Nutsche filters are used for discontinuous cake filtration of suspensions with high solid concentrations. The suspension production unit CE 285 produces a suspension of diatomite and water and delivers it from above into the Nutsche filter. A filter bag is inserted in the Nutsche filter. A growing filter cake accumulates in the filter bag made from the separated solid material. The vacuum in the bottom section of the Nutsche filter draws filtrate through the filter cake and the filter bag. It is collected in the bottom section. After filtering, the filter cake obtained is washed with a washing liquid (water) and is dried by the applied vacuum before being removed.
CE 284 Nutsche vacuum filter
Features
- cake filtration with a Nutsche vacuum filter
Learning objectives/experiments
- basic principle and method of operation of a Nutsche vacuum filter
- fundamentals of cake filtration: Darcy’s equation
- mass and thickness of filter cake dependent on filtrate quantity
Scope of delivery
1 trainer
1 set of accessories
1 set of instructional material
Accessories
required
CE 285 Suspension production unit
Description
Technical details
Specification
- Nutsche vacuum filter for discontinuous cake filtration
- open 2-part vessel with flange and recessed sieve base
- bottom section to draw in and collect filtrate
- top section with inserted filter bag to form filter cake
- polyester filter bag
- manometer to indicate negative pressure in bottom section
- 2 sight glasses to observe level in bottom section
- production and transport of suspension with suspension production unit CE 285
Technical data
Vessel
- inner diameter: approx. 300mm
- capacity: approx. 55L
- permissible pressure: -1bar
- material: stainless steel
Manometer
- Ø 160mm
Measuring ranges
- pressure: -1…0bar
Dimensions and weight
LxWxH: 600x900x1900mm
Weight: approx. 100kg
Required for operation
water connection, drain; vacuum connection (200L/min, 200mbar abs.)
Media
Knowledge
Accessories
CE 284
Alternative products
Fundamentals of filtration: Darcy’s equation
Learning objectives/experiments
- fundamentals of filtration: Darcy’s equation
- depth filtration with different bulk solids and suspensions
- cake filtration with different suspensions
- identification of characteristic filtration values
Continuous cake filtration for separating solids from suspensions
Learning objectives/experiments
- learning the basic principle and method of operation of a drum cell filter
- fundamentals of cake filtration
- variation in time of filtrate quantity, filter cake mass and thickness
- filter cake mass and thickness dependent on filtrate quantity, negative pressure and drum speed
Discontinuous cake filtration by positive pressure
Learning objectives/experiments
- basic principle and method of operation of a Nutsche pressure filter
- fundamentals of cake filtration: Darcy’s equation
- mass and thickness of filter cake dependent on filtrate quantity
Discontinuous cake filtration for separation of solids from suspensions
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
….