EFRI-HyBi Green Aromatics by Catalytic Fast Pyrolysis of Lignocellulosic Biomass

【摘要】项目名称：George HuberInstitution: University of Massachusetts amherst提案号：0937895efrii - hybi绿色芳烃催化快速热解木质纤维素生物质该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的知识价值纤维素生物质由于其低成本，可持续生产和丰富，作为生产液体燃料的原料具有巨大的潜力。PIs最近开发了一种新的工艺，称为催化快速热解（CFP），将固体生物质直接转化为汽油范围内的芳烃。CFP的优点包括停留时间短（2-10秒），反应在一个步骤中发生，催化剂价格低廉，燃料产品已经适合现有的基础设施。该项目的目的是研究控制生物质转化为燃料的CFP的潜在物理和化学机制。CFP涉及在流化床反应器中将固体生物质直接转化为汽油级芳香族化合物。这个复杂的过程包括生物质颗粒的热分解，产生的气态物质的运输和颗粒周围气相的反应，以及沸石催化剂颗粒内部热解产物的运输和反应，以产生汽油范围的芳香族化合物。该过程的复杂性需要一种跨学科的方法，这将使我们更好地理解潜在的物理和化学现象，并导致精确的多尺度反应输运模型的发展，这些模型可用于指导反应堆的设计、扩大规模和优化。PIs已经组建了一个多学科的研究团队，包括催化、反应工程、理论化学、流体力学、气粒流、传热、热电联产和运输现象方面的专家，旨在了解生物质到燃料的CFP的基本机制。他们还将制定热电联产战略，将CFP过程与电力循环相结合，以最大限度地利用生物质原料的能量含量。他们提出了动力学和流体动力学实验的结合，这将使多尺度反应-输运模型的验证成为可能。这些模型将准确地表示发生在催化剂颗粒孔隙中的微观相互作用，并将它们与反应级的动量、能量和质量传递描述相结合。最终目标是开发更有效的催化剂和设计新的反应器，用于固体生物质的CFP燃料和热电联产。团队中的研究人员具有广泛的互补研究专业知识，可以有效地解决拟议项目的复杂性所带来的挑战。拟议的项目将生物燃料的研究与教育和推广相结合，旨在展示生物燃料和可再生能源领域工程的重要性。虽然人们普遍认为生物学和生物技术对生物燃料的生产至关重要，但催化和反应工程同样重要却鲜为人知。π吗?生物燃料的研究受到了媒体的广泛关注，并为教育公众提供了一个机会，激发了高中生追求科学和工程事业的兴趣。他们计划在他们的实验室里接待来自马萨诸塞州斯普林菲尔德地区高中的贫困学生，并与科学教师合作开发可持续能源的教学模块。他们还计划通过与麻省理工大学东北研究生教育和教授联盟（NEAGEP）合作，招募、指导和支持少数民族研究生，该联盟支持从科学、技术、工程和数学（STEM）领域代表性不足的人群中招募和指导博士生。

AbstractPI Name: George HuberInstitution: University of Massachusetts AmherstProposal Number: 0937895EFRI-HyBi Green Aromatics by Catalytic Fast Pyrolysis of Lignocellulosic BiomassThis award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)Intellectual Merit Cellulosic biomass has tremendous potential as a feedstock to produce liquid fuels due to its low cost, sustainable production and abundance. The PIs have recently developed a new process, called catalytic fast pyrolysis (CFP), to convert solid biomass directly into gasoline range aromatics. The advantages of CFP include short residence times (2-10 s), reaction that occurs in one single step, inexpensive catalysts, and fuel products that already fit into existing infrastructure. The objective of this project is to investigate the underlying physical and chemical mechanisms that control the CFP of biomass to fuels. CFP involves the direct conversion of solid biomass into gasoline-range aromatic compounds in a fluidized bed reactor. This complex process involves thermal decomposition of the biomass particles, transport of the resulting gaseous species and reactions in the gas phase surrounding the particles, and transport and reactions of the pyrolysis products inside the zeolite catalyst particles to yield gasoline-range aromatic compounds. The complexity of the process requires an interdisciplinary approach that will enable a better understanding of the underlying physical and chemical phenomena and lead to the development of accurate multi-scale reaction-transport models that can be used to guide reactor design, scale up, and optimization. The PIs have assembled a multi-disciplinary research team that includes experts on catalysis, reaction engineering, theoretical chemistry, fluid mechanics, gas-particle flows, heat transfer, cogeneration, and transport phenomena, aiming to understand the fundamental mechanisms underlying the CFP of biomass to fuels. They will also develop a cogeneration strategy that integrates a CFP process with a power cycle for maximum utilization of the energy content of the biomass feedstock. They propose a combination of kinetic and hydrodynamic experiments that will enable validation of multi-scale reaction-transport models. These models will accurately represent microscopic interactions occurring in the pores of catalyst particles and couple them to reactor-level descriptions of momentum, energy, and mass transport. The ultimate objective is to develop more efficient catalysts and design new reactors for CFP of solid biomass to fuels and cogeneration of electricity. The researchers in the team have a broad range of complementary research expertise to effectively address the challenges posed by the complexity of the proposed project. Broader Impacts The proposed program integrates research on biofuels with an educational and outreach component that are designed to demonstrate the importance of engineering in the area of biofuels and renewable energy. While it is generally accepted that biology and biotechnology are vitally important for biofuels production, it is less well known that catalysis and reaction engineering are equally important. The PIs? research on biofuels has received significant media attention and provides an opportunity to educate the public on the topic and excite interest in high school students to pursue careers in science and engineering. They plan to host in their laboratories underprivileged students from Springfield, MA, area high schools and collaborate with science teachers to develop teaching modules on sustainable energy. They also plan to recruit, mentor and support minority graduate students by collaborating with the Northeast Alliance for Graduate Education and the Professoriate (NEAGEP) at UMass, which supports efforts to recruit and mentor doctoral students from population groups that are underrepresented in science, technology, engineering, and mathematics (STEM) fields.