Characterization of a Novel Am Micromix Nozzle Burning Methane to Hydrogen

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Antoine Durocher, Luming Fan, Benjamin Francolini, Marc Furi, Gilles Bourque, Julien Sirois, David May, Jeffrey M. Bergthorson, Sean Yun, Patrizio Vena
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Abstract

Abstract As the energy landscape transitions to low/zero-carbon fuels, gas turbine manufacturers are targeting fuel flexible operation with natural gas, syngas, and hydrogen-enriched mixtures. Having a single geometry that can support different fuel blends can accelerate the transition to cleaner energy generation. Toward this goal, micromix combustion technology has received significant interest, and when coupled with additive manufacturing, novel injector geometries with unique configurations may be capable of stabilizing premixed, partially-premixed, and diffusion flames using fuel mixtures ranging from pure methane to pure hydrogen. In this work, a preliminary investigation of this micromix concept is performed in the Atmospheric Combustion Rig at the National Research Council Canada. Flame stability maps are obtained for fuel lean mixtures of H2/CH4 ranging from 0/100, 70/30, 90/10, to 100/0%, by volume. Multiple flame shapes are observed depending on the fuel mixture and combustion mode selected. PIV, OH, and acetone planar laser-induced fluorescence (PLIF), and acoustic measurements provide insights into the combustion process of these novel burners. The quality of the fuel-air mixing is assessed using acetone as a tracer for the fuel, while simultaneous OH-PLIF measurements provide an indication of the post-flame regions in the flow. Acoustic measurements complete the current dataset and provide combustion dynamics maps and the dominant acoustic frequencies. The preliminary characterization of this AM micromix nozzle shows promising fuel flexibility with wide stability margins and low combustion dynamics for this single nozzle burner.
一种新型甲烷制氢微混合喷嘴的表征
随着能源格局向低碳/零碳燃料的转变,燃气轮机制造商正在瞄准天然气、合成气和富氢混合物的燃料灵活运行。拥有一个可以支持不同燃料混合的单一几何结构可以加速向清洁能源发电的过渡。为了实现这一目标,微混合燃烧技术引起了人们的极大兴趣,当与增材制造相结合时,具有独特配置的新型喷嘴几何形状可能能够稳定使用从纯甲烷到纯氢的燃料混合物的预混、部分预混和扩散火焰。在这项工作中,在加拿大国家研究委员会的大气燃烧平台上对这种微混合概念进行了初步研究。获得了H2/CH4燃料稀薄混合物的火焰稳定性图,按体积计算范围为0/ 100,70 / 30,90 /10至100/0%。根据所选择的燃料混合物和燃烧方式,可以观察到多种火焰形状。PIV, OH和丙酮平面激光诱导荧光(PLIF),以及声学测量提供了对这些新型燃烧器燃烧过程的见解。使用丙酮作为燃料的示踪剂来评估燃料-空气混合的质量,同时OH-PLIF测量提供了流动中火焰后区域的指示。声学测量完成了当前的数据集,并提供了燃烧动力学图和主要的声学频率。该AM微混合喷嘴的初步表征表明,该单喷嘴燃烧器具有较宽的稳定裕度和较低的燃烧动力学,具有良好的燃料灵活性。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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