Liquid Fuel Reformation in Direct Droplet Impingement Microreactors

直接液滴撞击微反应器中的液体燃料重整

• 批准号: 0928716
• 负责人: Andrei Fedorov
• 金额: $ 28.57万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-15 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0928716&HistoricalAwards=false
• 关键词: Liquid; Fuel; Reformation; Direct; Droplet

0928716FedorovThis award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Objectives and Methods to be EmployedChemical processing frequently requires vaporizing liquid reagents, mixing, and heterogeneous reaction in the presence of a solid catalyst, followed by product separation. In traditional large scale chemical reactors each process is typically carried out in dedicated components, optimized for their given function, and linked together to form the overall system. Scaled down versions of these large-scale chemical plants have been considered for distributed applications, in particular hydrogen generation from hydrocarbon liquid feedstock, but the reactor design based on the individual unit operation approach has been shown to quickly become sub-optimal especially for space-constrained applications. To address this challenge of reactor scale-down, the concept of multifunctional reactors has emerged, in which synergistic combination of different unit operations is explored to achieve improved performance.The Direct Droplet Impingement Reactor (DDIR) is a new concept for multifunctional chemical processing of high energy density liquid fuels at very high rate, enabling development of high density power conversion technologies. This project focuses on establishing fundamental understanding of the complex interplay between the fuel delivery, evaporation, and reaction in DDIR reactors, resulting in an experimentally-validated methodology for optimal design and operation of this new class of reactors.Intellectual MeritNew theoretical and experimental tools will be developed to carry out a comprehensive study of the DDIR reactor concept. The following contributions are expected to result from the proposed investigation: (1) Theoretical analysis and simulations will yield the DDIR design map(s) that allow determination of optimal operating points using conversion rates and selectivity as performance metrics; (2) Theoretically-derived optimal design map(s) will be experimentally validated, demonstrating the predicted trends in DDIR reactor performance. The experimental validation will be instrumental in establishing a degree of confidence in extending the general theoretical framework developed to other reacting systems; and (3) Exploratory studies of the forced unsteady-state operation of the DDIR reactor will be undertaken, via experiments and simulations. It is conjectured that by changing these forcing time scales relative to the natural time scales of the system, improvements in time-averaged reactor performance may result.Broader ImpactsIf successful, this research could provide a significant benefit to society with potentiallytransformational benefits to a wide range of engineering applications, including development of a new reactor technology for portable and distributed power generation and efficient chemical processing for a broad range of liquid fuels, including renewable energy sources. This research will advance discovery and understanding while promoting teaching, training, and learning by incorporating the research results into several academic courses and through undergraduate research opportunities. Broadening of participation by underrepresented groups will be achieved by engaging graduate and undergraduate students from under-represented groups, including graduates of HBMUs: Clark Atlanta, Spellman, and Morehouse Colleges. The work will enhance the infrastructure for research and education by developing and maintaining facilities for MEMS fabrication and characterization at the PI's institution. Broad dissemination to enhance scientific and technological understanding will be achieved through several activities. First, active industry involvement will be facilitated to enable the transfer of research results into industry practice. Second, research results will be disseminated through technical papers and presentations in engineering forums, as well as special events that the PI will organize for local high school students.

0928716 Fedorov该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。目标和方法要采用化学加工经常需要蒸发液体试剂，混合，和在固体催化剂存在下的非均相反应，然后进行产品分离。在传统的大型化学反应器中，每个过程通常在专用组件中进行，针对其给定功能进行优化，并连接在一起以形成整个系统。这些大型化工厂的缩小版本已被考虑用于分布式应用，特别是从烃液体原料制氢，但基于单独单元操作方法的反应器设计已被证明很快变得次优，特别是对于空间受限的应用。为了应对反应器规模缩小的挑战，多功能反应器的概念应运而生。在多功能反应器中，不同单元操作的协同组合被探索以实现更好的性能。直接液滴撞击反应器（Direct Droplet Impacting Reactor，DCFR）是一种用于以非常高的速率对高能量密度液体燃料进行多功能化学处理的新概念，能够开发高密度功率转换技术。该项目的重点是建立对燃料输送、蒸发和反应之间复杂相互作用的基本理解，从而为这类新反应堆的优化设计和运行提供一种经过实验验证的方法。知识产权将开发新的理论和实验工具，以全面研究DALCOST反应堆概念。预计拟议的研究将产生以下贡献：（1）理论分析和模拟将产生DALVE设计图，允许使用转化率和选择性作为性能指标确定最佳操作点;（2）将通过实验验证理论推导的最佳设计图，证明DALVE反应器性能的预测趋势。实验验证将有助于建立一定程度的信心，在扩展到其他反应系统的一般理论框架开发;和（3）探索性研究的强迫非稳态操作的反应堆将进行，通过实验和模拟。它是adaptured，通过改变这些强制时间尺度相对于自然的时间尺度的系统，改善时间平均反应器的性能可能导致。更广泛的影响如果成功，这项研究可以提供一个显着的好处，社会与潜在的transformative好处，以广泛的工程应用，包括开发用于便携式和分布式发电的新反应堆技术以及用于广泛范围的液体燃料的有效化学处理，包括可再生能源。这项研究将推进发现和理解，同时促进教学，培训和学习，将研究成果纳入几个学术课程，并通过本科生的研究机会。代表性不足群体的参与将通过吸引代表性不足群体的研究生和本科生来实现，包括HBMU的毕业生：克拉克亚特兰大，斯佩尔曼和莫尔豪斯学院。这项工作将通过开发和维护PI机构的MEMS制造和表征设施来加强研究和教育的基础设施。将通过若干活动进行广泛传播，以提高对科学和技术的了解。第一，促进业界积极参与，将研究成果转化为业界实践。其次，研究成果将通过技术论文和工程论坛上的演讲以及PI为当地高中生组织的特别活动进行传播。