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 Products:  Process Engineering » Mechanical Process Engineering » Separation Methods: Filtration » CE 287
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CE 287: Plate and Frame Filter Press

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Plate and Frame Filter Press

Plate and Frame Filter Press Plate and Frame Filter Press Plate and Frame Filter Press

Product Details

Technical Description
Plate and frame filter presses are used in the beverage industry, for example, to clarify intermediate products.
A suspension of diatomite and water (recommended) is prepared in a stirred tank. The stirrer ensures that the solid remains suspended and does not settle. A pump delivers the suspension into the individual separating chambers of the plate and frame filter press. A separating chamber is formed by one filter frame and two filter plates. The filter plates are grooved and covered over with filter cloths. The filtrate passes through the filter cloth and flows via the grooves in the plates into a collecting pipe. The filtrate exits the plate and frame filter press through the collecting pipe and is collected in the filtrate tank. The solid material is separated off at the filter cloth, where it forms a growing filter cake. As the filter cake becomes thicker, its flow resistance also increases. When the separating chamber is full, or a maximum pressure difference has been reached, the filtration process is ended. The plates and frames of the plate and frame filter press are pulled apart. The filter cake can be removed. For the next filtration the plates and frames must be pushed back together. A spindle is used to press them together. The press forces ensure that the suspension does not leak from the contact points between the plates and the frames, but is forced through the filter cloth.
The flow rate through the plate and frame filter press is adjusted by a valve. The pressure occurring during filtration is indicated on a manometer. The filtrate tank is scaled. This means a stopwatch can be used to measure the flow rate. An included opacimeter allows the solid concentration of the filtrate to be determined. A drying chamber is recommended for evaluation of the experiments.

Learning Objectives / Experiments
- Learning the fundamental principle and method of operation of a plate and frame filter press
- Production of a suspension
- Removal of the filter cake
- Insertion of the filter cloth
- Fundamentals of cake filtration: Darcy's equation
- Variation in time of filtrate quantity and solid concentration in filtrate
- Mass of filter cake dependent on filtrate quantity

* Separation of solids from suspensions with a plate and frame filter press
* Discontinuous cake filtration
* Practical experiments on a laboratory scale
[1] Plate and frame filter press for discontinuous cake filtration
[2] HDPE tank with stirring machine to produce a suspension
[3] Centrifugal pump to deliver the suspension to the plate and frame filter press
[4] Plate and frame filter press with 16 opening separating chambers for removal of the filter cake
[5] PMMA tank with level scale for filtrate
[6] Adjustment of suspension flow rate by valve
[7] Stirring machine with adjustable speed
[8] Thermometer and manometer in inlet
[9] Portable opacimeter to measure the solid concentration in the filtrate

Technical Data
Plate and frame filter press
- filter area: approx. 0.64m2
- working pressure: approx. 0.4...1.8bar
Centrifugal pump (submersible pump)
- max. flow rate: 4.5m3/h
- max. head: 45m
Stirring machine
- power consumption: 140W
- speed: 30...1000rpm
- stirred tank: 200L
- filtrate: 20L
Measuring ranges
- pressure: 0...4bar
- temperature: 0...60°C

Dimensions and Weight
l x w x h : 1500 x 800 x 1500 mm
Weight : approx. 140 kg

230V, 50 Hz, 1 phase
Water connection

Scope of Delivery
1 plate and frame filter press, 1 portable opacimeter, 1 stopwatch,1 set of filter cloths, 1 set of instructional material

Order Details
083.28700  CE 287  Plate and Frame Filter Press

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