AGITATED NUTSCHE FILTER (ANF)

    Agitated Nutsche Filters offer an economic operation where maximum percentage of liquid in a slurry is separated through mechanical means. The remaining little moisture can be removed by evaporation to obtain dry products. It consists of a cylindrical shell with welded dished end at the top and either a flanged and bolted dished end or a welded dished end / flat welded end at the bottom depending on process/customer’s requirements. The vessel is divided into two compartments by means of a perforated plate, provided with suitable filter cloth or porous tiles. An agitator of unique design is provided inside the vessel. This agitator can perform multifarious activities by manipulating its movement of vertical and rotational directions simultaneously, by push buttons switches/PLC. The filter is capable of operating under either pressure or vacuum or a combination of both.

    Operation

    Slurry is feed into the top compartment from where filtrate passes into the lower chamber en route to receiver. Solids are deposited on the filtering media in the top compartment and take the shape of cake of a uniform thickness. The agitator pushes the solid content in the slurry upwards by keeping it under suspension till maximum possible filtrate passes through the filter bed. This reduces time and increase productivity. It then seals the cracks in the cake, which develop after most of the filtrate has passed through, by smoothening the top surface of the cake. It also squeezes out some of the moisture in the cake by slightly pressing the cake uniformly with the help of specially designed blades. After the initial solvent/mother liquor has been separated, sometimes it is necessary to wash the cake. The Agitator has been designed in such a way that after adding wash liquor on the cake, the entire cake can be re-slurred and agitated, so that all the particles forming the cake can be exposed to wash liquor and be thoroughly washed. This improves the quality of the finished products. After washing and removal of wash liquor, the cake can be discharged through a quick opening side discharge door, by rotating and lowering agitator in the discharge direction. No manual handling is required.

    Advantages of Agitated Nutsche Filter

    The filter works as a completely closed system, eliminating any possibility of atmospheric pollution from toxic fumes / obnoxious smell generated from the slurry.
    1. Very high solvent recovery is possible.
    2. Explosion or fire hazard on account of spillage is eliminated.
    3. Manpower saving. All operations can be handled by a single unskilled person with little training.
    4. Very effective washing of cake due to re-slurring resulting in thorough particulate washing and reduces number of washes, and volume of wash liquor.
    5. Possibility of doing reaction filtration, washing and distillation in the same equipment. In some cases drying operation can also be carried out in the same equipment. Heat transfer surface can be provided by means of a jacket or limpet coils on the vessel walls. Indirect heating can be provided on the filter base and agitator.
    6. Available in special construction for sterile applications with high standard of particulate purity.

    Materials of Constructions:

    1. Carbon Steel
    2. Stainless Steel
    3. Nickel/Nickel Alloys
    4. Super Stainless Steels
    5. Hastelloy.

    Note :

    Sizing, selection of configuration, M.O.C’s, methodology of filtration etc. are based on material characteristics. Magtech Process Equipments Pvt. Ltd. has vast experience and Pilot Plant facilities. These are used for proper selection and design based on specific application requirements. Suitable linings of FRP / FRV, Rubber, Acid-resistant bricks and tiles or corrosion-resistant fluorocarbons can be offered.

    Configurations Available:

    1.) Pressure-Cum-Vacuum filter. 2.) Bottom detachable arrangement for ease of cleaning/ cloth fixing. 3.) Electromechanical drive and Hydraulic Shaft lift. 4.) Hydraulic discharge valve. 6.) GMP Models for clean room applications. 7.) Filter-Cum- Dryer for drying of wet cakes. 8.) Different stirrer designs based on physical characteristics of materials.

    Model No. MTP PILOT MTP 1000 MTP 2000 MTP 3000 MTP 4000 MTP 5000 MTP 6000 MTP 7000
    Working Cap. (ltrs.) 500 1000 2000 3000 4000 5000 6000 7000
    Filtrring Area(Sq.m.) 0.68 1.02 1.82 2.7 500 3.2 4.7 5.7
    RPM 20 20 20 15 12 12 12 10
    Motaor H.P. Rotary 5 5 7.5 7.5 10 12.5 15 15
    Vertical 1 1 1 1 1 1 1 1
    Internal dia.(mm) 1000 1200 1600 2000 2200 2600 2800 3000
    Over Height(mm.) 3400 3600 3800 4100 4300 4500 4800 5000

    The above dimensions are only indicative. Final choice will depend upon the operating parameters required based on material characteristics. Sizes above 20000 liters can also be offered.

Magtech Process Equipments Pvt. Ltd.

Plot No. 320-321, Ecotech 1 Extension, Greater
Noida, Gautam Budh Nagar-201306 ( U. P.) India.



Magtech Process Equipments Pvt. Ltd
Technocrats in Filtration & Drying System
For Api,Pharameaceutical & Chemical industry
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