Tire derived fuel (TDF)
The use of scrap tires for fuel increases every year, and is currently the largest single use of scrap tires.
Most individuals are confused about the difference between a "burning tire" which emits black smoke and damages the environment, and the use of scrap tires as a fuel source for power companies. The burning of tires for the fuel industry is a safe and economical practice that has been approved by the State of Wisconsin and the Environmental Protection Agency (EPA).
TDF is substituted on a proportional basis for coal as a fuel. Typically, TDF replaces 10% of the coal used. The heating value of TDF is about 15,500 Btu per pound. Air emissions improve with TDF due to low sulfur and nitrogen content. The proportion remains constant, and the TDF/Coal mixture generally burns cleaner than coal alone.
In many ways, boilers, because of their high heat, are ideal for the use of TDF because the ash is incorporated into the final product; there is NO waste.
Each facility that uses TDF must, after being permitted, pass an initial compliance test to ensure that it will comply with the emissions limits and operating conditions written in their permit. Following the initial test, most coal-fired boilers are equipped with Continuous Emission Monitors (CEMs) that take over monitoring. This ensures that the facility is in proper compliance at all times.
Currently, Auburndale Recycling Center processes 7,000 tons of TDF a year. We ship directly to Alliant Energy located in Sheboygan, Wisconsin.