ABSTRACT

XPS, XRD, thermogravimetrc and a 300 kg coke furnace were combined to investigate the microscopic mechanism of four coking coals. The result illuminated that the maximum rate of weight loss SJ coal were superior to that of SM coal in the rapid pyrolysis stage. Moreover, the maximum rate of weight loss FM-1 coal were above the FM-2 coal in the rapid pyrolysis stage. Furthermore, the aromatic carbon and the aliphatic carbon content of SM coal exceeded that of SJ coal. However, the phenolic hydroxyl carbon and the ether carbon content of FM-1 coal were higher than FM-2 coal. It well demonstrated the difference of maximum rate of weight loss, weight loss and maximum temperature of weight loss between four samples. The quantity of the aromatic carbon, the phenolic hydroxyl carbon and the ether carbon affected the rapid pyrolysis and polycondensation reaction in the coking process. The mechanism of coke quality difference was attributed to various lattice spacing, stacking height and graphitization degree.

摘要

结合XPS、XRD、热重和300 kg焦炉，研究四种炼焦煤的微观机理。结果表明，在快速热解阶段，SJ煤的最大失重率优于SM煤。此外，FM-1煤在快速热解阶段的最大失重率高于FM-2煤。此外，SM 煤的芳香族碳和脂肪族碳含量超过了 SJ 煤。但FM-1煤的酚羟基碳和醚碳含量高于FM-2煤。很好地证明了四个样品的最大失重率、失重和最高失重温度的差异。芳香碳的数量，酚羟基碳和醚碳影响焦化过程中的快速热解和缩聚反应。焦炭质量差异的机理归因于不同的晶格间距、堆垛高度和石墨化程度。