通过预氧化技术，可以有效解决无烟煤燃尽率低和NOx生成量难以控制等问题。然而，该技术仍面临着预处理阶段结构氮析出量低、析出路径随机和半焦反应性衰减等问题。本项目提出通过O2/H2O预氧化及金属元素加载来优化无烟煤的燃烧过程。本项目的创新之处在于：通过氧气和水蒸气的协同活化作用，提高预氧化阶段结构氮的定向剥离效率，并对气态产物的生成路径进行诱导；深度挖掘氧气和水蒸气对含氮气态产物前驱体赋存形态的调控机制，对半焦燃烧阶段氮元素的释放路径进行干预；利用金属元素与氧化剂协同强化稠环芳香结构的反应活性；利用水蒸气诱导半焦表面CO前驱体的生成和富集，强化半焦的NO还原能力；通过加载微量金属元素的方式来定向降低半焦与NO的反应能垒，强化燃烧气氛下半焦对NO的还原倾向性。相关研究有望为进一步优化无烟煤清洁高效燃烧技术提供理论基础。

The pre-oxidation technology can effectively solve the problems of low burnout rate and massive NOx emission in anthracite combustion. However, this technology still suffers from low efficiency of nitrogen stripping in the pre-treatment stage, random emission pathway of nitrogen content, and loss of semi-coke reactivity. This project proposes to optimize the combustion process of anthracite through O2/H2O pre-oxidation and alkali metal loading. The innovations of this project are: through the synergistic activation of oxygen and water vapor, the directional stripping efficiency of structural nitrogen in the pre-oxidation stage tend to be improved, and the generation pathway of gaseous products will be induced; excavating the regulation mechanism of oxidants on the chemical structures of precursors of nitrogen containing gases, as well as, inducing the emission pathway of nitrogen in the semi-coke combustion stage; propose the use of metal elements and oxidants to synergistically enhance the reactivity of fused ring aromatic structures; employing water vapor to induce the formation and enrichment of CO precursors to strengthen NO reduction ability of semi-coke. loading metal elements on coke particles to selectively reduce the energy barrier of coke-NO, and effectively enhance the NO reduction tendency of coke in a combustion atmosphere. The relevant results are promising to provide theoretical guidance for further optimizing the clean and efficient utilization technology of anthracite.