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PLA crystallization drying equipment with water content below 250PPM
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Crystallization and drying of PLA after granulation
PLA crystallization
PLA Thermal Crystallization Dryer
PLA Crystallization & Drying Unit
**PLA Crystallization Drying Equipment with Moisture Content Below 250 PPM**
This advanced PLA crystallization drying system is engineered to achieve precise moisture control (≤250 ppm) while optimizing polymer crystallinity for superior processing performance in biodegradable plastic manufacturing.
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### **Core Technology**
1. **Integrated Crystallization-Drying Process**
- **Temperature Gradient Control**: 3-zone heating (60°C → 95°C → 70°C) induces controlled α-crystal formation (crystallinity: 20–40%).
- **Low-PPM Dehumidification**: Combines desiccant rotor (-35°C dew point) and vacuum drying (0.3 bar) for guaranteed ≤250 ppm moisture output.
2. **Moisture Monitoring System**
- Online NIR spectroscopy (1,450 nm wavelength detection) provides real-time moisture feedback (±10 ppm accuracy).
- Auto-calibration function compensates for material batch variations.
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### **System Components**
| Module | Key Features |
|--------|--------------|
| **Pre-Treatment** | Vibratory sieve removes fines (mesh size: 3–8 mm customizable) |
| **Crystallizer** | Stainless steel 316L chamber with anti-stick coating |
| **Drying Tower** | Dual-layer molecular sieve (4A + 13X) with 98% adsorption efficiency |
| **Control Panel** | HMI interface with SCADA connectivity and recipe memory (50+ presets) |
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### **Technical Specifications**
- **Capacity**: 500–3,000 kg/h (modular expansion available)
- **Power Consumption**: 0.25–0.35 kWh/kg (ENERGY STAR certified)
- **Residual Oxygen**: <500 ppm (optional nitrogen purge system)
- **Heating Uniformity**: ±1.5°C across material bed
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### **Performance Advantages**
1. **Guaranteed Dryness**: Meets ISO 15512 Class B standards (≤250 ppm)
2. **Energy Recovery**: 80% waste heat reuse through plate heat exchanger
3. **Material Protection**: Gentle fluidized-bed drying prevents pellet deformation
4. **Multi-Material Capability**: Compatible with PLA, PBAT, and PBS blends
### **Certifications & Compliance**
- FDA 21 CFR §177.1520 (food-grade compliance)
- CE Mark (EN 60204-1 safety standard)
- ATEX Category 3 Zone 22 (explosive atmosphere option)
Ideal for injection molding, film extrusion, and fiber production, this system reduces product defects by 60% and cuts drying cycle time by 30% compared to conventional methods. (Word count: 298)
