ABSTRACT Cleaning of coal resulted in ash reduction, heat value enhancement, increased reactive maceral content and change in ash composition influencing combustion performance. With washed fractions, trends of improved combustion behavior were observed in thermo-gravimetric analyser, which was not always reflected correspondingly in bench scale combustor, i.e. drop tube furnace (DTF). Lower burnout efficiency in DTF was observed when top port char particles were totally masked by defused mineral matter. Higher burnout efficiency was observed with tenui ballon/ sphere type of char structure partially covered by defused mineral matter. Overall improvement of combustion performance also led to CO2 emission reduction. GRAPHICAL ABSTRACT

中文翻译：

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TGA和滴管炉不同洗涤水平煤的燃烧行为研究

摘要 煤的清洁导致灰分减少、热值提高、活性物质含量增加和灰分组成的变化影响燃烧性能。对于洗涤的馏分，在热重分析仪中观察到燃烧行为改善的趋势，这并不总是相应地反映在实验室规模的燃烧器中，即下降管式炉 (DTF)。当顶部端口炭颗粒被融化的矿物质完全掩盖时，观察到 DTF 的燃尽效率较低。观察到部分被融化的矿物质覆盖的特努伊球/球型炭结构的燃尽效率更高。燃烧性能的整体改善也导致二氧化碳排放量的减少。图形概要