Which gas can be used as a source of carbon in tyre industry?
By the time it is scrapped, a tyre generally loses around 20% of its weight. Tyres comprise natural rubber, synthetic rubber, carbon black, oil and various reinforcers….
| Material | Passenger car | Truck |
|---|---|---|
| Zinc oxide | 1% | 2% |
| Suplhur | 1% | 2% |
| Additives | 7.5% | 5% |
| * Part of carbon black may be replaced by silica in certain types of tyres |
What is the typical pyrolysis temperature range for tyres?
Thermogravimetry analysis confirms that the pyrolysis of used tyre at atmospheric pressure commences at 250°C and completes at 550°C.
What is tyre pyrolysis oil?
Pyrolysis oil is the end product of waste tyre and plastic pyrolysis, the oil is wide used as industrial fuel to substitute furnace oil or industrial diesel. The pyrolysis oil is extracted from waste tyre or waste plastic by our pyrolysis plant, the pyrolysis plant is a machine converts waste tyre to oil.
How do you remove Sulphur from pyrolysis oil?
Doǧan, Elik and Özdalyan [6] used the oxidative desulphurisation method to remove sulphur from raw pyrolysis oil as part of a five stage purification process; 1) Hydro sulphuric acid treatment, 2) Activated bentonite-calcium oxide, 3) Vacuum distillation, 4) Oxidative desulphurisation, 5) Washing and drying.
What is pyrolysis carbon black?
Commercial CB is rich-carbon material widely used as reinforcing filler in rubber goods. When waste tyres are transformed by pyrolysis, the obtained solid fraction known as pyrolytic carbon black (CBp) contains the original CB (80-90 wt. %) added in tyre manufacturing process along with sulphur (1-3 wt.
What is Coalchar?
Char is the solid material that remains after light gases (e.g. coal gas) and tar have been driven out or released from a carbonaceous material during the initial stage of combustion, which is known as carbonization, charring, devolatilization or pyrolysis.
How does the pyrolysis process for tyres work?
Here is an introduction to the tyre pyrolysis process. Waste tyre pyrolysis refers to the technology that produces tire oil, carbon black, steel wire, gas and other products by processing waste tyres and rubber through a pyrolysis plant.
What kind of gas is used in pyrolysis?
The reactor is typically heated externally by an electric furnace and nitrogen or another inert gas is used as a carrier gas. The thermally degradation of the tyre starts at around 350 °C and therefore pyrolysis experiments are usually in the range of 450–700 °C.
How does pyrolysis affect the yield of oil?
Differences in heating rates and in particular pyrolysis gas residence times can significantly impact the relative yields of oil and gas, where higher temperatures of pyrolysis and long gas residence times in the hot zone of the reactor can crack the oil to gas.
Are there alternative treatment processes for waste tyres?
There has been great interest in alternative treatment processes for waste tyres, amongst which is the use of pyrolysis technology ( Sienkiewicz et al., 2012 ).