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 Products:  Process Engineering » Mechanical Process Engineering » Separation Methods: Separation in a Centrifugal Force Field » CE 235
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CE 235: Gas Cyclone

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Gas Cyclone

Gas Cyclone Gas Cyclone Gas Cyclone

Product Details

Technical Description
One area of application of gas cyclones is the pre-filtration of solids from gases. Gas cyclones have no moving parts, and so are low-maintenance systems. They can also be used in conjunction with high gas temperatures. For these reasons they are in widespread use.
This trainer was developed in cooperation with the Institute for Solids Process Engineering and Particle Technology at TU Hamburg-Harburg. A disperser is used to disperse the feed material (quartz powder recommended) finely in an airflow. The airflow laden with solid material (raw gas) in this way is fed tangentially into the cyclone at the top. In the cyclone, the airflow moves downwards as a rotating primary vortex. At the bottom of the cyclone the vortex is reversed. In the middle of the cyclone it moves as a secondary vortex back up towards the immersion tube, where the cleaned gas emerges from the cyclone. The main separation process takes place in the primary vortex. Owing to the centrifugal forces and the difference in density between the air and the solid, the coarse solid particles move towards the wall. They slide down the wall and are collected in a tank at the bottom of the cyclone. No complete separation of the entire solid material takes place. The fine particles which are smaller than the separation size are ideally discharged from the immersion tube at the top with the secondary vortex. This fine material is separated out of the air flow by a filter. The separation size defines the theoretical boundary between the fine and coarse material.
The solid content of the raw gas can be adjusted by means of the disperser and an airflow control valve. To prevent loading of the airflow with particles upstream of the disperser, the drawn-in room air is filtered. An air suction fan generates the airflow. Pressure measurement points at the relevant positions in the trainer enable to determine the pressure loss.
For particle size analyses of the feed and the coarse material, a balance and a screening machine (CE 264) are recommended.

Learning Objectives / Experiments
- Influence of solid content and airflow rate on
  + pressure loss at the cyclone
  + degree of separation
  + separation function and separation size
    (with CE 264)
- Comparison of pressure loss and degree of separation with theoretically calculated values

* Solid separation with a gas cyclone
* Transparent cyclone to observe the separation process
* Practical experiments on a laboratory scale
[1] Solid separation from gases with a cyclone
[2] Cyclone with tangential inlet
[3] Metering of feed material into the airflow with a disperser
[4] Airflow generation by fan; adjustment by valve
[5] Tanks for feed material and coarse material
[6] 1 filter for fine material and 1 filter at air inlet
[7] Measuring points to record pressures, airflow rate and temperature

Technical Data
- height: approx. 250mm
- diameter: approx. 200mm
- immersion tube diameter: approx. 50mm
- power consumption: approx. 2kW
- feed material: 10L
- coarse material: 10L
Measuring ranges
- cyclone differential pressure: 0...100mbar
- airflow rate: 10...100m3/h
- temperature: 0...100°C

Dimensions and Weight
l x w x h : 1000 x 600 x 2200 mm (without fan)
Weight : approx. 120 kg

230V, 50Hz, 1 phase
Compressed air connection recommended for cleaning

Scope of Delivery
1 gas cyclone, 1 fan, 1 set of instructional material

Order Details
083.23500  CE 235  Gas Cyclone

SELKA GmbH, Hamburg
Grindelallee 188, 20144 Hamburg / Germany
Tel.: + 49 (0) 40 343453 |  Fax: +49 (0) 40 63657075
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