CAREER: SIMULATION AND DESIGN OF CHEMICAL-LOOPING COMBUSTION

职业：化学循环燃烧的模拟和设计

• 批准号: 1054718
• 负责人: Georgios Bollas
• 金额: $ 40万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-07-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1054718&HistoricalAwards=false
• 关键词: CAREER; SIMULATION; DESIGN; CHEMICAL; LOOPING

PI: Georgios Bollas Institution: University of ConnecticutProposal Number: 1054718Title: CAREER: Simulation and Design of Chemical-Looping CombustionThe objective of this research is to explore the real efficiency limits of chemical-looping (CL) combustion and reforming processes for power generation and/or hydrogen production with inherent CO2 capture, using fundamental models of state-of-the-art bench-, pilot- and commercial- scale plants. The work will explore the hypothesis that the real efficiency of chemical-looping can be optimized to exceed that of other options for CO2 capture. The key ideas are, (a) to combine experimentation, dynamic simulation and design optimization to optimize current and propose new experimental procedures for CL, and (b) to translate laboratory measurements into potential commercial and environmental benefits. This approach will provide theoretical insight to decoupling oxygen carrier reduction and oxidation kinetics from the operating particularities of current experimental techniques. A concept is to use optimal experimental design as a dynamic parameter estimation problem for identifying optimal operating conditions and unit designs for CL processes. The results will be implemented in research-based online educational materials to attract students to energy and environmental science and engineering.Research Approach: This research will focus on studying conceptual reactor designs that lead to chemical-looping processes of optimal selectivity and efficiency. Issues that will be addressed include the theoretical exploration of optimal continuous reactor designs for commercial applications, optimal batch experimental designs for materials testing in the laboratory, integration of CL in power generation processes and in refinery applications, and the adaptation of these concepts in the university curriculum. Optimal experimental design (OED) will be used to define reactor designs and operating conditions for studying oxygen carriers (and the effect of their properties, such as selectivity and hydrodynamic attributes) in laboratory-scale batch reactors. Bench-scale measurements at high pressure will be utilized to study potential integration of chemical-looping with existing coal gasification processes. The project is divided into five tasks: (1) development of reactor models of currently existing chemical-looping processes; (2) a Thermo-Gravimetric Analyzer (TGA) and a fixed bed reactor will be used to conduct kinetic measurements of metal oxidation and reduction reactions; (3) AspenONE models will be developed to examine the overall real efficiency of chemical-looping processes; and (4) and (5) dynamic models will be developed and utilized for optimal control and OED. User-friendly modules will be developed to integrate the results of this research into undergraduate and K-12 education.Intellectual Merit: The research involves developing comprehensive models for simulation of chemical-looping processes capable of producing energy and/or hydrogen with inherent CO2 capture. Modeling will aim at evaluating and exploring the existing chemical-looping processes and methods will be proposed for their optimization. Research results will aid in advancing the methodologies applied today and enhance understanding of the limitations of potential applications. This generic modeling capability will result in improving today?s experimental evaluation and tomorrow?s commercial performance of chemical-looping processes. New concepts include application of optimal experimental design on reactor design, power and hydrogen cogeneration and integration of chemical-looping into refinery and power generation infrastructures.Broader Impact: Fundamental understanding of the theoretical limits in chemical-looping will result in robust algorithms for the exploration of CL as a viable option for environmentally-friendly energy production. Optimal designs and operating conditions for CL processes aim at making power generation and hydrogen production from fossil fuels a cleaner process. Resolution of the major research challenges of this project, including the numerical complexity inherent in model-based design and control, will contribute significantly to future research on reactor and process design. The project will contribute to the education of graduate and undergraduate students, and will be integrated into online educational modules, to foster K-12 students interest in energy related science

主要研究者：Georgios Bollas机构：康涅狄格大学提案编号：1054718标题：职业生涯：模拟和设计的化学循环燃烧本研究的目的是探索真实的效率限制的化学循环（CL）燃烧和转化过程的发电和/或制氢与固有的二氧化碳捕获，使用国家的最先进的实验室，试点和商业规模的工厂的基本模型。这项工作将探讨的假设，即化学循环的真实的效率可以优化，超过其他选择的二氧化碳捕获。其核心思想是：（a）将联合收割机实验、动态模拟和设计优化相结合，以优化电流并提出新的CL实验程序;（B）将实验室测量结果转化为潜在的商业和环境效益。这种方法将提供理论上的洞察解耦氧载体还原和氧化动力学从目前的实验技术的操作特性。一个概念是使用最佳实验设计作为一个动态参数估计问题，以确定最佳的操作条件和单元设计的CL过程。研究结果将被应用到以研究为基础的在线教育材料中，以吸引学生学习能源和环境科学与工程。研究方法：本研究将重点研究概念反应器设计，从而实现最佳选择性和效率的化学循环过程。将解决的问题包括商业应用的最佳连续反应器设计的理论探索，在实验室中进行材料测试的最佳批量实验设计，CL在发电过程中的集成和炼油应用，以及这些概念在大学课程中的适应。最优实验设计（OED）将用于定义反应器设计和操作条件，以研究实验室规模的间歇式反应器中的氧载体（及其性质的影响，如选择性和流体动力学属性）。高压下的实验室规模测量将用于研究化学循环与现有煤气化工艺的潜在整合。该项目分为五项任务：（1）开发现有化学循环工艺的反应器模型;（2）将使用热重分析仪和固定床反应器对金属氧化和还原反应进行动力学测量;（3）将开发AspenONE模型，以检查化学循环工艺的总体真实的效率;以及（4）和（5）动态模型将被开发并用于最优控制和OED。将开发用户友好的模块，将本研究的结果整合到本科和K-12教育中。智力优势：该研究涉及开发用于模拟化学循环过程的综合模型，该过程能够产生能量和/或氢气，并具有固有的CO2捕获。建模的目的是评估和探索现有的化学循环过程和方法将提出其优化。研究结果将有助于推进今天应用的方法，并加强对潜在应用局限性的理解。这种通用建模能力将导致今天的改进？的实验评估和明天？的化学循环过程的商业性能。新的概念包括应用最佳实验设计的反应器设计，电力和氢气热电联产和集成的化学循环到炼油厂和发电infrastructures.Broader Impact：在化学循环的理论极限的基本理解将导致在强大的算法探索CL作为一个可行的选择，对环境友好的能源生产。CL工艺的优化设计和操作条件旨在使化石燃料发电和制氢成为更清洁的工艺。该项目的主要研究挑战的解决方案，包括基于模型的设计和控制中固有的数值复杂性，将大大有助于反应器和工艺设计的未来研究。该项目将有助于研究生和本科生的教育，并将整合到在线教育模块中，以培养K-12学生对能源相关科学的兴趣