Research Initiation Award: Metal Additive Effects on Soot Morphology in Laminar Diffusion Flames

研究启动奖：金属添加剂对层流扩散火焰中烟灰形态的影响

• 批准号: 9109166
• 负责人: Constantine Megaridis
• 金额: $ 7.38万
• 依托单位: University of Illinois at Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-05-01 至 1993-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9109166&HistoricalAwards=false
• 关键词: Research; Initiation; Award; Metal; Additive

This experimental study addresses the influence of iron additives on soot-particle morphology in laminar, coannular, ethylene/air diffusion flames. The primary objective of the work is to determine both state and morphology of the additive species within the combustion environment, as well as their dependence on flame coordinates. Other fundamental issues to be addressed include whether the additive intervenes at an early or late combustion stage, to determine if iron combustion products are occluded in the soot phase, and in case they are, to examine their incorporation within the carbon matrix as a function of flame location. The incorporation of iron combustion products within the soot phase (if present) will be quantified through an elemental analysis of the particulate phase collected from various flame locations. A recently developed intrusive sampling technique winl be used in conjunction with transmission electron microscopy to provide the samples for morphological and elemental characterization of the particulate phase within the flames. The proposed fundamental research would contribute to a better understanding of the metal-additive influence on the basic mechanisms involved in the formation, growth, oxidation and emission of soot from laboratory, well-defined flames. Our ability to resolve these issues may define new ways to enhance and optimize fuel-additive use for soot suppression.

这项实验研究探讨了铁的影响 添加剂对烟炱颗粒在层状，共环状， 乙烯/空气扩散火焰 的主要目的 工作是确定添加剂的状态和形态 燃烧环境中的物种，以及它们的 火焰坐标的依赖性。 其他基本问题， 需要解决的问题包括添加剂是否在一定程度上进行干预 早期或晚期燃烧阶段，以确定是否铁 燃烧产物在烟灰相中被吸留， 如果他们是，检查他们的合并， 碳基质作为火焰位置的函数。 的 在烟灰中掺入铁燃烧产物 相（如果存在）将通过元素 从各种火焰中收集的颗粒相的分析 地点 最近开发的侵入式取样技术 将与透射电子结合使用 显微镜检查，以提供用于形态学和 颗粒相的元素表征 火焰 拟议的基础研究将有助于更好地 了解金属添加剂对基础 参与形成、生长、氧化和 从实验室排放的烟尘，定义明确的火焰。 我们 解决这些问题的能力可能会定义新的方法，以提高 并优化燃料添加剂的使用以抑制烟灰。