An agitated nutsche filter dryer (ANFD) is a type of filtration and drying equipment used in chemical, pharmaceutical, and other process industries for solid-liquid separation and drying of powders or slurries. The term "nutsche" is derived from the German word "nutsche," meaning filter, and it describes the vessel used in this equipment.
The slurry or suspension is fed into the nutsche filter dryer, which contains a perforated plate or a filter medium at the bottom. The liquid phase (filtrate) passes through the filter medium, leaving behind the solid particles on the filter surface.
If required, the solid cake can be washed with a suitable solvent or washing liquid to remove impurities or mother liquor.
After filtration and washing, the remaining wet cake needs to be dried. In an agitated nutsche filter dryer, the vessel is equipped with an agitator or stirring mechanism. This agitator breaks up the cake and promotes efficient drying by exposing more surface area to the drying medium (usually hot air or inert gas).
Once the drying process is complete, the dried solid material can be discharged from the nutsche filter dryer vessel.
The agitated nutsche filter dryer offers several advantages, including efficient filtration and drying in a single vessel, reduced processing time, minimized product loss, and improved product quality. It is commonly used in industries where the separation and drying of solids from liquid suspensions or solutions are crucial steps in the manufacturing process.
We at Kumar Process offer ANFDs with interchangeable multilayered sintered filter media made from Stainless steel 316 grade or Hastelloy C276/C-22. These media are quite robust when compared to traditional cloth media used in ANFDs, which are prone to damage which can lead to product contamination. We can offer the sintered filter media in sizes as large as 3 metres in diameter.