Collaborative Research: Plasma Assisted Ammonia Combustion: Kinetics, Flame Stabilization and Emission

合作研究：等离子体辅助氨燃烧：动力学、火焰稳定和排放

基本信息

批准号：
2002635
负责人：
Suo Yang
金额：
$ 23.8万
依托单位：
University of Minnesota-Twin Cities
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-01-01 至 2024-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2002635&HistoricalAwards=false
关键词：
Collaborative Research Plasma Assisted Ammonia

项目摘要

Ammonia is considered as a renewable fuel. However, ammonia combustion suffers from two major issues which are preventing its practical application. One is that ammonia flame is very unstable and can easily get extinguished. The other issue is its high emission, which pollutes the environment. In this project, a collaborative team will investigate using plasma (electric discharge) to enhance ammonia combustion process and reduce emission at the same time. The plasma-ammonia combustion interaction has not been studied previously. This award will investigate the underlying physical and chemical processes using experimental and computational tools. The new insights gained from experimental data will be used to develop computational models that can be used in research related to renewable energy. In this project, undergraduate and graduate students will receive hands-on training in experimental and computational skills. They become new contributors to the science, technology, engineering, and mathematics (STEM) workforce of United States. Significant opportunities exist at both University of Minnesota and Georgia Institute of Technology to engage underrepresented students and researchers.The goal of this project is to understand the physical and chemical processes to stabilize ammonia flames and reduce NOx emission simultaneously by non-equilibrium plasma. This project has two key hypotheses: (1) prompt ammonia oxidation/decomposition introduced by plasma enhances flame; (2) the production of NH and NH2 from plasma reduces NOx emission. Accordingly, the scope and objectives of this proposed research are: (i) investigation of fundamental ammonia plasma chemical kinetics to understand its prompt dissociation and oxidation induced by plasma at different values of reduced electric field (E/N). This will be achieved by conducting experiments in a flow reactor with speciation measurement and one-dimensional (1D) numerical simulations with detailed plasma and combustion chemical kinetics; (ii) investigation of interactions between plasma kinetics and flame dynamics (including lean blow-off and thermoacoustic combustion instability) by conducting experiments in a model gas turbine combustor using NH, NH2, NO and OH planar laser induced fluorescence (PLIF) and three-dimensional (3D) direct numerical simulations (DNS) with a simplified plasma model deduced from detailed 1D modeling. The experimental work will be conducted by the Georgia Institute of Technology team and the numerical work will be conducted by the University of Minnesota team.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

氨被认为是一种可再生燃料。然而，氨燃烧有两个主要问题阻碍了其实际应用。一是氨火焰很不稳定，很容易熄灭。另一个问题是其排放量高，污染环境。在这个项目中，一个合作团队将研究使用等离子体（放电）来增强氨燃烧过程并同时减少排放。先前尚未研究过等离子体-氨燃烧相互作用。该奖项将使用实验和计算工具研究潜在的物理和化学过程。从实验数据中获得的新见解将用于开发可用于可再生能源相关研究的计算模型。在这个项目中，本科生和研究生将接受实验和计算技能的实践培训。他们成为美国科学、技术、工程和数学 (STEM) 劳动力的新贡献者。明尼苏达大学和佐治亚理工学院都存在吸引代表性不足的学生和研究人员的重要机会。该项目的目标是了解通过非平衡等离子体稳定氨火焰并同时减少氮氧化物排放的物理和化学过程。该项目有两个关键假设：（1）等离子体引入的迅速氨氧化/分解增强火焰； (2)等离子体产生NH和NH2，减少NOx排放。因此，本研究的范围和目标是：（i）研究基本的氨等离子体化学动力学，以了解在不同的还原电场（E/N）值下由等离子体引起的快速解离和氧化。这将通过在流动反应器中进行实验来实现，其中包括形态测量和一维（1D）数值模拟以及详细的等离子体和燃烧化学动力学； (ii) 通过在模型燃气轮机燃烧室中使用 NH、NH2、NO 和 OH 平面激光诱导荧光 (PLIF) 和三-三维（3D）直接数值模拟（DNS），具有从详细的一维建模推导出来的简化等离子体模型。实验工作将由佐治亚理工学院团队进行，数值工作将由明尼苏达大学团队进行。该奖项反映了 NSF 的法定使命，并通过利用基金会的智力优势和更广泛的影响进行评估，认为值得支持审查标准。