PET Crystallization Dehumidifier ，PET  Dehumidifier 

### **PET Crystallization Dehumidifier: Technical Overview**  

**—Precision Equipment for Enhanced PET Processing Stability**  

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#### **Core Technology**  

1. **Simultaneous Crystallization & Dehumidification**  

  - **Thermal Profiling**: Programmable 3-stage heating (80°C → 140°C → 100°C) optimizes crystallinity (25–50%) while suppressing hydrolysis.  

  - **Ultra-Dry Airflow**: Achieves **-50°C dew point** via twin-tower molecular sieves, ensuring residual moisture **≤30 ppm** (ISO 15512 compliant).  

2. **Intelligent Control System**  

  - Real-time monitoring of:  

    - Crystallization kinetics (via in-line DSC simulation)  

    - Pellet surface/bulk moisture differential  

    - Energy consumption per kg output  

  - Auto-adjusts airflow (0.2–1.0 m/s) and agitation frequency (5–30 Hz).  

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#### **System Configuration**  

| Module | Key Components | Performance |  

|--------|----------------|-------------|  

| **Preheater** | Corrosion-resistant screw conveyor | Pre-dries PET to ≤0.1% moisture |  

| **Crystallizer** | Multi-zone fluidized bed (316L SS) | ±1°C uniformity across bed |  

| **Dehumidifier** | Hybrid desiccant (3A+13X) | 98% adsorption efficiency |  

| **Control Unit** | Siemens PLC + IoT dashboard | 50+ recipe presets |  

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#### **Technical Specifications**  

| Parameter | Value |  

|-----------|-------|  

| Capacity | 1–15 tons/hour |  

| Energy Use | 0.16–0.24 kWh/kg |  

| Residual Oxygen | <200 ppm (N? inertization) |  

| Noise Level | ≤68 dB(A) |  

| Pellet Breakage | <0.03% |  

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#### **Innovation Highlights**  

- **Anti-Static Airflow**: Reduces fines generation by 65% through ionized nozzles.  

- **Self-Regenerative Adsorption**: 15-minute cycle time with 85% heat recovery.  

- **Dual-Mode Operation**: Switch between virgin PET and rPET (recycled) processing.  

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#### **Industrial Applications**  

- **Bottle Grade Resin**: Maintains IV drop ≤0.03 dl/g for carbonated drink packaging.  

- **Film Production**: Achieves ≤5 defects/100m2 in BOPET films.  

- **Fiber Spinning**: Reduces broken filaments to <2% in textile-grade PET.  

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#### **Certifications & Compliance**  

- **CE Mark** (EN 61439-1)  

- **FDA 21 CFR §177.1630** (food safety)  

- **ISO 14064** (carbon footprint verified)  

#### **Operational Benefits**  

- **30% Faster Cycle Times** vs. conventional dryers  

- **18% Energy Savings** through regenerative heat exchange  

- **99.9% Batch Consistency** in moisture/crystallinity  

**Case Study**:  

A Middle Eastern PET preform plant achieved:  

- 40% reduction in drying energy costs ($12.5k/month saved)  

- 0% moisture-related defects in 12 consecutive months  

- Full ROI within 11 months  

Deployed in 100+ global PET facilities, this system guarantees ≤50 ppm moisture for 99.95% of production batches. (Word count: 298)