed flow (sieve tray column)
- Energy efficiency increase due to feed preheating
- Determination of concentration profiles
- Determination of temperature profiles
- Pressure drop over the column
- Determination of theoretical number of stages in  McCabe-Thiele diagram

Features
* Discontinuous and continuous rectification1
* Comparison of packed and sieve tray column1
* Feed preheating using bottom product1
* Vacuum mode possible1
* Trays in sieve tray column removable1
* LabView software with control functions and data acquisition
Specification
[1] Continuous and discontinuous rectification with packed and sieve tray column
[2] Interchangeable columns
[3] Sieve tray column with 8 trays, 3 feed inlets
[4] Packed column with Raschig rings
[5] Vacuum mode possible with water jet pump
[6] Electrically heated evaporator
[7] Tanks for feed, bottom and top product
[8] Heat exchanger for bottom product cooling due to feed preheating and cooling water
[9] Condenser and phase separation tank for top product
[10] All tanks made of DURAN glass and stainless steel
[11] Adjustment of reflux ratio using actuating valves
[12] 8 temperature measuring points per column
[13] LabView software with control functions and data acquisition via USB under Windows XP

Technical Data
Columns: internal diameter: 50mm, height: 765mm
Feed pump:
- max. flow rate: 45L/h
- max. head: 18m
Water jet pump: final vacuum: approx. 16mbar
Tanks:
- feed: 2x approx. 5L; bottom product: 2x approx. 5L
- top product: approx. 2L
- phase separation: approx. 0.5L
Heat exchange surface areas:
- feed preheating/bottom cooling: 0.03m2
- top product condenser: 0.04m2
Measuring ranges:
- temperature: 16 x 0...150°C
- reflux ratio: 0...100%
- heater power output: 0...4kW
- column differential pressure: 0...250mbar
- cooling water flow rate: 30...320L/h
- system pressure gauge:  -1...6bar

Dimensions and Weight
l x w x h : 1300 x 750 x 2300 mm
Weight : approx. 250 kg

Connections
230V, 60Hz, 3 phase or 400V, 50Hz, 3 phase
Cold water connection: 200...600L/h

Scope of Delivery
1 rectification unit, 1 LabView software CD + USB cable, 1 set of instructional material

Order Details
083.60000  CE 600  Continuous Rectification
Alternative products
CE 602 -- Discontinuous Rectification
CE 640 -- Biotechnical Production of Alcohol

SELKA GmbH, Hamburg
Grindelallee 188, 20144 Hamburg / Germany
Tel.: + 49 (0) 40 343453 |  Fax: +49 (0) 40 63657075
E-Mail:
info@selkagmbh.com   |  Internet: http://www.selkagmbh.com

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