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Show subsequently be destroyed by the system afterburner. Under circumstances when the afterburner cannot destroy the quantity of organic material produced, this puff leads to a system failure. This paper discusses results of part of an in-house program at the U.S. Environmental Protection Agency (EPA) directed toward gaining engineering insight into potential problem areas related to rotary kiln incineration. General objectives are to delineate fundamental combustion phenomena that are important in the generation of transient puffs from batch fed wastes. It is not within the scope of this work to do exhaustive POHC, PIC, or ORE analyses. The specific objectives of the work presented here are to determine the effects of oxygen enrichment through the primary flame on the formation of transient puffs, caused by the batch introduction of a contained surrogate liquid waste (toluene) on sorbent into a rotary kiln incinerator simulator. Further, the tests and analysis techniques attempt to separate the individual effects of dilution, temperature, oxygen flow, and oxygen partial pressure. Results from tests utilizing this simulator to examine transient puffs from prototype solid plastic wastes and contained surrogate liquid wastes without oxygen enrichment have been presented previously.l,2 This paper is divided into four sections. Following the Introduction, the Experimental Approach is discussed. Next, Results and Discussion of the experimental study are presented. Finally, the findings from this study are summarized in the Conclusions. 4 |