Engineering Research Equipment Grant: Mass Particulate/ Organic Chlorine Monitoring System

该方案要求一个实时质量监测器来测量来自模型燃烧室的颗粒。粒子质量监测器将与卤素特异性检测器耦合，用于分析有机氯化合物，特别是多氯二苯并对二恶英（PCDD）和多氯二苯并呋喃（PCDF）。有证据表明，PCDD/PCDF的形成可能是多相的，并可能在粉煤灰上催化。这些复杂反应的速率数据几乎不存在。一个（几乎）实时的质量监测器将测量从燃烧室出来的颗粒（烟灰、飞灰），并能够确定颗粒积累的质量率、总颗粒质量和颗粒浓度。如果这些测量中的一项或多项与PCDD/PCDF或其前体的水平相关，则可以更好地了解导致其形成的异质过程。所购买的设备将补充并大大扩大进行定量实验的能力，目的是了解从含氯燃料燃烧中形成的多氯联苯和多氯联苯。更好地了解PCDD和PCDF形成的条件对于有意义的焚化炉设计改进至关重要，从而最大限度地减少其向大气的排放。

This proposal requests a real time mass monitor for the measurement of particles from a model combustor. The particle mass monitor is to be coupled to a halogen-specific detector for the analysis of organochlorine compounds, in particular polychlorinated dibenzo-p-dioxins (PCDD) and polychlorinated dibenzofurans (PCDF). There is evidence that the formation of PCDD/PCDF may occur heterogeneously and may be catalyzed over fly ash. Rate data for these complicated reactions are virtually nonexistent. A (almost) real time mass monitor would measure particles coming off the combustor (soot, fly ash) and enable the determination of mass rate of particle accumulation, total particle mass, and particle concentrations. If one or more of these measures correlate with levels of PCDD/PCDF or their precursors, a better understanding of the heterogeneous processes leading to their formation may be obtained. The equipment purchased will complement and greatly expand the capability to perform quantitative experiments aimed at understanding the formation of PCDD's and PCDF's from the combustion of chlorine containing fuels. A better understanding of the conditions under which PCDD and PCDF are formed is vital for meaningful incinerator design improvements that minimize their emission to the atmosphere.