Formation of Toxic Combustion Byproducts and Soot

有毒燃烧副产品和烟灰的形成

• 批准号: 0121765
• 负责人: Lisa Pfefferle
• 金额: $ 41.5万
• 依托单位: Yale University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-03-01 至 2005-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0121765&HistoricalAwards=false
• 关键词: Formation; Toxic; Combustion; Byproducts; Soot

This is a study of fuel-doped flames designed to identify possible chemical mechanisms responsible for the formation and destruction of toxic hydrocarbons and soot in coflow nonpremixed flames of practical fuel components. The basic methodology is to study flames that are perturbed by doping the fuel in systematic ways to address specific mechanistic issues related to the formation of small aromatics. This strategy allows perturbation analysis, which offers mechanistic insight and model discrimination for systems with many coupled unknowns. Hydrocarbons, such as two-ring aromatics, branched aromatics, large linear or cyclic hydrocarbons, and other compounds typically found in liquid fuels, are doped into methane used as a fuel in an air nonpremixed coflowing flame, and profiles of intermediate and product hydrocarbons are measured. Hydrocarbons are measured with an on-line single-photon photoionization/time-of-flight mass sprectrometer. Small species are measured with electron-impact mass spectroscopy, laser-induced fluorescence, and resonantly enhanced multiphoton ionization, temperature with thermocouples, and soot with laser-induced incandescence.

这是一个研究燃料掺杂火焰，旨在确定可能的化学机制，负责有毒的碳氢化合物和烟灰的形成和破坏的同向流非预混火焰的实际燃料成分。 基本的方法是研究通过系统地掺杂燃料而扰动的火焰，以解决与小芳烃形成相关的特定机械问题。 这种策略允许扰动分析，它提供了机械的洞察力和模型歧视系统与许多耦合的未知数。 烃，如二环芳烃，支链芳烃，大的线性或环状烃，和其他化合物通常在液体燃料中发现，掺杂到甲烷用作燃料在空气非预混同向流动火焰，和中间体和产物烃的配置文件进行测量。 碳氢化合物的测量与在线单光子光电离/飞行时间质谱计。 小物种测量电子碰撞质谱，激光诱导荧光，共振增强多光子电离，温度与热电偶，和激光诱导白炽烟尘。