Compositional Characteristics of Sulfur-Containing Compounds in High Sulfur Coals
Compositional Characteristics of Sulfur-Containing Compounds in High Sulfur Coals
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DOI：
10.1260/0144-5987.32.2.301
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发表时间：
2014-06
影响因子：
2.7
通讯作者：
Qiaojing Zhao;Yuegang Tang;Weiwei Li;Shaoqing Wang;X. Deng;Xiaolei Yu
中科院分区：
文献类型：
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作者：
Qiaojing Zhao;Yuegang Tang;Weiwei Li;Shaoqing Wang;X. Deng;Xiaolei Yu
采用索氏抽提、气相色谱和气相色谱-质谱联用技术对湖南辰溪、贵州贵定和山西河东3个煤田不同煤阶的高有机硫煤进行了地球化学研究。辰溪煤、贵定煤和河东煤的随机镜质组反射率分别为0.77%、1.29%和1.41%。有机硫含量分别为10.06%、10.26%和3.51%。So/St比值分别为95%、93%和87%。在煤中鉴定出三种类型的含硫化合物：二苯并噻吩系列、苯并萘并噻吩系列和苯并二苯并噻吩系列。贵定煤和河东煤中未发现苯并二苯并噻吩系列。随着煤阶的增加，二苯并噻吨系列的含量增加，而苯并萘噻吨系列的含量则呈下降趋势。取代基主要为甲基。成煤环境、有机硫含量和煤阶对有机硫化合物的类型有重要影响。
The geochemistry of high-organic-sulfur coals of different ranks from three coalfields in China, Chenxi, Hunan Province, Guiding, Guizhou Province, and Hedong, Shanxi Province have been studied using Soxhlet extraction, gas chromatography and gas chromatography-mass spectrometry. The random vitrinite reflectances of Chenxi, Guiding, and Hedong coals are 0.77%, 1.29% and 1.41%, respectively. Organic sulfur contents, on dry and ash-free basis, are 10.06%, 10.26% and 3.51%, respectively. The So/St ratio is 95%, 93% and 87%, respectively. Three types of sulfur-containing compounds were identified in coals, dibenzothiophene series, benzonaphthothiophene series, and benzobisbenzothiophene series. No benzobisbenzothiophene series was identified in the Guiding and Hedong coal. As the coal rank of a sample increased, so did the content of dibenzothiophene series; in contrast, the benzonaphthothiophene series showed a decreasing trend. The substituent group was mainly methyl. The coal-forming environments, organic sulfur contents and coal rank all played an important role in the types of organic sulfur-containing compounds.