Nutsche Filter Dryers

Pope Nutsche Filter Dryers (also known as ANFD or Agitated Nutsche Filter Dryers) are known and used worldwide for critical high-purity separations of liquids and solids.

Nutsche Filter Dryer Design Considerations

There are many different applications, process requirements and preferences to consider for filtration and drying equipment. Pope’s applications professionals are on hand to assist clients with specification and quotation of optimized Nutsche filter dryers.

Nutsche Overview Brochure

Pope’s Custom Nutsche Design Considerations

Larger custom Nutsche filter dryers are available in volumes including 10, 20, 30, 40, 50, 100, 200, and up to 1000 liters, plus any special volumes in between. “Typical” units are offered providing a similar feature set as the Pope Benchtop series, but can be customized with a broad range of unique options. 316L stainless steel construction is standard, other alloys, coatings and special finishes are available. ASME certification is standard, CE/PED and others also available.

The starting point for this is our Nutsche Application Questionnaire. Sizing of units typically depends on the total slurry volume, the quantity of expected filter cake; Pope’s Nutsche Cake Depth Volume Chart is utilized in this determination. Other design considerations include:

Vessel Flanges

Sanitary clamp type flanges can be utilized on up to 10” diameter vessels. The lower flange is a special variation that allows for holding and sealing a variety of filter screens and fabrics. Upper removable lids and flanges are also available. Beyond 10” diameters, heavy duty flanges with bolts or clamps are utilized.


The most basic vessel geometry is a single lower flange only. With this design, the entire body is raised up, or the bottom end is lowered from the body to harvest the filter cake. Another option is to also have a removable top head. This provides the user with two means of access and harvesting, removing either the top or the bottom head, or both. Some users prefer to have an additional flange for vessel break-apart a short distance or midway up from the bottom filter flange. This allows teh filter cake to be contained when the upper section of the vessel is removed, and convenient cake harvesting without spillage. There are other variations including “removable basket” design. See photos for examples.


Nutsche vessels normally come with legs with locking castors. Depending on geometry, (see above) the number and location of legs may vary. With vessels larger than 8” diameter, the vessel sections can become heavy and inconvenient for manual movement and lifts are typically provided for safe raising/lowering and movement across rooms. Variations can include self-contained lifts, platforms, and specialized frame for manual or automated rotation of vessel. See photos for examples.


In many cases, though not all, some means of agitation is required or preferred. Pope’s Series 700, 800 or 900 mixers are offered for conventional type stirring of slurry before or during filtration or after reslurrying. Raising/Lowering cake churning and smoothing agitators are also offered. These provide greater efficiency in breaking up clumps and shortening drying time. Pope’s cake agitators can also be utilized for removing the filter cake from the Nutsche. An “S” shaped blade can dig into the cake, smooth it, and discharge through a side valve.


Vessel jacket heating is offered to help in drying the filter cake. Heated dry air or nitrogen can also be admitted at a fixed rate. These, in conjunction with vacuum and cake agitators optimize drying efficiency. Electric heaters are available as an alternative to liquid jackets on Pope’s smaller units.


Multi layers stainless steel filter screens are available from 1 to 200 micron pore size. 20 micron filters are “standard”, covering a wide range of applications. In addition, polypropylene cloth and other special type membrane filters can be used. Pope’s designs provide customers with a choice and changing from one type to another without any further Nutsche unit modification.

Other Features

Many options are offered including sight glasses, valving, pressure and temperature indication/control, other sensors, sampling ports, spray head, and side discharge harvesting ports. Special skid mounted systems combining liquid and vacuum pumps, reactors, control systems and other turnkey features are also available. Pope also works with companies focused on containment for operator protection, such as with HPAPI’s, or product protection and can offer both flexible and rigid isolation solutions.

Turnkey Processing Equipment

Pope offers turnkey processing equipment custom-built for your unique application.

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View Nutsche Filter Dryer Gallery

View some of our standard benchtop models, custom designs and turnkey Nustsche systems.

Pope Turnkey Reactor and Nutsche System

Simultaneously running a crystallizing reactor and a Nutsche filter dryer provides efficiency along with proper design for the greatest purity, yield, and product value in your application.

Pope Turnkey Nutsche Reactor System
One of Pope’s many options for stock agitated Nutsche filter dryers.
Pope 30 Liter Nutsche specially designed for polymer precipitation.
Pope 75 Liter Nutsche
Pope 350 Liter Nutsche
Pope Basket-Style Nutsche Filter Dryers
Pope 40 Liter Nutsche Filter Dryer
Pope 30 Liter Nutsche Filter Dryer
Pope 60 Liter Rotating Nutsche Filter Dryer
Pope Side Nutsche Filter Dryer
Pope Rotating Nutsche Filter Dryer
Pope Basket Nutsche Mixer
Rotating Nutsche Filter Dryer
Pope Special 5 Liter Nutsche Filter Dryer
Pope 120L Nutsche
225-Liter Nutsche Filter-Dryer
Pope 55 Gallon Nutsche Filter
35 Liter Custom Nutsche Filter Dryer used in canna purification
Pope 20 Liter Agitated Nutsche Filter Dryer
Pope 20 Liter Agitated Nutsche Filter Dryer, Open.
Pope 10 Liter Nutsche Filter
Pope Standard X Liter Benchtop Nutsche Filter Dryer
Pope 25 Liter Agitated Nutsche Filter Dryer with Product Isolation
Pope 200 Liter Nutsche Filter Dryer
Pope 25 Liter Agitated Nutsche Filter Dryer
Pope 1 Liter Agitated Nutsche Filter Dryer
Pope 36 inch diameter Nutsche Filter
Pope 5 Gallon Nutsche Filter Dryer
Pope 3 Liter Benchtop Nutsche
Rotatable 100-Liter Pharmaceutical Agitated Nutsche Filter-Dryer