Abstract Mini-briquettes of three types were studied with respect to their influence on the changes in volume of the carbonized charge of an oxidized coal. The briquettes were prepared from the same coal with additives in the amount of 2 wt%. The loading of briquettes with coal pitch, novolac, and lignite into the charge reduced the increase in charge volume at the stage of grain swelling quadruple, thrice, and twice appropriately and led to formation of a more compact residue after coking. The pyrolysis of the studied coal with additives was carried out in a TG/FT-IR installation. It was established that the type of additive influences the composition of volatile products of pyrolysis. The densification of the blend of coal with additive reduces not only the yield of volatiles but also the contribution of saturated and unsaturated hydrocarbons in these volatiles. The SEM data show the presence of deposits of various shape in the material of the mini-briquettes with addition of pitch and lignite. The EDS results show that there are atoms of C, O, Fe, Ca, S, Mg, Al, and Cl present in the deposits. This implies that the inorganic species, which accumulate in the form of deposit during cooling, are present in the composition of volatiles emerging in the mini-briquettes with pitch and lignite. The results of XRD analysis prove that all additives facilitate a greater ordering of the structure of mini-briquette material.

中文翻译：

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压块对贮藏氧化烟煤热行为的影响

摘要 研究了三种类型的小型煤球对氧化煤碳化装料体积变化的影响。煤球由相同的煤制成，添加量为 2 wt%。将煤沥青、酚醛清漆和褐煤装入炉料中，适当减少了颗粒膨胀四倍、三次和两倍阶段的炉料体积增加，并导致焦化后形成更致密的残渣。研究煤与添加剂的热解是在 TG/FT-IR 装置中进行的。已确定添加剂的类型会影响热解挥发性产物的组成。煤与添加剂混合的致密化不仅降低了挥发物的产率，而且降低了这些挥发物中饱和和不饱和烃的贡献。SEM 数据显示在添加沥青和褐煤的小型煤球材料中存在各种形状的沉积物。EDS 结果表明，沉积物中存在 C、O、Fe、Ca、S、Mg、Al 和 Cl 原子。这意味着在冷却过程中以沉积物形式积累的无机物质存在于具有沥青和褐煤的小型煤球中出现的挥发物组合物中。XRD 分析的结果证明，所有添加剂都促进了小型团块材料结构的更大程度的有序化。SEM 数据显示在添加沥青和褐煤的小型煤球材料中存在各种形状的沉积物。EDS 结果表明，沉积物中存在 C、O、Fe、Ca、S、Mg、Al 和 Cl 原子。这意味着在冷却过程中以沉积物形式积累的无机物质存在于具有沥青和褐煤的小型煤球中出现的挥发物组合物中。XRD 分析的结果证明，所有添加剂都促进了小型团块材料结构的更大程度的有序化。SEM 数据显示在添加沥青和褐煤的小型煤球材料中存在各种形状的沉积物。EDS 结果表明，沉积物中存在 C、O、Fe、Ca、S、Mg、Al 和 Cl 原子。这意味着在冷却过程中以沉积物形式积累的无机物质存在于具有沥青和褐煤的小型煤球中出现的挥发物组合物中。XRD 分析的结果证明，所有添加剂都促进了小型团块材料结构的更大程度的有序化。存在于具有沥青和褐煤的小型煤球中出现的挥发物组合物中。XRD 分析的结果证明，所有添加剂都促进了小型团块材料结构的更大程度的有序化。存在于具有沥青和褐煤的小型煤球中出现的挥发物组合物中。XRD 分析的结果证明，所有添加剂都促进了小型团块材料结构的更大程度的有序化。