Filter dryers

Nutsche Filter Dryers – Integrated Filtration and Drying in One Vessel

Nutsche Filter Dryers are highly efficient, enclosed systems that combine filtration, cake washing, and vacuum drying in a single unit. Designed for batch processing, they are ideal for industries requiring high purity and product containment—such as pharmaceuticals, fine chemicals, and food production.

These systems handle solid-liquid separation by charging a slurry into the vessel, filtering out the liquid under pressure or vacuum, and drying the resulting cake with controlled heat and agitation. All operations take place in a sealed environment, minimizing contamination risk and ensuring maximum product recovery.

Filtering surface: 0.07m² to 15m²
Operation capacity: 19l to 15’000l
Operation Temperatures: up to 200º C
Pressure: -1 (FV) to 10 bar
Material: Hastelloy, stainless steel

Key Benefits of Nutsche Filter Dryers

All-in-One Process
Nutsche dryers integrate multiple steps—filtration, re-slurrying, washing, and drying—into one vessel, reducing manual handling, process time, and contamination risk.

Closed, GMP-Compliant Design
The hermetically sealed vessel is pressure-rated and designed to meet cGMP and EHEDG hygienic standards. This ensures safe handling of sterile or potent materials, maximizing yield and protecting operators.

High Purity and Efficiency
Efficient discharge systems (e.g., heel-break or gas-knife technology) remove up to 99% of the dried cake. The heated jacket and variable-speed agitator provide uniform, gentle drying, shortening cycle times.

Flexible Capacities
Systems are available in a wide range of sizes—from lab and pilot models (0.2 to 1000 L) to full-scale production units with filter areas up to 15 m² and volumes over 15,000 L. This makes scale-up straightforward.

Durable Construction
Materials like 316L stainless steel, Hastelloy®, and glass-lined steel offer chemical resistance and easy cleaning. Internal surfaces can be polished to pharmaceutical-grade finishes. Systems are available with CE, ASME, FDA, ATEX, and other certifications.

Energy and Space Savings
Combining all steps in one machine reduces floor space and energy use. Optional automation, including PLC control and CIP/SIP systems, minimizes labor and ensures repeatability.

Typical Applications

Nutsche filter dryers are widely used across industries requiring high standards of purity and containment:

• Pharmaceuticals & Biotech: APIs, vitamins, peptides, and sterile intermediates
• Fine & Specialty Chemicals: Catalysts, pigments, polymers, and organic intermediates
• Food & Flavors: Natural extracts, additives, and colorants
• Chemical & Material Processing: Resins, minerals, and specialty powders
• R&D & Pilot Production: Small-scale, high-potency materials or scale-up testing

Custom Options

To fit specific process requirements, these systems can be customized with:

• Filter Media: Cloths, membranes, or sintered metal
• Agitators: Helical, flat-blade, or custom configurations
• CIP/SIP Systems: For full internal cleaning and sterilization
• Sealing & Containment: Double seals, nitrogen blanketing, and safe sampling ports
• Thermal Control: Heated or cooled jackets, condensers, and vacuum traps
• Explosion-Proof Design: ATEX/IECEx-rated components for hazardous zones

Contact Us

Looking to optimize your filtration and drying process? Contact our expert team to select the ideal Nutsche Filter Dryer for your application.