Details

Autor(en) / Beteiligte

• Goldnik, Denis
• Lösch, Philipp
• Ripperger, Siegfried
• Nikolaus, Kai
• Antonyuk, Sergiy

Titel

Diafiltration of Highly Concentrated Suspensions with Fine Particles by Dynamic Disk Filtration

Ist Teil von

• Chemical engineering & technology, 2021-12, Vol.44 (12), p.2191-2198

Ort / Verlag

Frankfurt: Wiley Subscription Services, Inc

Erscheinungsjahr

2021

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A method for washing highly concentrated suspensions with fine particles by using a filter with overlapping disks was studied. For the experiments, alumina and titanium dioxide suspensions were used. It was demonstrated that the used suspensions have non‐Newtonian behavior. The viscosity is influenced by the type of particle system, the solid concentration, and the shear rate. The washing process is operated in a discontinuous and a continuous way. The rotation of the disks and the shear flow across their surface prevents the formation of a filter cake and facilitates the handling of suspensions. The shear stresses at the filter disk and the rheology of the processed suspensions are both influenced by the type of particle system, the solid concentration, and the process parameters. Removal of mother liquor from suspensions or filter cakes by washing with a suitable washing fluid is important for product purity, e.g., in the pharmaceutical industry. A process for washing highly concentrated suspensions in a filter with overlapping disks was studied. The shear flow across the filter surface prevents the formation of a filter cake and facilitates the handling of suspensions.