Reverse Polymerization (RP) of scrap tires breaks them into three commercially viable components, namely:
- Recycled Carbon Black
- Scrap Steel
The carbon black recovered from the TR process is a blend of the various grades used to manufacture the original tires. Tire manufacturers use over 60% of world carbon black production, representing more than 6,000,000 tons annually (5,454,000 tonnes/year). The carbon black produced using EWS’s low temperature RP process is superior to many of the other recycling methods, such as pyrolysis, where high temperatures can affect the carbon black’s properties and ability to be used in new rubber products. EWS’s carbon black has been tested by several third party labs to confirm its quality and properties. A single TR-6000 RP facility will recover more than 7,000 tons (6,363 tonnes) of carbon black per year.
The scrap steel remaining at the end of the RP process is unchanged from the material used in the original tire. The steel can be sold to a recycling facility for use in the production of new products. The steel represents 10% of a passenger tire by weight.
The hydrocarbons generated from the EWS RP process include both a gaseous and a light synthetic crude oil. The gaseous component consists of low molecular weight short-chain hydrocarbons (methane, ethane, propane and butane) that provide a very hot and very clean burn . The synthetic oil is similar to a light crude. The hydrocarbons can be used to generate electricity or sold as other valuable feed stocks.