Economic Consideration Relating to TDF

Cement Kilns
The capital costs associated with modifying feed and emission control equipment for TDF burning in cement kilns are minor in most cases. Therefore, the cost savings from TDF is essentially equal to the savings in fuel cost by using TDF in the kiln. This fuel cost advantage is attractive to cement plants because the process is so energy intensive.
However, cement kilns can accommodate many alternate fuels, so that regional availability and price of alternatives may affect the cost advantage. Because of their consumption, cement plants are able to buy conventional fuels in bulk and at somewhat lower prices in general.
This economic consideration is the most significant barrier for TDF applications.
See also Emission Control  in Cement Kilns
As discussed in another section of this report, the price of the processed tire, TDF, is highly dependent on the size reduction and wire removal process. Boilers require higher quality (fine particle and wire-free) TDF
compared to cement kilns.
Another economic barrier is the capital investment required. In general, boilers require some modifications of their configuration to burn TDF properly.
Further research must be conducted to reduce technical difficulties and minimize economic barriers.
See also Emission Control  in Boilers
  1. Leslie Lamarre, Tapping the Tire Pile, EPRI Journal, Sep-Oct 1995 v20 n5 p28(7)
  2. Joel I. Reisman, Paul M. Lemieux, Air Emissions from Scrap Tire Combustion, EPA, Oct. 1997
  3. U.S.Environmental Protection Agency et al, Scrap tire Technology and Markets Noyes Data Corporation, NJ 1993
  4. Mariette DiChristina, Mired in tires. (junk tires),  Popular Science, Oct 1994 v245 n4 p62(4)



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