ZPG-Vacuum Rake Dryer
Rake Agitator Vacuum Conduction Dryer
The Rake Dryer comes with a large-area jacket heating system and a rake agitator that increases the heating surface area, making it easier to move and heat materials. It can operate at low temperatures under vacuum, making it perfect for handling flammable, organic-solvent and heat-sensitive materials.
- Input
- Liquids, Slurries, Pastes, Mashes
- Output
- Powder with 3%–10% moisture content
- Temperature
- Heat source temperature range of 50°C to 200°C
- Additional Features
- Stirring, Mild Crushing
A Vacuum Rake Dryer for Agitated Low-Temperature Drying
SINOTHERMO's vacuum rake dryer — an agitated, jacket-heated conduction dryer also known as a rake or harrow vacuum dryer — dries liquids, slurries, pastes and mashes into powder inside a sealed, vacuum-heated shell. A slow rake agitator constantly turns the material against the heated jacket, so drying stays fast and even at low temperature, safe for solvent-laden and heat-sensitive products.
- A rotating rake continually lifts and turns material against the heated wall, renewing the contact surface for fast, uniform drying and preventing crusting or hot spots.
- A large-area heating jacket conducts steam, hot water or thermal-oil heat efficiently into the batch at a controlled 50–200°C source temperature.
- Operating under vacuum lowers the evaporation point, protecting heat-sensitive products and enabling recovery of organic solvents from the feed.
- The enclosed, low-oxygen vacuum environment safely dries flammable and organic-solvent-wet materials that cannot be dried in air.
- The rake's stirring and gentle crushing break up agglomerates as they dry, delivering free-flowing powder at 3–10% moisture without a separate mill.
Model
| Model | ZPG-500 | ZPG-750 | ZPG-1000 | ZPG-1500 | ZPG-2000 | ZPG-3000 | ZPG-5000 | ZPG-8000 | ZPG-10000 |
|---|---|---|---|---|---|---|---|---|---|
| Working Volume (L) | 300 | 450 | 600 | 900 | 1200 | 1800 | 3000 | 4800 | 6000 |
| Inner Dimensions (mm) | Φ600x1500 | Φ800x1500 | Φ800x2000 | Φ1000x2000 | Φ1000x2600 | Φ1200x2600 | Φ1400x3400 | Φ1600x4000 | 1800x4000 |
| Agitation Speed (rpm) | 5-25 | 5-25 | 5-25 | 5-15 | 5-15 | 5-10 | 5-8 | 4-6 | 3-6 |
| Power (kw) | 5.5 | 5.5 | 7.5 | 11 | 15 | 22 | 30 | 45 | 55 |
| Jacket Design Pressure (MPa) | 00.8 | 00.8 | 00.8 | 00.8 | 00.8 | 00.8 | 00.8 | 00.8 | 00.8 |
| Internal Pressure (MPa) | -0.095+0.1 | -0.095+0.1 | -0.095+0.1 | -0.095+0.1 | -0.095+0.1 | -0.095+0.1 | -0.095+0.1 | -0.095+0.1 | -0.095+0.1 |
- Water evaporation volume depends on material characteristics and drying temperature.
- Parameters are subject to change as products are continuously updated.
Applications
Chemical
Dries chemical slurries, pastes and reaction products under vacuum while recovering organic solvents.
Pharmaceutical
Gently dries active ingredients and intermediates from solvent-wet pastes at low temperature.
Pigments & Dyes
Dries pigment and dye pastes into powder while preserving shade and particle quality.
Resins
Dries heat-sensitive resins and polymer slurries without curing or thermal damage.
Biotechnology
Low-temperature drying of bio-based mashes and fermentation products under controlled vacuum.
Food Flavors & Fragrances
Dries extracts, flavors and food concentrates gently to preserve aroma and color.
Salt Solutions
Evaporates and dries concentrated salt and inorganic solutions into dry powder.
Environment
Dries sludges and process residues to powder under vacuum for volume reduction and solvent capture.
Services
→Learn more about Services- 1Pre-Sales Testing and Experiment
- 2Professional Customization Design
- 3On-site Installation and Commissioning
- 4Training and Technical Support
- 5Full Life Circle Maintenance and After-sales
