The waste yields of pyrolysis can vary significantly based on several factors.
These factors include the type of waste material being processed and the specific pyrolysis technology used.
Understanding Pyrolysis Waste Yields: A Detailed Breakdown
Waste Tires
For waste tires, the total yield of gas products is typically 30-53% by weight.
The yield of oil is 28-42%.
The yield of char is 14-28%.
Waste Plastics
For waste plastics, the yield of pyrolysis products can range from 30-80% oil.
The yield of carbon black is 20-30%.
The yield of gas is 10-20%.
The exact yield depends on factors such as the quality and type of plastic waste, as well as the pyrolysis technology used.
If the waste plastic is pure, dry, and clean, the yield of plastic pyrolysis products will be higher.
Municipal Waste
The main products obtained from pyrolysis of municipal wastes, including plastic waste, are a high calorific value gas (synthesis gas or syngas), a biofuel (bio oil or pyrolysis oil), and a solid residue (char).
The distribution of these products depends on the temperature and heating rate during the pyrolysis process.
At low temperatures and slow heating rates, solid residues are the main product.
At high temperatures and rapid heating rates, gases are the main product.
At intermediate temperatures, liquid bio-oil is the main product.
Pyrolysis Oil Applications
The pyrolysis oil obtained from plastic pyrolysis can be further upgraded to engine fuel or converted into syngas through gasification processes.
It can also be used as liquid fuel for diesel engines and gas turbines to generate electricity.
Summary
In summary, the waste yields of pyrolysis vary depending on the type of waste material and the specific pyrolysis technology used.
For waste tires, the yields of gas, oil, and char are typically 30-53%, 28-42%, and 14-28% respectively.
For waste plastics, the yields of oil, carbon black, and gas can range from 30-80%, 20-30%, and 10-20% respectively.
The main products obtained from pyrolysis of plastic waste are gas, oil, and char, with the distribution depending on the temperature and heating rate during the pyrolysis process.
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