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 Products:  Process Engineering » Mechanical Process Engineering » Separation Methods: Separation in a Centrifugal Force Field » CE 225
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CE 225: Hydrocyclone

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Hydrocyclone Hydrocyclone Hydrocyclone

Product Details

Technical Description
Hydrocyclones can be used to separate solids suspended in liquids. In CE 225, the suspension is prepared in a tank. A stirrer prevents premature settling of the solid particles. An eccentric screw pump delivers the suspension into the tangential inlet of the cyclone. In the cyclone a downward primary vortex is created. The downward taper causes the vortex to reverse. In the middle it moves as a secondary vortex back up towards the immersion tube, where the suspension emerges from the cyclone, having lost the coarse material in it. Inside the cyclone an air core is formed. The centrifugal forces cause the coarser solid particles in the primary vortex to be enriched. They are discharged with the bottom flow at the apex nozzle. It is mainly the fine material that is discharged from the top.
The outflow form of the bottom flow changes depending on the solid concentration of the introduced suspension. Where the solid concentration is high, strand discharge occurs. Where the solid concentration is low, the discharge is fan-shaped.
The flow rate in the inlet is adjusted by way of the pump speed and measured with a magneto-inductive flow meter. Sampling points are installed at the bottom and top flow points. The flow rates in them can be determined by means of a measuring cup and a stopwatch. To determine the solid concentration, a balance and a drying chamber are recommended. Using a suitable analysis device (such as a diffraction spectrometer), a separation function can be produced and the separation size determined. Quartz powder is recommended for use as the solid.
The trainer was developed in cooperation with the Department of Mechanical Process Engineering at Anhalt University of Applied Sciences.

Learning Objectives / Experiments
- Learning the fundamental principle and the method of operation of a hydrocyclone
- Pressure loss at the cyclone dependent on the feed flow rate
- Ratio of flow rate in top and bottom flow dependent on feed flow rate
- Determination of the pressure loss coefficient of the cyclone
- Calculation of the proportionate coarse and fine material content
- Separation function and separation size (with suitable analysis device)
- Observation of fan and strand discharge dependent on the solid concentration of the feed flow rate

* Solid separation with a hydrocyclone1
* Observation of fan and strand discharge1
* Practical experiments on a laboratory scale
[1] Solid separation from liquids with a hydrocyclone
[2] Hydrocyclone with tangential inlet
[3] Stirred tank for preparation of suspensions
[4] Stirrer with adjustable speed to keep solid suspended
[5] Eccentric screw pump with pressure limiter to deliver the suspension
[6] Adjustment of flow rate by way of pump speed
[7] Magneto-inductive flow meter at inlet
[8] Sampling points on the top and bottom flow to determine the flow rates and solid concentrations
[9] 1 pressure measurement point to determine the pressure loss at the cyclone

Technical Data
- height: approx. 400mm
- diameter: approx. 100mm
- immersion tube diameter: approx. 40mm
Stirred tank: 100L
Eccentric screw pump
- max. head: 60m
- max. flow rate: 150L/min
Measuring ranges
- pressure: 0...6bar
- flow rate: 0...150L/min

Dimensions and Weight
l x w x h : 1500 x 1000 x 2200 mm
Weight : approx. 120 kg

400V, 50Hz, 3 phases

Scope of Delivery
1 hydrocyclone, 1 set of sample flasks, 2 measuring cups, 1 stopwatch, 1 set of instructional material

Order Details
083.22500  CE 225  Hydrocyclone

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