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Show To Blow* And Suck Root B»<*hro Exhaust Thermocoupto Sample Port 1 S«cbon2 (Translon/Attarbumar) Figure I. EPA Rotary Kiln Incinerator Simulator. Experimental Procedures T w o different surrogate waste materials were examined, so that the effect of the pulse combustor on emissions from burning different types of wastes could be determined. Toluene was chosen as a surrogate liquid waste, and polyethylene was chosen as a surrogate solid waste. The toluene charges consisted of a measured mass of toluene absorbed onto 180 g of ground corncob and placed into a 0.95L (1 qt) cardboard container. The polyethylene charges consisted of six 6 in. pieces of 1-1/2 in. black polyethylene tubing. Four different masses of toluene were examined (60, 80, 100, and 150 g) along with a single mass (270 g) of polyethylene. Due to problems with excessive scatter in the data in the low toluene mass case, the data for the 60 g case are not presented here. The excessive scatter in the 60 g case was due to the small sizes of the generated puffs approaching the accuracy limits of the surrogate performance indicators used to determine the magnitude of the puffs. In each experimental condition, the burner was operated in a non-pulsing, idle mode, and in a corresponding pulsating mode, wherein the amplitude of the pulsations at the measurement point was maximized, and the frequency was matched as closely as possible to the frequencies at the other pulsating test conditions. Surrogate Performance Indicators It is necessary, when comparing incinerator operating conditions, to use a reasonable basis for determining performance of the incinerator. The Resource Conservation and Recovery Act (RCRA) mandates that all hazardous waste incinerators maintain a 99.99% Destruction and Removal Efficiency (DRE) of each principle organic hazardous constituent (POHC) contained in the waste. D R E is a costly analysis to perform, and takes weeks before the analytical results are delivered. In addition, D R E ignores the products of incomplete combustion (PICs) emitted from incinerators, which could possibly be as hazardous or more hazardous than their parent P O H C. What is needed is a "quick and dirty" measurement of incinerator performance that takes emissions of all easily measurable pollutants into account. EPA has been working to develop an on-line performance indicator for combustors burning hazardous waste. In particular, this on-line performance indicator must be easy to measure and 4 V-28 |