Tyre pyrolysis is a process that converts waste tyres into valuable products.
The main outputs of tyre pyrolysis include carbon black, pyrolysis oil, steel, and gas.
Each of these products has specific characteristics and uses.
Carbon Black: A High-Value Product
Approximately 380kg of carbon black is produced from the pyrolysis of a ton of tires.
This carbon black is of high quality and has a high yield, often exceeding the income from pyrolysis oil.
It is used in various applications such as in tires and other rubber products, inks, and asphalt modifiers.
This demonstrates its high application value.
Pyrolysis Oil: Versatile and Energy-Rich
About 300kg of pyrolysis oil is generated from the process.
This oil has low viscosity and a high calorific value, making it suitable for direct use as fuel.
Additionally, it can be further distilled to increase its value.
The oil is a valuable product due to its energy content and versatility in industrial applications.
Steel: Recycled and Repurposed
Approximately 170kg of steel wire is recovered from the pyrolysis process.
This steel can be repurposed into various basic steel materials such as metal abrasives and steel wire cut shots.
The recovery of steel is significant as it reduces the need for raw material extraction and contributes to recycling and sustainability.
Gas: A By-Product with Value
Around 150kg of gas is produced, with about 40% methane content.
This gas is a by-product of the pyrolysis process and is generated during the depolymerization or degassing phase, which typically runs for 3-5 hours.
The gas flows through a heat exchanger where it is separated from the oil through a condensation process.
This gas can be used as a fuel source, contributing to the overall energy efficiency of the pyrolysis system.
The Efficiency and Benefits of Tyre Pyrolysis
The tire pyrolysis process is advantageous as it does not require the shredding or fractionating of tires prior to processing.
This simplifies the preparation steps.
The system is modular and scalable, allowing for the treatment of 1000kg of tires per reactor in a 4-6 hour process.
This results in a daily output of 4 tons per reactor.
This efficiency and the variety of valuable end products make tire pyrolysis a profitable and environmentally beneficial method for managing waste tires.
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