Process
The tyres are not burned. They are heated in a sealed reactor with no oxygen, so the rubber breaks down into vapour and the carbon and steel stay behind as solids.
The basics
Key terms
Pyrolysis is the thermal breakdown of end-of-life tyres at high temperature in a closed-loop system with an inert, oxygen-free atmosphere.
Without oxygen, the tyre cannot burn. Instead, the heat breaks the rubber down: part of it turns to vapour, which is cooled and condensed into oil. What remains in the reactor is carbon, in the form of char, and the steel wire that reinforced the tyre.
Our process runs under strict control, with operating data monitored every minute for completeness, safety and environmental protection.
Step by step
End-of-life tyres and rubber scrap are received, inspected and shredded to suit the reactor.
Shredded material is heated in a sealed reactor with no oxygen. The rubber breaks down instead of burning. Operating data is monitored every minute.
Vapour is drawn off and condensed into oil. The solid carbon and steel wire left in the reactor are separated.
Pyrolysis oil, carbon char and steel scrap are checked, packed or baled, and stored for dispatch.
The products go to cement, steel, brick, glass, ceramic and food factories, boilers, furnaces and power plants.
Outputs
| Product | How it is recovered | Company figure, per year |
|---|---|---|
| Pyrolysis oil | Vapour from the reactor is cooled and condensed into liquid fuel. | 3,500 MT |
| Carbon char | Solid carbon left in the reactor is collected and packed as powder. | 2,700 MT |
| Steel scrap | Bead and belt wire is separated from the carbon and baled. | 1,170 MT |
From 7,800 MT of waste tyres a year. Annual production figures, Eco Nepal Energy Industries.
Quality and process control
We control every stage of production, from raw material sourcing to final delivery, for consistent quality and safe operation.
Safety and environment
Human error, a mechanical fault or an electrical short circuit could cause excess heat in the plant, with a risk of explosion or fire. A PLC-based control panel guards against this: it raises automatic alarms and a hooter to alert the operator and staff, and the alarm also reaches their mobile phones.
An effluent treatment plant separates the waste particles released during production from the water, and the water is reused in the process. Polluted water and waste are not discharged from the plant.
Because the tyres are processed in a sealed system with an inert atmosphere, they break down instead of burning, without the smoke of open tyre burning.
We are happy to talk to buyers, tyre suppliers and partners about how the plant works and what it produces.
Or call +977 71 536039
Email econepal2023@gmail.com
