About Vacuum Shelf Tray Dryer
VACUUM SHELF TRAY DRYER
High precision low temperature vacuum Drying & Mixing Process Technology
Application & Process :
- The Vacuum Shelf Tray Dryers are used to het and dry material under the state of vacuum is called vacuum drying and where difficulties in drying materials due to high toxic contents, hygroscopic in nature, heat sensitive. It is widely used in the pharmaceutical, Herbal, chemical & foodstuff.
- The Vacuum Shelf Dryer is basically a tray dryer working under vacuum conditions. Its use vacuum to pump air and humidity out from the closed heat chamber due to vacuum making the chamber on the vacuum state thus increased drying rate greatly and saved energy. The boiling point of the material to be brought down for drying and the entire system is in closed loops so, no contamination occurs. The evaporation's evolved during the drying process is cooled down through a connected condenser and collected in receiver. The vacuum shelf dryer when combined with solvent extraction system, ensures that almost all of evaporating vapors is recovered and condensed in to a receiver. Vacuum shelf dryer is closed chamber with heavy structure with air lock doors, Jacketed and insulated body. Inside chamber there are shelves for resting tray. Shelves are manufactured in hollow
Salient Features :
- Design is cGMP with product contact parts AISI 316.
- Vacuumize shelves drying on low temperature system for high toxic. Hygroscopic & heat sensitive materials.
- Vacuumize closed system can be with condenser, Receiver for solvent recovery.
- Very low value of final moisture even at low drying temperatures.
- Safety feature: Vacuum relief valve, Safety pressure relief valve, Temperature Controller & Overload protection.
- Option for heating media can be steam/ hot water / hot tharmic fluid.
Model
PVTD-6
PVTD -12
PVTD- 24
Chamber inner size in mm
External size in mm
Layer of Backing shelf
6
6
6
Size of Backing Tray in mm
Power Kw
400 x 800 x 32 (H)
No. of Backing Tray
No. of Dummy shelf
Please contact us for more details.
No. of Tray per shelf
Permitted Pressure inside Pipe & Shelf- Kg/cm²
Temperature inside Chamber- ®C
Vacuum level Inside Chamber without load - mmH
Consistent and Gentle Drying PerformanceThis Vacuum Shelf Tray Dryer offers precise temperature control (2C across trays) and superior drying at pressures as low as 1 mm Hg. Its design safeguards heat-sensitive materials from degradation, ensuring reliable drying results batch after batch.
Robust Construction and HygieneFabricated from premium stainless steel (SS 304/316) with a mirror or matt surface finish, the unit is resistant to corrosion and easy to cleanespecially with the CIP (Clean-in-Place) option. The construction meets cGMP and CE standards, supporting rigorous industry compliance.
User-Friendly Operation and AutomationFeaturing automatic or semi-automatic operation and PLC/relay-based control, this vacuum dryer simplifies batch processing. A digital display provides real-time monitoring of temperature and pressure, while the hinged door mechanism and low-maintenance design enhance everyday usability.
FAQs of Vacuum Shelf Tray Dryer:
Q: How does the Vacuum Shelf Tray Dryer ensure uniform drying of materials?
A: The dryer uses precisely controlled shelf heating (hot water, steam, or oil) and maintains a temperature uniformity of 2C across all trays. This, combined with adjustable chamber pressure down to 1 mm Hg, ensures even and efficient drying throughout each batch.
Q: What is the primary benefit of using a vacuum shelf tray dryer for heat-sensitive substances?
A: Drying under vacuum allows for moisture removal at lower temperatures, preventing thermal degradation of heat-sensitive or hygroscopic materials. This results in higher product quality and minimized loss of active ingredients.
Q: When should I opt for the CIP (Clean-in-Place) cleaning system?
A: If your process involves frequent product changes, stringent hygiene requirements, or materials that can be hazardous to handle manually, the optional CIP system enables efficient and contactless chamber and tray cleaning, minimizing downtime and labor.
Q: Where is this vacuum dryer most commonly used?
A: This tray dryer is widely used in pharmaceuticals, chemical processing, biotechnology, food, and herbal industriesanywhere that gentle yet efficient drying of sensitive materials is required.
Q: What materials are used in the construction of the vacuum dryer?
A: The chamber, trays, and structural components are constructed from durable stainless steel (SS 304/316), with options for mirror or matt finish, ensuring corrosion resistance, long operational life, and easy cleaning.
Q: How is safety ensured during the drying process?
A: Safety is managed through features like over-temperature protection, vacuum interlock, robust insulation (mineral wool/glasswool), and digital monitoring. These protect both operators and products by preventing overheating and unauthorized chamber access during operation.
Q: What are the installation and operational requirements for this dryer?
A: The dryer is floor-mounted, operates on a three-phase 415 V, 50 Hz electric power source, and requires an external vacuum pump suited to chamber volume. The system allows for fixed or wheeled mobility and manual tray loading during each batch process.