The pyrolysis process has become an effective waste-to-energy solution for both plastic and used tyres. While the core technology remains similar, the plastic pyrolysis process and the tyre pyrolysis process differ slightly in feedstock treatment and operational requirements. Understanding these differences is essential for businesses choosing the right pyrolysis machinery.

Overview of the Pyrolysis Process

Pyrolysis is a thermochemical decomposition process carried out in the absence of oxygen. It converts organic materials like plastic and tyres into useful products such as fuel oil, carbon black, and combustible gas. Beston Group, a leading manufacturer in this industry, offers advanced pyrolysis systems tailored to different waste materials. Learn more about pyrolysis machine.

Plastic Pyrolysis Process

The plastic pyrolysis process typically includes the following steps:

1. Plastic waste collection and sorting – Plastics are sorted to remove PVC and other unsuitable materials.
2. Crushing and drying – Plastics are shredded and dried to reduce moisture content.
3. Feeding into the reactor – Pre-treated plastic is fed into a pyrolysis reactor.
4. Heating – The reactor is heated to 350–450°C to initiate thermal decomposition.
5. Condensation – Volatile gases are condensed into plastic pyrolysis oil.
6. Gas recycling and emission treatment – Non-condensable gases are used as fuel or treated before release.
7. Discharge of solid residue – Residual carbon black is collected and cooled.

Tyre Pyrolysis Process

The tyre pyrolysis process involves similar steps with some key differences:

1. Tyre shredding – Whole tyres are cut into smaller pieces or shredded for uniform heating.
2. Steel removal – Steel wires are extracted before or after pyrolysis.
3. Feeding into the reactor – Shredded tyre materials are loaded into the pyrolysis reactor.
4. Heating – Tyre rubber is heated to 380–450°C under an oxygen-free environment.
5. Condensation – Vapors are condensed into tyre oil and other byproducts.
6. Carbon black collection – High-quality carbon black is collected for reuse or further processing.
7. Steel wire recovery (if not done earlier)

Key Differences Between Plastic and Tyre Pyrolysis

• Feedstock Preparation: Tyres require shredding and steel removal, while plastic needs sorting and drying.
• Operating Temperature: Plastic may require slightly lower temperatures than tyre rubber.
• Byproducts: Tyre pyrolysis yields more solid residue (carbon black and steel) compared to plastic.

Conclusion

Both processes offer eco-friendly waste disposal and valuable byproducts. However, selecting the right solution depends on your input material and desired outputs. If you’re considering investing in a pyrolysis plant, consult with Beston Group to find the most efficient and suitable machinery for your project.