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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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新峪焦精煤中硫在族组分间的赋存规律研究
, PP. 1286-1294
Keywords: 煤炭,硫,赋存,族组分
Abstract:
？为从煤的本体组成结构方面来阐述煤中硫的赋存与分布规律,以高含有机硫的新峪焦精煤为对象,采用萃取反萃取的煤全组分分离方法和xps、gc/ms等分析技术,对原煤和各族组分中的不同形态无机硫和有机硫含量进行了研究,重点考察了有机硫在煤有机质本体中的赋存规律.结果表明,无机硫的分布主要依赖于其自身在煤主体中的粒径大小和密度高低,与煤族组分本身结构关联较小.无论是原煤还是族组分,其有机硫均以噻吩型硫占主导;共轭结构为主的分子外环境,使共轭结构类有机硫的电子结合能降低,而使脂肪结构类硫的电子结合能升高,反之亦然.有机硫在煤中分布总体均衡,不会因为族组分结构不同而产生较大差异;但有机硫的类型硫赋存比例则与族组分本身的结构特征有所关联,不过其差别相对较小.轻质族组分中只含有一种有机硫小分子化合物,且相对丰度较小.
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