Pyrolysis is process of molecular breakdown where larger molecules are broken down into small molecules. Pyrolysis plant is an industry designed to carry out pyrolysis of waste plastic & tires. In case of plastic & tires pyrolysis, long chain polymer is broken down into smaller chains of hydrocarbon gas and pyrolysis oil. Heat and catalyst are required for the following reaction. The followings are applications of the end products from tire pyrolysis process:
Fuel oil (40 to 45%):
The main oil product produced by recycling application is the fuel oil, which is wide used for industrial and commercial purposes. The oil has 40%-45% of the amount of recycled scrap tires, which will be carried with licensed tanker trucks.
Carbon black (30 to 35%):
Carbon black is the main product recycled by the pyrolysis technology. The amount of recycled carbon black is 30%-35% (depending on the type of tire) of the total amount of scrap tires recycled in the system. Carbon black is used as raw material or main ingredient in many industries and the chemical structure of carbon black strengthens, lengthens the endurance, and improves the coloring features of the materials.
Carbon black produced by pyrolysis application (CBP) is more economical compared to carbon black produced primarily from petroleum and is more price-efficient. It is to be used as an ingredient in the following industries:
* Electric cable jacketing
* Conveyor bands
* Carrier bands
* Home and doormats
* Black nylon bags
* Rubber additives
* Automotive spare parts
* Heat isolation
* Black colorant in rubber materials
* Plastic pipes
* Industrial rubber products
* Fire fighting
Steel wire (15 to 20%):
Tires contain steel wires, the amount ranging from 15% to 20% of the total tire weight. All of the steel present in the tire can be detached after the pyrolysis recycling process is completed. Valuable steel wires are pressed and sold to steel and scrap dealers.
Gas (5 to 7%):
Non-condensable gases arise during the recycling application which:
* Has a higher calorific value compared to natural gas;
* Can replace natural gas and propane when stored;
* Can be used as energy resource in gas burners, also used in pyrolysis tire recycling system.
The amount of gas generated in the system is 5 to 7% of the total amount of recycled tires and considering the 9 ton scrap tire/day recycling capacity, the facility generates 1400 – 1500 m*/day gas which has an enormous energy potential when evaluated.