Long & Medium Term Research: Evolution and Reactions of NOxPrecursors from Coal Volatiles

长期中期研究： 煤挥发分中NOx的前体物 该奖项是根据长期计划提出的。 &在国外卓越中心的中期研究。 的 该计划旨在使美国科学家和工程师能够 在国外的研究机构进行长期研究， 证明卓越。 奖项提供了机会， 开展联合研究，以及使用独特或复杂的 实验设施、专业知识和实验条件 国外 该奖项将支持约翰·C·博士15个月的访问。陈 去澳大利亚和彼得·F·CSIRO的纳尔逊 在North Ryde的“NOx前体的演变和反应” 煤炭挥发物“煤燃烧产生光化学 烟雾和污染物导致酸雨。 氮氧化物 (NOx)是这些污染物中最严重的，主要是 煤基质中氮的氧化结果 (fuel NOx）。 本研究旨在澄清几个方面 煤挥发物形成氮氧化物。 研究人员将 研究澳大利亚一系列地区氮氧化物前体的演变 煤在一个三段反应器：第一个产生的 挥发分的快速煤热解在流化床; 第二个用作加热的传输线， 烧结石英玻璃料，以消除炭和灰残留物 从气态产物流;最终反应器简单地 管式石英炉，其中主要煤挥发物 在不同的炉温下进行二次反应， 时间和停留时间。 NOx前体和其他 将使用FTIR、GC和GC/MS测量反应产物。 研究的具体目标是：（1）测量和 将前体的形成速率与 焦油和母煤中的氮;（2）研究了焦油和母煤中的氮含量， 前体与其他煤挥发分的相互作用， 其中各种气体种类（包括O2）被引入到 管式炉;（3）使用这些数据作为模型的输入 用于NOx形成。 实现这些目标将是一个 在理解和预测氮氧化物方面取得重大成就 澳大利亚煤在实际燃烧中的形成 设备和结果可以扩展到任何煤 地理起源 授标建议提供资金， 适当的，国际旅行，出国当地旅行， 津贴，家属津贴（如适用）和公寓 美国本土机构的行政津贴为250美元。

Long & Medium-Term Research: The Evolution and Reactions of NOx Precursors from Coal Volatiles This award recommendation is made under the Program for Long & Medium-Term Research at Foreign Centers of Excellence. The program seeks to enable US scientists and engineers to conduct long-term research abroad at research institutions of proven excellence. Awards provide opportunities for the conduct of joint research, and the use of unique or compli- mentary facilities, expertise and experimental conditions in foreign countries. This award will support a 15 month visit by Dr. John C. Chen to go to Australia to work with Dr. Peter F. Nelson of CSIRO in North Ryde on "The Evolution and Reactions of NOx Precursors from Coal Volatiles." Coal combustion generates photochemical smog and pollutants causing acid rain. Oxides of nitrogen (NOx) are among the most severe of these pollutants, primarily the result of oxidation of nitrogen bound in the coal matrix (fuel NOx). This research seeks to clarify several aspects of NOx formation from coal volatiles. The researchers will study the evolution of NOx precursors for a range of Australian coals in a three-section reactor: the first generates the volatiles by rapid coal pyrolysis in a fluidized bed; the second serves as a heated transport line and contains a sintered quartz frit to eliminate the char and ash residues from the gaseous product stream; the final reactor is simply a tubular quartz furnace where the primary coal volatiles are subjected to secondary reactions at various furnace tempera- tures and residence times. The NOx precursors and other reaction products will be measured with FTIR, GC, and GC/MS. The specific goals of the research are: (1) to measure and relate the rate formation of the precursors to forms of nitrogen in the tar and the parent coal; (2) to study the interactions of the precursors with other coal volatiles and with various gas species (including O2) introduced into the tubular furnace; and (3) to use these data as input to models for NOx formation. The attainment of these goals will be a significant achievement in understanding and predicting NOx formation from Australian coals in practical combustion devices and the results may be extended to coals of any geographic origin. The award recommendation provides funds to cover, as appropriate, international travel, local travel abroad, stipend, dependents' allowance if applicable, and a flat administrative allowance of $250 for the U.S. home institution.