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EXPERIMENTAL INVESTIGATION OF PIC FORMATION DURING THE INCINERATION OF RECOVERED CFC-11
Citation:
Springsteen, B., L. Ho, AND G. Kryder. EXPERIMENTAL INVESTIGATION OF PIC FORMATION DURING THE INCINERATION OF RECOVERED CFC-11. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-94/163 (NTIS 94-214772), 1994.
Impact/Purpose:
Information.
Description:
The report gives results of an investigation of the formation of products of incomplete combustion (PICS) during "recovered" trichlorofluoromethane (CFC-11) incineration. Tests involved burning the recovered CFC-11 in a propane gas flame. combustion gas samples were taken and analyzed for volatile organic compounds as well as polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/PCDF). Test results confirm that incineration can be used to effectively destroy recovered CFC11; CFC destruction efficiencies of > 99.9999 (six nines) were consistently demonstrated for CFC-11-to-propane molar ratios of 0. 06-0. 6. t the conditions studied, PCDD/PCDF were either not detected or detected at low levels (< 10 ng/dscm at 7% O2 in the dry combustion gas at standard conditions) when sampling immediately downstream of the combustion flame zone, indicating no homogeneous formation mechanisms within the flame. Additionally, low levels were detected when sampling downstream of the flue gas scrubber. Results of a secondary goal of the study, to determine the fate of chlorine (Cl) and fluorine (F). were inconclusive. Inconsistent mass balances of 29, 200, and 90% were obtained for tests burning CFCs. The Cl/F ratio in the flue gas samples was consistent with that of the CFC-11, demonstrating Cl and F liberation into the flue gas at equivalent rates.