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.

这是对燃料掺杂火焰的研究，旨在确定可能导致有毒碳氢化合物和烟灰的形成和破坏的可能的化学机制，而在Coflow中，实际燃料成分的非构造火焰。 基本方法是研究通过以系统的方式掺杂燃料来解决与小芳香剂形成有关的特定机械问题的燃料。 该策略允许扰动分析，该分析为具有许多耦合未知数的系统提供了机械洞察力和模型歧视。 碳氢化合物，例如两圈芳香剂，分支芳香剂，大型线性或环状碳氢化合物以及通常在液体燃料中发现的其他化合物，被掺入甲烷中，用作空气中的燃料，在空气中，无质子的蓄积火焰中，并测量了中间和产物氢化物的特征。 用在线单光子光电离/飞行时间质量仪表仪测量碳氢化合物。 小物种通过电子影响质谱，激光诱导的荧光测量，并共振增强了多光子离子化，热电偶温度以及带有激光诱导的白炽灯的烟灰。