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CE 117: Flow through Particle Layers

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Flow through Particle Layers

Flow through Particle Layers Flow through Particle Layers Flow through Particle Layers

Product Details


Technical Description
Flow through particle layers is widely encountered in process engineering. In reactors, packed and fluidised beds are subjected to through-flow by liquids and gases. The separation of solids from suspensions by cake and depth filtration is another area of application.
With CE 117 the fluid mechanic principles involved in flow through packed beds and fluidised beds can be investigated. For the purpose, a fillable test tank made of glass is provided, through which water can be made to flow from both ends. A sintered-metal plate serves as the base for bulk solids.
 Water from the laboratory water connection flows into the test tank. To investigate flow through packed beds, the water enters the test tank from the top. It flows through the packed bed and the sintered-metal plate and passes by way of a distributor to the outlet.
 The experimentation set-up can be modified by means of quick-release hose couplings. This also enables the flow through the test tank to be reversed and fluidised beds to be investigated. The water flows upwards through the porous sintered-metal plate and the packed bed. If the velocity of the water is less than the so-called fluidisation velocity, the flow merely passes through the packed bed. At higher velocities a fluidised bed is formed. The water flows from the head of the test tank into an expansion tank. From there it flows into the outlet.
Regardless of the specific set-up, the flow rate is adjusted by a valve and indicated by a flow meter. To determine the pressure loss via the packed bed or fluidised bed, two manometers with differing measuring ranges are provided. The desired manometer is selected by way of valves.

Learning Objectives / Experiments
- Learning the fundamentals of flow through packed beds and fluidised beds (Darcy)
- Observation of the fluidisation process
- Pressure loss dependent on the flow rate, type, particle size and height of the bulk solid
- Determination of the fluidisation velocity and comparison with theoretically calculated values
- Verification of Carman-Kozeny equation

Features
* Experiments in the fundamentals of fluid mechanics on particle layers
* Flow through packed beds
* Flow through fluidised beds
* Pressure loss in packed beds and fluidised beds
Specification
[1] Investigation of the properties of packed and fluidised beds subjected to liquid flow
[2] Glass test tank with sintered filter medium on its base
[3] Test tank removable for filling
[4] Downward flow to investigate packed beds
[5] Upward flow to investigate fluidised beds
[6] Flow meter with valve for adjustment
[7] 2 manometers with differing measuring ranges to measure pressure loss through the test tank
[8] Steel rule to measure the height of the packed or fluidised bed

Technical Data
Test tanks
- length: 510mm
- inside diameter: approx. 37mm
- material: DURAN glass
Filter medium
- thickness: 2mm
- material: sintered metal
Expansion tank
- capacity: approx. 4.5L
- material: PVC
 Measuring ranges
- flow meter: 60...820ml/min
- 2-tube manometer (water): 0...50mbar
- U-tube manometer (mercury): 0...270mbar
- steel rule: 10...500mm

Dimensions and Weight
l x w x h : 680 x 410 x 1150 mm
Weight : approx. 42 kg

Connections
Water connection: approx. 1L/min
Drain recommended

Scope of Delivery
1 experimental unit, 1 packing unit of gravel (1...2mm), 2 packing units of glass-shot beads (180...300 / 420...590µm), 1 set of instructional material

Order Details
083.11700  CE 117  Flow through Particle Layers
Alternative products
CE 220 -- Fluidised Bed Formation

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