Pipe Drying System for Plastic Recycling
In plastic recycling, effective drying is critical to pellet quality. Our Pipe Drying System uses continuous high-velocity hot air conveyance to rapidly reduce flake moisture below 3% for optimal pelletizing and storage.
- Built with corrosion-resistant 304 stainless steel for long operational life.
- Closed pneumatic flash-drying reduces moisture to 1–3% with minimal energy loss.
- Direct coupling with centrifugal dewaterers and cyclone storage silos.
Pipe Drying System In Detail
High-grade stainless steel heating tubes and continuous pneumatic conveyance layout.
Why Effective Drying is Non-Negotiable
Excess moisture in recycled plastics leads to poor-quality end products, including weakened structural integrity, surface imperfections, and processing difficulties.
Challenge: Moisture Contamination
Lingering moisture after washing causes defects, voids, reduces tensile strength, and can cause screw surging or damage extrusion barrels.
Solution: High-Efficiency Flash Evaporation
Our system provides a reliable, high-efficiency pneumatic solution to reduce flake moisture content below 3% before extrusion or bagging.
Key Features of Our Pipe Drying System
Engineered for thermal efficiency, high throughput, and seamless in-line integration.
- Robust 304 Stainless Steel
Built with 2mm thick, corrosion-resistant 304 stainless steel for long-term performance in demanding wash plant environments.
- Adjustable Self-Heating
A powerful 36–70 kW heating range allows precise temperature control tailored to different types of plastic flakes.
- Efficient Moisture Reduction
Combines high-volume thermal heating with rapid pneumatic transport for thorough drying to below 3% moisture.
- Optimized Material Handling
An integrated blower ensures plastic flakes are evenly dispersed and pneumatically conveyed to the next stage.
Technical Specifications
Key engineering parameters. All specifications can be customized to match your material type, throughput, and facility layout.
| Parameter | Specification |
|---|---|
| Heating Power | 36–70 kW (adjustable) |
| Outlet Moisture Content | < 5% (1–2% achievable depending on material) |
| Pipe Material | 304 stainless steel, 2 mm wall thickness |
| Compatible Materials | PET flakes, HDPE, LDPE, PP granules and film |
| Configuration | Customizable pipe length, diameter, and heating stages |
| Integration | Downstream of centrifugal dewatering; upstream of extrusion/pelletizing |
How It Works: A Simple & Effective Process
Our system uses a combination of heated air and powerful conveyance to efficiently remove moisture from plastic materials in a continuous flow.
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Step 1Material Feeding
Washed plastic flakes or regrind are introduced into the pipe system inlet via an airtight rotary airlock valve.
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Step 2High-Speed Conveyance
A powerful centrifugal high-pressure blower propels the material through the stainless steel pipeline at high velocity.
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Step 3Intense Heating & Evaporation
As material travels through the tube coils, thermal air contact instantly flash-evaporates residual surface moisture.
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Step 4Dried Material Discharge
A cyclone separator drops dry flakes into storage silos or big-bag stations while humid air vents through the top.
Pipe Dryer vs. Centrifugal Dewatering Machine
Both machines remove moisture, but they serve complementary stages of the plastic washing line.
| Feature | Pipe Drying System | Centrifugal Dewatering Machine |
|---|---|---|
| Drying Method | Thermal (hot air evaporation) | Mechanical (centrifugal force) |
| Moisture Removal | Residual moisture (surface and internal) | Bulk surface water only |
| Final Moisture Level | Below 5% (as low as 1–2%) | Typically 10–20% remaining |
| Suitable for Soft Film | Yes | Yes (with squeeze press version) |
| Suitable for Rigid Flakes | Yes | Yes |
| Position in Line | After centrifugal dewatering | Before pipe or thermal drying |
| Ready for Extrusion? | Yes (direct feed) | Requires further drying step |
Versatile Applications in Plastic Recycling
Pneumatic flash drying suited for multiple flake, film, and regrind streams.
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Post-Wash Drying
Removes residual wash water immediately following centrifugal dewatering units.
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Pre-Extrusion Drying
Conditions flakes to under 3% moisture for direct infeed into pelletizing extruders.
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Granule & Flake Drying
Ideal for PET bottle flakes, HDPE bottle regrind, and PP battery case regrinds.
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Material Quality Enhancement
Eliminates steam formation, bubble voids, and yellowing in downstream extrusion.
Warranty & Installation
We stand behind our products with a solid warranty and comprehensive support.
1-Year Limited Warranty
All our recycling machinery comes with a limited warranty on core components, ensuring peace of mind with your purchase.
Expert Installation Support
We offer installation packages where our engineers can travel to your facility to guide you through setup and integration.
The system is highly effective for a wide range of rigid and soft plastics, including washed PET flakes, HDPE, LDPE, and PP materials.
Our pipe drying system is designed to consistently reduce moisture content to below 5%, with many applications achieving levels as low as 1–2%, depending on the material and initial moisture.
Yes. The length of the pipeline, diameter, and heating power can be customized to fit your specific throughput requirements and available space.
Yes. The pipe drying system is designed to connect directly downstream of a centrifugal dewatering machine. We provide interface drawings and can adapt inlet/outlet diameters to match your existing conveyance and washing equipment.
Standard lead time is approximately 25–35 days after order confirmation. We offer remote commissioning guidance as standard, and on-site installation support is available depending on project scope. Contact us to discuss your requirements.
Request a Quote for Pipe Drying System
Share your plastic flake type, initial moisture level, and target throughput. Our engineers will configure the heating stages and pipe layout for your facility.
