System Products
Reverse Polymerization of scrap tires breaks down 100% of the scrap tire feed into three components that have commercial value:
- Recycled Carbon Black.
- Scrap Steel.
- Hydrocarbons.
The recycled carbon black is a mixture of the original grades used to manufacture the original tires. Tire production uses 65% to 70% of world carbon black production which represents more than 6,800,000 tons annually (6,200,000 tonnes/year). EWI is confident that the quality of the carbon black produced by Reverse Polymerization is superior to other recycling methods, such as pyrolysis. Our carbon black has many practical applications in the production of tires and other products.
A single TR-6000 Reverse Polymerization tire reduction facility will produce more than 15,000,000 lb (6,850,000 kg) of recycled carbon black per year. The recycled carbon black recovered from the scrap tire feed represents 38% of the input mass. With typical carbon black prices ranging from $0.20 to $0.60 US, this will generate a revenue stream from carbon black sales of $3 million to $9 million US per year.
 The scrap steel remaining at the end of the Reverse Polymerization process is unchanged from the material used in the original tire production and can be sold for scrap and recycled for the production of new products. The scrap metal recovered represents 10% of the input feed.
The hydrocarbons generated from Reverse Polymerization include both a gaseous phase and light synthetic crude oil. The gaseous phase consists of low molecular weight short-chain hydrocarbons (methane, ethane, propane and butane) that provide a very hot and very clean burn (1,600 BTU/SCF). The synthetic oil has a heating value of 19,000 BTU/lb and is similar to a light crude oil. The hydrocarbons can be used to generate electricity or sold as other valuable feed stocks.
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Gas Composition - Tire Reduction |
Component |
% by weight |
% by volume |
Methane |
16.1% |
31.5% |
Ethane |
32.6% |
34.1% |
Propane |
7.6% |
5.4% |
Iso-Butane |
1.2% |
0.6% |
n-Butane |
33.1% |
17.9% |
Nitrogen |
9.4% |
10.5% |
H2S |
0.0%* |
0.0%* |
* After scrubbing of the gas.
* Heat flow for a model TR-6000 from the gaseous hydrocarbons is 28,910,000 BTU/hr (30,500,000 kJ/hr).
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