Modeling of Polychlorinated-Dioxon and -Furan Congener Profiles from Municipal211 Waste Combustion

摘要

The paper discusses a mode, based on experimental data, that was developed to211u001edescribe the profile of polychlorinated dibenzo-p-dioxin (PCDD) and 211u001epolychlorinated dibenzofuran (PCDF) congeners formed in the duct region of a 211u001epilot-scale combustor simulating large-scale municipal waste combustion. The 211u001ecombustor allowed variation of operating conditions and gas concentrations to 211u001eeffect various conditions of hydrogen chloride (HC1), oxygen, and chlorine (C1) 211u001econcentration; temperature; residence time; quench rate; and calcium hydroxide 211u001esorbent injection. A translated Poisson process model uses structural equations 211u001eto show the effect of operating parameters and poisson model properties on 211u001esampled congener distributions and total yields. The model shows that increased 211u001eHC1 concentration results in higher yields of PCDD and PCDF and causes shifts to 211u001ehigher peak C1-number congener distributions. Continued development of the model 211u001eand its theory may provide mechanistic insight into preventing formation and 211u001ereducing toxicity by alternation of combustion-related parameters.