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.

氨被认为是可再生燃料。但是，氨燃烧遇到了两个主要问题，这些问题阻止了其实际应用。一个是氨明非常不稳定，很容易被熄灭。另一个问题是它的高排放，污染了环境。在这个项目中，一个协作团队将使用等离子体（电气放电）进行调查，以增强氨燃烧过程并同时减少排放。先前尚未研究血浆 - ammonia燃烧相互作用。该奖项将使用实验和计算工具研究基本的物理和化学过程。从实验数据中获得的新见解将用于开发可用于与可再生能源有关的研究。在这个项目中，本科生和研究生将接受实验和计算技能的动手培训。它们成为美国科学，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大学技术学院都有很大的机会吸引代表性不足的学生和研究人员。该项目的目的是了解稳定氨气的物理和化学过程，以通过非平衡等离子体同时减少NOX发射。该项目有两个关键的假设：（1）血浆引入的促进氨氧化/分解增强火焰；（2）血浆中NH和NH2的产生减少了NOX的发射。因此，这项拟议的研究的范围和目标是：（i）研究基本氨等离子体化学动力学，以了解其迅速解离和血浆在不同的电场值（E/N）的值下引起的血浆诱导的氧化和氧化。这将通过在具有物种形成测量的流动反应器中进行实验，并具有详细的等离子体和燃烧化学动力学的一维（1D）数值模拟；（ii）通过使用NH，NH2，NO和OH Planar Laser诱导的荧光（PLIF）（PLIF）和三维（3D）直接数字（DED NORMITIS模型）在模型（dnement of Plass）中，通过在模型的燃气涡轮机燃烧器中进行实验，对血浆动力学与火焰动态之间的相互作用（包括倾斜和热声燃烧不稳定性）进行了研究（DNS的模型）。实验性工作将由佐治亚州理工学院团队进行，数值工作将由明尼苏达大学团队进行。该奖项反映了NSF的法定任务，并认为值得通过基金会的知识分子优点和更广泛的审查标准通过评估来进行评估。