Laser-based spectroscopic system for in-situ diagnosis of particle/gas reactive flows

用于颗粒/气体反应流现场诊断的激光光谱系统

• 批准号: 527806316
• 金额: --
• 依托单位: Otto-von-Guericke-Universität Magdeburg
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2023
• 资助国家: 德国
• 起止时间: 2022-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/527806316?language=en
• 关键词: Laser; based; spectroscopic; system; situ

The requested "Laser-based spectroscopic system for in-situ diagnosis of particle/gas reactive flows will enable time-resolved, in-situ, physico-chemical characterization of particle-laden flows as well as of the surrounding gas in high-temperature complex reactive systems. Thanks to ist great versatility, several spectroscopic techniques will be applied, depending on the targeted properties of interest and on the reactive system. Laser-induced breakdown spectroscopy, planar laser-induced incandescence, and planar laser-induced fluorescence constitute the core diagnostics pursued with this system by the main applicant. The characterization of particles/aerosols in flows, including chemical composition and physical properties (e.g., particle size, concentration, and morphology), is highly relevant for many industrial production and emission processes. Optical diagnostics offer clear advantages for this highly challenging characterization thanks to the possibility of analyzing simultaneously and in a non-intrusive manner several physico-chemical properties with an excellent spatio-temporal resolution and high sensitivity and selectivity. This is needed to obtain new insights in (I) the processes involved in the formation of particles/aerosols from the precursor gas, (II) the interactions between the particles/aerosols with the surroundings, and (III) the implementation of online control approaches, to be able to develop novel design and optimization methods. In the current and planned research projects of the applicants, the main utilization of the requested system is centered on the in-situ physico-chemical characterization of particles/aerosols either formed in the gas phase or entrained directly in the gas-phase, principally in the framework of the thermochemical conversion of biomass and plastics for the production of materials and chemicals. Such experimental approach, combining the different spectroscopic techniques for the on-line, in-situ characterization of particles/aerosols as well as the surrounding gas in the above introduced field is first of ist kind to the knowledge of the applicants. The requested system includes a laser configured to work with high-energy pulses in the IR, visible, and (deep) UV regions, a detector able to provide, with high spectral resolution and sensitivity, the requested information from the reactive systems, the software and computer able to both operate the system and process the data, and the accessories necessary for laser and signal guidance.

所需的“基于激光的光谱系统，用于对粒子/气体反应流动的原位诊断，将实现对粒子流量以及周围气体的高温复杂反应系统中的粒子流以及周围气体周围气体的良好多功能性系统的兴趣的兴趣和兴趣的兴趣，并具有反应性技术的兴趣。激光诱导的分解光谱，平面激光诱导的活化和平面激光诱导的荧光构成了主要申请人对此系统进行的核心诊断，包括粒子/气溶胶在流中的表征，包括化学特性，包括粒子大小，浓度和培养物。这一高度挑战性的表征的优势得益于同时分析和非侵入性的几种物理化学特性，具有出色的时空分辨率，高灵敏度和选择性。这需要在（i）（i）从前体气体形成颗粒/气溶胶的过程中获得新的见解，（ii）颗粒/气溶胶与周围环境之间的相互作用，以及（iii）在线控制方法的实施，以便开发出新颖的设计和优化方法。在申请人的当前和计划的研究项目中，所请求的系统的主要利用集中在于在气相中形成的颗粒/气溶胶的原位物理学化学特征，或者直接在气相中含有的颗粒/气溶胶，或者直接在气相中，主要是在生物量和塑料的热化学转化框架上用于材料和化学物质和化学物质的热化学转化。这种实验方法结合了不同的光谱技术，用于在线，颗粒/气溶胶的原位表征以及上述磁场中周围的气体，这是申请人了解的IST。请求的系统包括一个激光器，该激光器配置为与IR，可见和（深）紫外线区域中的高能量脉冲一起使用，探测器能够提供高频谱分辨率和敏感性，来自反应性系统的请求信息，软件和计算机能够运行系统和处理数据，以及对数据以及激光和信号指南的必要信息。