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Dynamic Crossflow Filter

Pore sizes membranes/ filters:

  • Ceramic (asymmetric): Ultrafiltration 1–80 nm; microfiltration 0.2–2 µm
  • Metal: 1–200 µm

Membrane area: 0.03–32 m2

Processable viscosity: up to 7,000 mPas

Crossflow velocity: up to 7.3 m/s

Shear stress: up to 140,000 Pa

Operating feed pressure: 0-6 bar (isobaric processing possible)

Operating TMP: 0.3–2.0 bar (lower than other crossflow technologies)

Applications: Dairy, clarification of wine/beer/juice, neutraceuticals and functional ingredients (proteins, enzymes), industrial fermentation (proteins, enzymes, yeast, E. coli), animal processing, bioprocess engineering products, chemical or solvent recovery

 

 

Description

Unlike traditional crossflow filtration methods, the Andritz Dynamic Crossflow Filter (DCF) can concentrate the retentate to achieve a pasty or sludge consistency – making it much more effective.

 

The overlapping ceramic membrane disks rotate in the same direction to create a turbulent crossflow without using a pump to circulate the rentate. The wall shear stress generated is 50% higher than found in conventional crossflow filters – greatly reducing the formation of a clogging layer, while substantially improving the filtration rate at the same time. This advantage is most evident when dealing with high-viscosity retentates.

 

Additional information

Features & Benefits

80% reduction in energy consumption compared to traditional membranes, Designs for basic chemical to high-end, sterile pharmaceutical applications, Easy maintenance, Hermetic design, Highest possible yields by processing of highly concentrated suspensions up to viscosities of 7,000 mPas, Optimum product quality due to single-pass filtration concept, short residence times, no contact with gases, and minimum thermal and mechanical impact, Small footprint, easy transport and installation

Manufacturer

Andritz