加压富氧燃烧是新一代的低能耗CO2捕集技术，也是最具工业化前景的燃煤电站碳捕集技术之一。本项目以“流化床加压富氧燃烧捕集CO2”为研究对象，拟围绕“碳组分演化的压力和氧浓度效应”、“燃烧特性与定向调控方法”、“关键装置放大与系统优化集成”等关键基础问题，在发展流态化反应动力学分析、分子动力学模拟、“湍流—离散颗粒团+化学反应”数值模拟等科学研究方法的基础上，重点开展煤颗粒/群的加压富氧燃烧动力学、流化床的加压富氧燃烧特性与定向调控机制、流化床加压富氧燃烧系统集成放大规律三方面研究内容，阐明流化床加压富氧燃烧过程中碳组分的演化机理和调控方法。本项目旨在发展高效、低能耗CO2捕集的流化床加压富氧燃烧理论与方法，促进新一代碳捕集技术前沿科学理论和设计优化方法的发展。依托单位具有30多年的加压流化床研究积累，申请团队在流化床等稠密气固反应系统的基础研究方面具有良好的基础，有望获得预期创新研究成果。

Pressurized oxygen-fuel combustion is a new generation of CO2 capture technology with low energy consumption, as well as one of the most promising carbon capture technologies for commercial applications in coal-fired power plants. Depending on the topic of “solid fuel combustion and its pollution and emission reduction mechanisms” from the Guide to Key Programs of National Natural Science Foundation of China, the current project is proposed to focus on the following key research issues including “Effects of pressure and oxygen concentration on the evolution of carbon component”, “Combustion characteristics and process directional controls”, “Key equipment scale-up and system optimization & integration” and so on. By means of developing various research approaches including the reaction kinetic analysis of fluidization progress, molecular dynamics simulation, “turbulent gas - discrete particles/particle clusters + reaction” simulation etc., the project will emphatically study the pressurized, oxygen-enriched or carbon-rich combustion kinetics of coal particle/particle clusters, the combustion characteristics and the process control mechanisms in pressurized oxygen-enriched fluidized beds, and the integration and scale-up laws of above systems, to finally elaborate the evolution mechanisms of carbon component and the related control methods in the pressurized oxygen-enriched processes. The aim of this project is to develop the theories and methods for pressurized oxygen-enriched fluidized beds to efficiently capture CO2, and boost the frontier science theories and optimization methods of the new carbon capture technology. With more than 30 years of study experience in pressurized fluidized beds from the supporting institution and the solid research foundation in various dense gas-solid reaction systems, the proposer team is capable of acquiring the expected innovative achievements.