Drying Technology

Gentle drying under vacuum

Among the thermal processes, vacuum drying has proven particularly effective in many sectors. The purpose of this process is to dry gently a high-grade product containing water or solvents without modifying the product characteristics.

During drying under vacuum, the total pressure in the drying oven is lowered so that the water or solvent vaporizes even at low temperatures.

The drying process is optimized by selectively controlling the heat supply and pressure.

A vacuum drying system basically consists of a drying oven with a heating system and a vacuum pump assembly, designed for a specific drying process with the associated control.

Phase diagram of water

1. Condensation
2. Melting
3. Sublimation
4. Triple point (0.01 °C/6.09 mbar)

Drying systems / Isolators

VSD

• Vacuum drying oven
• Drying principle: Vacuum, heat
• Temperature: max. 200 °C
• Shelf area: 1 to 20 m²
• Heating: Hot water, thermal oil
• Materials: High-grade stainless steels, special materials such as Hastelloy, Inconel and titanium
• Surfaces: Ground and polished

VSDI

• Vacuum drying oven with isolator
• Drying principle: Vacuum, heat
• Temperature: max. 200 °C
• Shelf area: 0.2 to 2 m²
• Heating: Hot water, thermal oil
• Materials: High-grade stainless steels, special materials such as Hastelloy, Inconel and titanium
• Surfaces: Ground and polished

VSDIN

• Vacuum drying oven with isolator and pressure nutsch
• Drying principle: Vacuum, heat
• Temperature: max. 200 °C
• Shelf area: 0.2 to 2 m²
• Heating: Hot water, thermal oil
• Materials: High-grade stainless steels, special materials such as Hastelloy, Inconel and titanium
• Surfaces: Ground and polished

VSD-e

• Vacuum drying oven
• Drying principle: Vacuum, heat
• Temperature: max. 200 °C
• Shelf area: 0.18 m²
• Heating: Electric
• Materials: High-grade stainless steels, special materials such as Hastelloy, Inconel and titanium
• Surfaces: Ground and polished

VT

• Vacuum drying oven
• Drying principle: Vacuum, heat
• Temperature: max. 200 °C
• Shelf area: 1 to 20 m²
• Heating: Hot water, thermal oil, electric
• Materials: High-grade stainless steels
• Surfaces: Ground and polished

UT

• Circulating air oven
• Drying principle: Circulating air, heat
• Temperature: max. 250 °C
• Interior volume: 0.8 to 12 m³
• Heating: Hot water, thermal oil, electric, steam
• Materials: High-grade stainless steels
• Surfaces: Ground and polished, mill finish

VUT

• Vacuum circulating air oven
• Drying principle: Vacuum, circulating air, heat
• Temperature: max. 200 °C
• Interior volume: On request
• Heating: Hot water, thermal oil, electric
• Materials: High-grade stainless steels
• Surfaces: Ground and polished, mill finish

RTSD

• Rotary vacuum dryer
• Drying principle: Vacuum, heat, rotation
• Temperature: max. 200 °C
• Interior volume: 125, 250, 500, 1,000 l
• Heating: Hot water, thermal oil
• Materials: High-grade stainless steels, special materials such as Hastelloy, Inconel and titanium
• Surfaces: Ground and polished

A suitable solution for each customer's requirements

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