On the Occurrence of Transient Puffs in a Rotary Kiln Incinerator Simulator II. Contained Liquid Wastes on Sorbent

Rotary Kiln Incineration II. Laboratory-Scale Desorption and Kiln-Simulator Studies—Solids

“…The toluene could have also been converted to soot or other stable intermediates (PICs) which may have subsequently been partially combusted; future studies will include complete exhaust hydrocarbon measurements. Linak, Wendt and co-workers 6 have shown that significant amounts of soot can be formed under some conditions involving toluene/sorbent systems. Using the CO2 concentration data and integrating over time, the fraction of toluene burned was found at each temperature and graphed versus temperature, Figure 13.…”

“…At higher loadings, 10 percent to 50 percent, the toluene might form soot, as previously reported. 6 For all temperatures, the concentration of toluene in the sorbent at the end of the 1. shown in Figure 14. For the higher concentration, 2 percent, the mass flow rate of toluene was initially the same as the 1 percent loading, but then decreased significantly during the peak burning period.…”

“…Research is currently exploring the destruction of principle organic hazardous constituents (POHCs) and PICs in the afterburner system. 4 - 5 The data available on primary combustor phenomena, particularly on the transient evolution of contaminants from a solid sorbent, are limited; however, recent work 6 has demonstrated the importance of transient puffs in a rotary kiln environment. As delisting requirements become more stringent, it will become more important to understand, optimize, and predict the phenomena occurring in the primary combustor.…”

Basic Research on the Emission of Polycyclic Aromatic Hydrocarbons caused by Waste Incineration

“…3 -6 Increasing the rate of volatile gases causes incomplete combustion because of insufficient flue gas oxygen. 6 This may explain why the maximum concentration of PAH in the flue gas was given when both the blending rate of waste plastics and the combustion temperature were high. Note: a) glass fiber filter + polyurethane foam plugs; combustion temperature 730 -320 ~ 340° C.…”

Evaluation of near-infrared tunable diode lasers for detection of transient emissions from a rotary kiln.

“…Past studies at the EPA's Air Pollution Prevention and Control Division (APPCD) combustion facility have demonstrated that the quantity of unburned gases and particulates produced during a transient upset (i.e., the puff magnitude) in a rotary kiln combustor depends in a complex manner on kiln temperature and rotation speed, waste composition and waste charge size, method of waste injectiodpackaging, and level of steady and dynamic 0 2 enrichment (Linak et al, 1987a(Linak et al, , 1987bWendt and Linak, 1988;Lemieux et al, 1990Lemieux et al, , 1992. The magnitude of transient system upsets may be characterized by the amount of O2 required to completely oxidize the unburned gases and particulates (Lemieux et al, 1995).…”