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煤中形态硫分析及脱除能力研究
INVESTIGATIONS INTO ANALYSIS ANO DESULFURIZATION REACTIVITY OF SULFUR FORMS IN COALS
【摘要】 在实验室自动定硫仪上采用形态硫直接测定法,测定了7种煤样的脂肪硫、黄铁矿硫与噻吩硫的含量及它们脱除难易程度(能力),结果表明采用本实验方法测得的形态硫结果与X-射线吸收精细结构能谱(XAFS)所分析的结果一致。煤中形态硫在加热条件下脱除能力为:脂肪硫>黄铁矿硫>噻吩硫>硫酸盐硫,而在弱碱性氧化脱硫条件下各形态硫脱除能力为:黄铁矿硫>脂肪硫>噻吩硫>硫酸盐硫。
【Abstract】 The different sulfur forms of aliphatic、pyritic、thiophenic are determined and their desulfurization reactivity is examined in seven kinds of coals by direct determination of sulfur forms in coal in the laboratory automatic sulfur analyzer. The results given by this test method is almost same as that by sulfur K-edge X-ray absorption structure(XAFS)spectroscopy. Desulfurization reactivity of different sulfur forms in coals is aliphatic>pyritic>thiophenic>salfate under air heating, and pyritic>aliphatic>thiophenic>salfate under mildly alkaline oxydesulfurization.
【Key words】 organic; sulfur; sulfur forms analysis; desulfurization-reactivity;
- 【文献出处】 燃料化学学报 ,JOURNAL OF FUEL CHEMISTRY AND TECHNOLOGY , 编辑部邮箱 ,1996年02期
- 【分类号】TQ533.1
- 【被引频次】20
- 【下载频次】255