EAGER: Direct Upgrading and Stabilization of Pyrolysis Bio-Oil via Microwave-Induced Inverse Thermal Flux

EAGER：通过微波诱导逆热通量直接升级和稳定热解生物油

• 批准号: 1258821
• 负责人: Dorin Boldor
• 金额: $ 7.49万
• 依托单位: Louisiana State University Agricultural Center
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-15 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1258821&HistoricalAwards=false
• 关键词: EAGER; Direct; Upgrading; Stabilization; Pyrolysis

The promise of biomass-derived transportation fuels and specialty chemicals is basedon the premise that complex organic molecules in readily available biomass can be converted via a biochemical or thermochemical platform into much simpler molecular building blocks. However, the reality is that biochemical routes are not yet competitive in the commercial markets, while conventional thermochemical routes such as pyrolysis currently produce a low-quality, highly oxygenated bio-oil that is unstable due to the presence of reactive molecules and high acidity. In order to develop advanced biofuels and specialty chemicals, the pyrolysis oil needs to be upgraded and stabilized, usually employing high temperature and pressure reactors containing various catalyst beds. In the upgrading process, the unstable molecules have a great tendency to re-polymerize into higher molecular weight compounds, leading to catalyst instability and operational problems.Professor Dorin Boldor of Louisiana State University will test the hypothesis that a microwave heating system of high energy density with a well-controlled electromagnetic field distribution, when coupled with the proper upgrading catalyst choice can significantly increase the reaction rates and increase the catalyst usable lifetime by direct volumetric heating of the catalyst bed and therefore producing a bio-oil of superior quality compared to that obtained in conventional heating systems.For the development of a sustainable, renewable and reliable source of energy for our society, it is highly desirable to demonstrate a biomass process platform to produce a transportation fuel. The proposed research, if successful, achieves this goal by demonstrating a transformative technology for bio-oil upgrading, which can increase the lifetime of the catalysts and reduce operational costs.This is an EAGER topic in that there is no data to indicate this proposed plan will be successful. The microwave technology may have little impact on rates or on upgrading. It is conceivable that repolymerization is accelerated with greater catalyst instability. The successful completion of this research project will allow Boldor to acquire data in order to prove or disprove the likelihood of success. This data would then form the foundation of a further research program to elucidate the fundamental mechanisms behind the increased process performance at the gas-solid interface in the presence of microwave fields.The project will train a current PhD student in the PI?s lab from an underrepresented group. She will gain and master skills critically needed in the competitive labor market of the 21st century. To further increase the impact of the research, the knowledge developed will be incorporated in the ?Biofuels and Bioproducts from Renewable Resources? course taught by the PI, which includes a Service-Learning component in which students demonstrate projects developed in class (one of which is production of bio-oil via pyrolysis) to students enrolled in middle and high school science courses.

生物质衍生运输燃料和特种化学品的前景是基于这样一个前提，即随时可以获得的生物质中的复杂有机分子可以通过生物化学或热化学平台转化为更简单的分子构件。然而，现实情况是，生化路线在商业市场上还没有竞争力，而传统的热化学路线，如热解，目前产生的低质量、高含氧量的生物油，由于存在活性分子和高酸度而不稳定。为了开发先进的生物燃料和特种化学品，需要对裂解油进行升级和稳定，通常采用包含各种催化剂床的高温高压反应器。在升级过程中，不稳定的分子很容易再聚合成更高分子质量的化合物，导致催化剂不稳定和操作问题。路易斯安那州立大学的多林·博尔多教授将检验这样一个假设，即高能量密度的微波加热系统具有良好的电磁场分布，再加上适当的升级催化剂，通过直接对催化剂床层进行体积加热，可以显著提高反应速度，延长催化剂的使用寿命，从而产生比传统加热系统更高质量的生物油。为了为我们的社会开发可持续、可再生和可靠的能源，非常希望展示一种生产运输燃料的生物质处理平台。这项拟议的研究如果成功，将通过展示一种用于生物油升级的变革性技术来实现这一目标，该技术可以延长催化剂的寿命并降低运营成本。这是一个迫切的话题，因为没有数据表明这一提议的计划将会成功。微波技术可能对费率或升级几乎没有影响。可想而知，催化剂的不稳定性越大，再聚合速度越快。这一研究项目的成功完成将使博尔多公司能够获得数据，以证明或反驳成功的可能性。这些数据将构成进一步研究计划的基础，以阐明在微波场存在下气固界面过程性能提高的基本机制。该项目将从一个代表性不足的小组培养一名皮埃尔？S实验室的现役博士生。她将获得并掌握在21世纪竞争激烈的劳动力市场上至关重要的技能。为了进一步增加研究的影响，所开发的知识将被纳入来自可再生资源的生物燃料和生物制品？由PI教授的课程，其中包括一个服务学习部分，学生在其中向参加初中和高中理科课程的学生演示在课堂上开发的项目(其中之一是热解生产生物油)。

项目成果

Dielectric characterization of bentonite clay at various moisture contents and with mixtures of biomass in the microwave spectrum

• DOI: 10.1080/08327823.2017.1421407
• 发表时间: 2018-01-01
• 期刊: JOURNAL OF MICROWAVE POWER AND ELECTROMAGNETIC ENERGY
• 影响因子: 1.5
• 作者: Ellison, Candice;McKeown, Murat Sean;Boldor, Dorin
• 通讯作者: Boldor, Dorin

An evaluative comparison of lignocellulosic pyrolysis products derived from various parts of Populus deltoides trees and Panicum virgatum grass in an inductively heated reactor

• DOI: 10.1016/j.enconman.2018.06.026
• 发表时间: 2018-09
• 期刊: Energy Conversion and Management
• 影响因子: 10.4
• 作者: Dideolu J. Daniel;Candice R. Ellison;J. Bursavich;McKenna Benbow;Caroline Favrot;M. Blazier;C. Marculescu;S. Nokes;D. Boldor