In traditional crossflow filtration, the feed is pumped in order to prevent a clogging layer from developing on the surface of the filter membranes. However, this method is neither efficient nor viable when handling sensitive or highly viscous products. That is why ANDRITZ SEPARATION designed the DCF. In its process chamber, overlapping, rotating disks generate a differential speed. This setup creates crossflow without requiring a pump to circulate the slurry and without any circulation line at all. The stationary principle of crossflow causes a zone of discontinuity at the entrance to the overlapping zone. This zone of discontinuity creates a very efficient, local cleaning effect due to the turbulent flow, which is directed in parallel, but also perpendicular to the membrane surface. The perpendicular component in particular generates high detaching forces, even in highly adhesive clogging layers.
The nutraceutical value of a protein stream is strongly dependent on the amount of dissolved and undissolved proteins. These values are important process characteristics that have to be maintained continuously in a predictable way. The factors influencing these values are...
Session: M3 - Cross Flow Techniques
Day: 14 March 2018
Time: 13:00 - 14:15 h