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PET crystallization drying device
PET crystallization drying device，PET crystallization dryer，PET Crystallization Stirring and Drying System
### **PET Crystallization Drying Device: Technical Specification & Innovation**
**—Advanced Solution for High-Performance Polyester Processing** 
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#### **Core Technology**
1. **Dual-Stage Crystallization**
- **Pre-Crystallization**: Utilizes **fluidized-bed technology** (140–160°C) to initiate crystal nucleation, raising crystallinity from 5% (amorphous) to 25–30%.
- **Post-Crystallization**: Infrared-assisted heating (160–200°C) optimizes spherulite growth, achieving 35–50% crystallinity (±1.5% uniformity).
2. **Ultra-Low Moisture Control**
- **Triple Desiccant Towers**: Molecular sieves (3A/4A/13X hybrid) maintain a dew point of **-50°C**, reducing moisture to **≤30 ppm** (ISO 15512 Standard).
- **Closed-Loop Monitoring**: Real-time NIR spectroscopy (1,550 nm wavelength) adjusts drying parameters dynamically.
3. **Energy-Saving Design**
- Heat recovery efficiency ≥80% via plate heat exchangers.
- Power consumption: **0.15–0.22 kWh/kg** (30% lower than conventional rotary dryers).
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#### **System Configuration**
| Module | Key Components | Function |
|--------|----------------|----------|
| **Feeding** | Anti-bridging screw feeder | Preheats PET flakes to 50°C |
| **Crystallization** | Multi-zone vibrating fluidized bed | Prevents agglomeration |
| **Drying** | Adsorption towers + vacuum chamber | Achieves ≤30 ppm moisture |
| **Control** | Siemens PLC + IoT-enabled HMI | Recipe management & remote diagnostics |
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#### **Technical Parameters**
| Parameter | Value |
|-----------|-------|
| Capacity | 0.5–12 tons/hour |
| Temperature Range | 50–220°C (±1°C) |
| Residual Oxygen | <300 ppm (optional nitrogen purge) |
| Noise Level | ≤75 dB(A) |
| Pellet Damage Rate | <0.1% |
---
#### **Innovative Features**
- **Anti-Static System**: Ionized airflow reduces fines generation by 60%.
- **Self-Cleaning Mechanism**: Automatic blowback for sieve plates (interval: 15–60 min).
- **Hybrid Drying Modes**: Switchable between vacuum, desiccant, and microwave-assisted drying.
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#### **Industrial Applications**
1. **Bottle Preform Molding**: Ensures IV drop <0.02 dl/g during processing.
2. **Film Production**: Reduces fish eyes to <5 pcs/m2.
3. **Recycled PET (rPET)**: Processes post-consumer flakes with ≤0.3% moisture.
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#### **Certifications & Compliance**
- CE Mark (EN 60204-1 safety standard)
- FDA 21 CFR §177.1630 (food-grade PET compliance)
- ISO 9001/14001 certified production
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**Operational Benefits**:
- Increases production line speed by 25% through optimized crystallinity.
- Reduces energy costs by $18/ton compared to traditional dryers.
- Extends mold lifespan by 40% via consistent material flow.
Deployed in 50+ global PET plants, this system guarantees ≤50 ppm moisture for 99.9% of batches, with ROI achievable within 12–18 months. (Word count: 298)
