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Vacuum Harrow Dryer

The ZPG vacuum harrow dryer is mainly used for drying pasty materials which are readily exploded and oxidized. The boiling point of solvent is reduced under vacuum condition. Meanwhile, isolated from air, materials won’t be oxidized or deteriorate during drying process.

Heat is transferred to material container via heating medium as hot water or hot oil. In the meantime, materials are agitated by harrow shaft for uniform heating. After drying is completed, emptying valve at the container bottom can be open, and materials will be discharged out of the vacuum harrow dryer under the agitation of harrow shaft.

1. This vacuum rotary dryer adopts large-area end over end heating method, making for high heat efficiency.
2. Water evaporation intensity is extremely high. Usually, it can reach up to 10-15kg/m2·h.
3. The particle entrainment in solvent vapor will be filtered by bag filter, thus leaving no pollution and allowing for high reclamation rate.
4. With specialized agitation system, this vacuum harrow dryer is competent in pulpy and pasty materials drying.

Technical Parameters
Model ZPG-500 ZPG-750 ZPG-1000 ZPG-1500 ZPG-2000 ZPG-3000 ZPG-5000
Working volume (L ) 300 450 600 900 1200 1800 3000
Internal container size (mm) φ600 ×1500 φ800 ×1500 φ800 ×2000 φ1000 ×2000 φ1000 ×2600 φ1200 ×2600 φ1400 ×3400
Agitating speed (rpm) 5-25 5-12 5
Power (KW) 4 5.5 5.5 7.5 11 15 22
Designed jacket pressure (MPa) ≤0.3
Internal vessel pressure (MPa ) -0.09 to -0.096
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