超临界CO2与煤中有机物相互作用及对煤结构响应研究

As a result of the complex interaciton between supercritical CO2 and coal, understanding of coal structure damage mechanism and supercritical CO2 adsorption /desorption kinetics characteristics is not enough. With various rank coals interacted with supercritical CO2, using modern testing technology and methods combining with theoretical study, the coal structure response characteristics with the effect of supercritical CO2 on organic molecules of coal and supercritical CO2 adsorption /desorption kinetics experiment are studied. Based on surface chemical physics, adsorption science and coal chemistry etc, the coal structure response mechanism with the effect of supercritical CO2 on organic molecules of coal is revealed, the effect of mesoscopic structure change of coal on supercritical CO2 adsorption /desorption characteristics is studied, and the control mechanism of supercritical CO2 adsorption /desorption process is clarified. The physical and chemical structure evolution of coal and supercritical CO2 adsorption /desorption kinetics parameters would provide fundamental basis for the safe disposal of CO2 in deep coal seams and the prevention technology of coal and CO2 outbursts.

由于超临界CO2与煤之间相互作用的复杂性,使得超临界CO2对煤结构损伤机制及吸附/解吸动力学特性缺乏深刻认识。本项目以不同变质程度煤与超临界CO2相互作用为研究对象，采用现代分析测试技术和理论研究相结合的方法，开展超临界CO2与煤中有机物分子作用对煤结构响应及煤对超临界CO2吸附/解吸动力学特性研究。基于表面物理化学、吸附科学、煤化学等学科理论，揭示超临界CO2与煤中有机物分子间相互作用对煤结构响应机制，研究煤体细观结构变化对超临界CO2吸附/解吸动力学性能的影响，阐明超临界CO2吸附/解吸动力学过程的控制作用机理。获得煤物理化学结构演化规律及超临界CO2吸附/解吸动力学关键参数，为深部煤层CO2的安全处置及深入开展煤与瓦斯（CO2）突出防治技术提供理论基础。

由于超临界CO2与煤之间相互作用的复杂性,使得超临界CO2对煤结构损伤机制及吸附/解吸动力学特性缺乏深刻认识。本项目以不同变质程度煤与超临界CO2相互作用为研究对象，采用现代分析测试技术和理论研究相结合的方法，开展了超临界CO2与煤中有机物分子作用对煤结构响应及煤对超临界CO2吸附/解吸动力学特性研究。基于表面物理化学、吸附科学、煤化学等学科理论，揭示超临界CO2与煤中有机物分子间相互作用对煤结构响应机制，研究煤体细观结构变化对超临界CO2吸附/解吸动力学性能的影响，阐明超临界CO2吸附/解吸动力学过程的控制作用机理。获得煤物理化学结构演化规律及超临界CO2吸附/解吸动力学关键参数，为深部煤层CO2的安全处置及深入开展煤与瓦斯（CO2）突出防治技术提供理论基础。