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.氧煤燃烧（OCC）是一种可行的技术，其产生适合于封存的浓缩二氧化碳（CO2）流。然而，几乎所有的燃煤发电厂在今天的运作，大多数预定建设，是空气动力发电厂。中等强度低氧稀释（MILD）燃烧已被提出作为实现更高燃烧效率、在反应区中产生更高均匀性、减少污染物形成和提供更均匀热通量的技术。该项目旨在将这两种技术联合收割机结合起来，并研究围绕MILD富氧煤燃烧（MILD-OCC）的基本问题。对MILD-OCC的进一步了解可以为锅炉带来可行的改造或新设计，不仅可以提高效率，还可以提供封存准备好的CO2 stream.This研究的动机是假设模拟和实验，在多尺度范围内的条件下一起分析，可以提供有价值的见解MILD-OCC系统。这些见解可用于设计更清洁，更高效，更可靠的燃煤系统。将采用多尺度、分层的方法，在良好控制的条件下获得的最先进的实验可用于研究个别现象（颗粒点火、炭氧化/气化等），并且这种理解可以被提升到更复杂和实用的系统。本研究将联合收割机现有的OCC实验数据与清华大学收集的MILD-OCC系统的新数据相结合，并结合多尺度建模和仿真，以提高对MILD-OCC系统的理解。模拟和实验工作将紧密交织在一起，实验结果用于验证模型，模拟用于指导实验测量需求。此外，还将侧重于仪器模型（便于实验和模拟之间的比较）以及升级模型的技术，从高保真模型开始，然后进行粗化，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