CO emission should be reduced by the effective utilization of low-ranked coal in a coal-based power plant based on co-combustion of coal and biomass. This study investigated the co-combustion behavior of lignite and cow manure using three different kinds of samples: raw lignite coal blended with cow manure (CM-L), raw lignite coal blended with hydrochar derived from cow manure (HCM-L), and co-hydrothermal carbonization (Co-HTC) of lignite coal and cow manure (Co-HCML) using thermogravimetric analysis and a hydrothermal carbonization (HTC) temperature of 200 °C for 60 min. The kinetic parameters were calculated and analyzed using the Flynn-Wall-Ozawa and Kissinger-Akahira-Sunose methods. The combustion characteristics were studied of the various kinds of hydrochar mixed with lignite coal. The results showed that the low-ranked coal improved the fuel properties by increasing carbon content and decreasing sulfur through the HTC processes. The activation energy of Co-HCML was the lowest, which is preferable, and therefore it was recommended as the promising process.

中文翻译：

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低阶煤与牛粪氢炭混燃特性及动力学研究


以煤与生物质混燃为基础的燃煤电厂应通过有效利用低阶煤来减少CO排放。本研究使用三种不同的样品研究了褐煤和牛粪的混燃行为：原褐煤与牛粪混合（CM-L）、原褐煤与牛粪水炭混合（HCM-L）和使用热重分析和 200 °C 的水热碳化 (HTC) 温度对褐煤和牛粪 (Co-HCML) 进行共水热碳化 (Co-HTC) 60 分钟。使用Flynn-Wall-Ozawa 和Kissinger-Akahira-Sunose 方法计算和分析动力学参数。研究了不同种类的氢炭与褐煤混合的燃烧特性。结果表明，低阶煤通过 HTC 工艺增加碳含量并减少硫，从而改善了燃料特性。 Co-HCML的活化能最低，是优选的，因此被推荐为有前途的工艺。