Applications
Double-cone vacuum dryers are used in:
- The pharmaceutical industry (APIs, proteins, antibiotics, excipients)
- Chemical industry (catalysts, polymers, fine chemicals)
- Biotechnology (enzymes, peptides, bioactive substances)
- Food industry (additives, flavorings, supplements)
- Products containing solvents or moist crystalline structures
Product overview
Double-cone vacuum dryer – rotating batch drying system
The double-cone vacuum dryer consists of a rotating, double-conical vessel that is fully heated and insulated. During the process, the product is placed under vacuum and slowly rotated, resulting in continuous renewal of the product’s contact with the heated wall.
Principle of operation:
- The product is placed under vacuum (< 1 mbar)
- Heating via a jacket (e.g., steam or thermal oil)
- Slow rotation ensures tumbling and uniform drying
- Vapor is vented and, if necessary, condensed
This results in uniform drying without hot spots or product degradation.
Key features
- Low-temperature vacuum drying (< 1 mbar)
- Temperature range up to approx. 200°C
- Capacity: approx. 30 – 30,000 liters
- Batch process with high reproducibility
- Fully enclosed system (suitable for containment)
- Low energy consumption due to efficient heat transfer
- Simple mechanical design → low maintenance
Processing options
- Drying of crystalline, amorphous, and hygroscopic products
- Removal and recovery of solvents
- Mixing and drying in a single system
- Gentle handling of fragile products
- Breaking up clumps with choppers (optional)
Technical specifications (approximate)
- Capacity: 30 – 30,000 liters
- Vacuum level: < 1 mbar
- Temperature: up to approx. 200°C
- Operation: batch
- Design: double-conical, rotating
- Material: stainless steel (e.g., 316L), special alloys
Options:
- CIP/SIP systems
- ATEX-compliant design
- Solvent condensation and recovery
- Automatic filling and emptying
- Cleanroom integration
- Electropolished surfaces (GMP)
Typical applications
- Drying of pharmaceutical intermediates and APIs
- Removal of solvents from chemical products
- Drying of food ingredients and bioactive substances
- Products with fragile structures or high value
- Batch processes with strict quality and hygiene requirements
Why choose Hecht Technology?
Hecht Technology combines process technology with expertise in containment and safe product handling. In combination with double-cone vacuum dryers, we offer:
- Engineering and process optimization
- Integration into existing lines (feeding, dosing, discharge)
- Dust-free and safe handling
- Support for GMP, ATEX, and validation
Would you like more information?
Would you like to know if a double-cone vacuum dryer is suitable for your process? Contact our specialists for personalized advice.