焦炭中硫的空间分布规律研究

采用炼焦混合煤模拟工业焦化过程，研究了焦炭中硫的空间分布规律。结果表明，焦炭柱同一高度的有机硫、无机硫的质量分数从中心到边缘逐渐升高；相同取样位置处裂纹表面的有机硫、无机硫比对应内部位置硫的质量分数高；对于炭化室直径为230mm的模拟实验，有机硫增加约0.035%，无机硫增加约0.08%。XPS分析显示，有机硫与无机硫的质量分数的差异是由噻吩硫及金属硫化物的质量分数不同造成的。二维相似模拟实验进一步证实焦炭柱中硫的质量分数从中心沿径向到边缘逐渐升高。

Study of sulfur dimensional distribution in coke

The rule of sulfur dimensional distribution in coke was studied by simulating the industrial coking process using coking coal. The result show that the content of organic sulfur and inorganic sulfur increases gradually from the center to the brim at the same height of the coke column. The content of organic sulfur and inorganic sulfur in the crack section is higher than that in the interior section at the same position. The increased quantity of organic sulfur and inorganic sulfur is about 0. 035% and 0.08% in the test with a diameter 230 mm coking reactor. XPS analysis shows that the different content of organic sulfur and inorganic sulfur is resulted from the different content of sulfide sulfur and thiophenic sulfur. The rule is approved further by the two-dimensional simulation experiment.