Environmental Waste International - default

By: Ewi  09-12-2011
Keywords: Tires, Oil, Carbon

In 1994 EWS designed a proof of concept prototype for the breakdown of rubber tires, the TR330. The purpose of this research was to demonstrate that a continuous feed system could be successfully built and operated as well to establish the economic value and quantities of the by-products produced. The TR-330 was installed at the EWS Ajax facility and operated between 1994 to 1998 for demonstration and product analysis purposes. The by-products, namely oil, carbon black and steel, were collected and analyzed by third party labs to determine their quality and value. This information formed the basis of EWS's economic TR projections and the decision to establish the TR1500 as the base module for the TR series.

Utilizing the patented EWS Reverse Polymerization (RP) process, the EWS Model TR-1500 breaks tires into three products:

  • Hydrocarbons (oil and gas)
  • Carbon black
  • Steel

The model TR-1500 is the basic processing module. All larger facilities are multiples of the TR-1500.

Facility Sizes

TR-1500 1 processing line 1500 tires/day

500,000 tires/year

TR-3000 2 processing line 3000 tires/day

1,000,000 tires/year

TR-6000 4 processing line 6000 tires/day

2,000,000 tires/year

Scrap tires enter the processing area and proceed up an inclined tire feed into the dry-feed tower. Each tire passes through a series of shutters before entering the RP process line. Tires move through the tunnel where the microwave field causes the tires to breakdown through the RP process. The process gases are drawn off the tunnel and pass through a condenser where the oil is collected. The remaining gaseous hydrocarbons proceed to the scrubber where the sulphur is removed. The recovered gas and/or oil hydrocarbons can be used to generate electricity for the system or can be sold as feedstock for other industrial processes.

The carbon and steel remain on the conveyor until exiting the microwave tunnel. At this point the carbon is separated from the steel by passing through a water separator tank where the carbon is collected and transferred to containers for further processing or shipping. The steel is washed and placed in storage bins. The process reuses or recycles 100% of the scrap tire feed.

Keywords: Carbon, Carbon Black, Hydrocarbons, Oil, Scrap Tire, Scrap Tires, Tires

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Environmental Waste International - process

In addition, the hydrocarbons produced from the Reverse Polymerization process are much lower in sulfur than the scrap tire rubber; therefore, there is a significant reduction in the sulfur released to the atmosphere by generating power from Reverse Polymerization compared to burning of TDF.


Environmental Waste International - products

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. The carbon black recovered from the TR process is a blend of the various grades used to manufacture the original tires.