Tyre pyrolysis oil (TPO) is a valuable byproduct of the tyre pyrolysis process.
It contains several important chemicals.
These include benzene, toluene, ethylbenzene, xylene (BTEX), and limonene.
Tyres are primarily made up of rubber, which can be natural or synthetic.
They also contain carbon black and various additives.
These additives include plasticizers, antiagers, sulfur, and zinc oxide.
During the pyrolysis process, the rubber in tyres is broken down.
This breakdown produces monomers, biopolymers, and fragments.
These components are then polymerized into various olefins.
This results in the production of fuel oil, uncondensable gas, carbon black, and steel wire.
The composition of these end products can vary.
Factors affecting this include the pyrolysis method and temperature.
Waste tyres and rubber materials are suitable for batch pyrolysis plants.
This includes car tyres, truck tyres, motorcycle tyres, and bicycle tyres.
It also includes rubber cable sheaths, rubber soles, rubber sheets, and carpets.
The oil yield from different types of rubber and tyres can range from 30% to 52%.
In addition to tyres, waste plastics can also be used for pyrolysis.
Nearly all types of plastics, except for PVC and PET, can be used.
The oil yield from different plastics varies.
Pure polypropylene (PP), polyethylene (PE), and polystyrene (PS) have oil yields of over 90%.
ABS has an oil yield of over 40%.
Other materials like white plastic sheets, instant noodles packing bags, plastic logos, wet and dry paper-mill waste, plastic household garbage, plastic cable sheaths, and plastic bags also have varying oil yields.
The pyrolysis oil obtained can be used as fuel in various industries.
It can also be refined into diesel through an oil distillation system.
This provides better pricing and wider applications.
The carbon black produced can be used as a raw material in the rubber and plastic industry.
It can be used to produce fortifiers, fillers, and colorants.
The steel wires can be reused in steel-making factories to produce steel rods.
In a small batch pyrolysis machine, waste tyres are fed into a vacuum pyrolysis reactor.
The reactor is then sealed, and the burner is started for preheating.
Once the reactor temperature reaches around 150 degrees, oil gas production begins.
The composition of the raw materials used will determine the specific amounts of pyrolysis oil, carbon black, steel wire, and gas produced.
Tire pyrolysis offers several advantages.
It can process whole tires without shredding.
It has a homogeneous heating process.
It generates gas by-products that can be used for energy generation or sold.
It produces pyrolysis oil that can be used for various purposes.
The entire process is designed to minimize harmful pollution to the environment.
Continue exploring, consult our experts
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