Abstract
Decomposition method on chlorofluorocarbons (CFCs) in cement kiln is one of the thermal oxidation technologies recommended by the United Nations Environment Programme (UNEP). The decompition of CFC12 recoverd from old refrigerators has been studied in a test plant of small-sized cement kiln.
CFC12 was completely decomposed in the kiln operated under nomal conditions. Emissions of hydrogen fluoride and hydrogen chloride in the flue gas were lower than 0.06 ppb. No formation of toxic halogenated organic compounds like polychlorinated dibenzo-p-dioxins or dibenzofurans was observed in the CFC12incineration.
