Integrated Experimental and Computational Studies Of MILD Oxy-Coal Combustion

轻度富氧煤燃烧的综合实验和计算研究

• 批准号: 1704141
• 负责人: James Sutherland
• 金额: $ 49.33万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-10-01 至 2022-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1704141&HistoricalAwards=false
• 关键词: Integrated; Experimental; Computational; Studies; MILD

1704141 Sutherland, James C.Oxy-coal combustion (OCC) is a viable technology that produces a concentrated carbon dioxide (CO2) stream suitable for sequestration. However, nearly all coal power plants in operation today, and most slated for construction, are air-fired power plants. Moderate and Intensive Low oxygen Dilution (MILD) combustion has been proposed as a technique to achieve higher combustion efficiencies, to produce higher uniformity in reaction zones, to reduce pollutant formation and to provide more uniform heat flux. This project aims to combine these two technologies and to investigate fundamental questions surrounding MILD oxy-coal combustion (MILD-OCC). Improved understanding of MILD-OCC can lead to viable retrofits or new designs for boilers that will not only improve efficiency but also provide sequestration-ready CO2 streams.This research is motivated by the hypothesis that simulation and experiments, analyzed together over a multi-scale range of conditions, can provide valuable insights into MILD-OCC systems. Such insights can be used to design cleaner, more efficient, and more reliable coal combustion systems. A multiscale, hierarchical approach will be undertaken whereby state of the art experiments obtained under well-controlled conditions can be used to study individual phenomena (particle ignition, char oxidation/gasification, etc.), and this understanding can be moved up-scale to more complex and practical systems. This research will combine existing experimental data of OCC with new data to be gathered at Tsinghua University on MILD-OCC systems and with multiscale modeling and simulation to improve understanding of MILD-OCC systems. The simulation and experimental work will be closely interwoven, with experimental results used to validate models and simulations used to guide experimental measurement needs. Additionally, focus on both instrument models (facilitating comparison between experiment and simulation) as well as techniques for upscaling models, beginning with high-fidelity models and coarsening to obtain models suitable for implementation, will be pursued. This award is co-funded by the CBET Environmental Sustainability program and the Office of International Science and Engineering.

1704141 Sutherland，James C.氧化 - 涂层燃烧（OCC）是一种可行的技术，可生产适合固换的浓缩二氧化碳（CO2）流。但是，当今几乎所有正在运营的煤炭发电厂，最计划建设的煤炭发电厂都是空气电厂。已经提出了中度和密集的低氧稀释（轻度）燃烧，作为达到较高燃烧效率的技术，以在反应区域产生较高的均匀性，以减少污染物的形成并提供更均匀的热量通量。该项目旨在结合这两种技术，并研究围绕轻度氧气燃烧（轻度OCC）的基本问题。对温和OCC的了解的提高可以导致可行的改造或锅炉的新设计，这些锅炉不仅可以提高效率，而且还提供了可隔离的二氧化碳流。这项研究的动机是通过在多尺度上进行分析的仿真和实验的假设。条件范围可以为轻度OCC系统提供宝贵的见解。这些见解可用于设计清洁，更高效，更可靠的煤炭燃烧系统。将采用一种多尺度的分层方法，在该方法中，在良好控制条件下获得的最先进的实验可以用于研究个体现象（粒子点火，炭氧化/气化等），并且可以将这种理解移动到上升到上限。更复杂和实用的系统。这项研究将将OCC的现有实验数据与新数据结合在Tsinghua University上，在轻度OCC系统以及多尺度建模和模拟中，以提高对轻度OCC系统的理解。模拟和实验工作将紧密地交织在一起，实验结果用于验证用于指导实验测量需求的模型和模拟。此外，将关注这两个仪器模型（促进实验和仿真之间的比较）以及高尺度模型的技术，从高保真模型开始，并将其变高以获得适合实施的模型。该奖项由CBET环境可持续发展计划和国际科学与工程办公室共同资助。

项目成果

Additional criteria for MILD coal combustion

• DOI: 10.1016/j.proci.2020.06.175
• 发表时间: 2020-08
• 作者: Hang Zhou;T. Ring;J. Sutherland

Characterization of temperature criteria using gas-phase fuel streams for MILD coal combustion

• DOI: 10.1016/j.fuel.2021.120445
• 发表时间: 2021-07
• 期刊: Fuel
• 影响因子: 7.4
• 作者: Hang Zhou;J. McConnell;T. Ring;J. Sutherland