Pyrolysis is a process that breaks down larger plastic molecules into smaller molecules of oil, gas, and carbon using heat.
Most types of plastics can be used for pyrolysis, excluding PVC and PET.
9 Types of Plastics Suitable for Pyrolysis
1. Pure PP, PE, PS
These plastics have an oil yield of over 90%, making them highly suitable for pyrolysis.
2. ABS
This type of plastic has an oil yield of more than 40%.
3. Pure White Plastic Sheets
They yield about 70% oil.
4. Instant Noodles Packing Bags
These yield about 40% oil.
5. Plastic Logo
This yields about 20% oil.
6. Paper-Mill Waste
Wet waste yields 15%-20% oil, while dry waste yields 50% oil.
7. Plastic Household Garbage
This yields between 30%-50% oil.
8. Pure Plastic Cable Sheath
This yields about 80% oil.
9. Pure Plastic Bags
These yield about 30% oil.
The Pyrolysis Process
1. Shredding
The plastic waste is shredded into smaller pieces.
2. Drying
The shredded plastic is dried to remove any moisture.
3. Preprocessing
Non-plastic materials are separated from the plastic waste.
4. Pyrolysis
The plastic is heated in the absence of oxygen to break down into smaller molecules.
5. Oil Distillation & Purification
The resulting oil is distilled and purified.
6. Storage and Dispatch
The purified oil is stored and prepared for dispatch.
Key Performance Indicators (KPIs) for Plastic Pyrolysis Technology
1. Safety
Ensuring the safety of equipment, humans, and the process itself is crucial due to the high temperatures involved.
2. Efficiency
The process should efficiently convert plastic waste into usable oil and other by-products.
3. Environmental Impact
The technology should minimize environmental impact by effectively handling emissions and waste.
Cold Plasma Pyrolysis
This is an advanced method that allows for more efficient recovery of ethylene, a key component in many plastics.
It can recover 55 times more ethylene than normal pyrolysis and convert 24% of plastic weight into valuable products.
Continue Exploring, Consult Our Experts
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