| 栲胶脱硫过程中单质硫生成机理 |
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| 引用本文： | 张卫帅,董跃,凌开成,李逢玲,王顺华,牛艳霞.栲胶脱硫过程中单质硫生成机理[J].洁净煤技术,2011,17(2):60-63. |
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| 作者姓名： | 张卫帅 董跃 凌开成 李逢玲 王顺华 牛艳霞 |
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| 作者单位： | 1. 太原理工大学化学化工学院,山西太原,030024
2. 太原理工大学环境科学与工程学院,山西太原030024;太原重工股份有限公司煤化工设备分公司,山西太原030024 |
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| 摘 要： | 采用循环伏安法研究了栲胶脱硫过程中HS-和V5＋之间的氧化还原反应。实验结果表明：在栲胶脱硫过程中,HS-和V5＋之间的反应有多硫离子Sx2-生成,多硫离子是反应过程中的活性中间产物,其进一步转化可生成单质硫S8。随着反应物V5＋浓度的增加,单质硫的生成速率增加。最后,提出了一种硫氢根HS-和V5＋反应生成单质硫S8的自由基机理。
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| 关 键 词： | 栲胶脱硫 多硫离子 单质硫 自由基机理 |
Formation mechanism of elemental sulfur in tannin extract desulfurization process |
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| ZHANG Wei-shuai,DONG Yue,LING Kai-cheng,LI Feng-ling,WANG Shun-hua,NIU Yan-xia.Formation mechanism of elemental sulfur in tannin extract desulfurization process[J].Clean Coal Technology,2011,17(2):60-63. |
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| Authors: | ZHANG Wei-shuai DONG Yue LING Kai-cheng LI Feng-ling WANG Shun-hua NIU Yan-xia |
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| Affiliation: | 1.College of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,China; 2.College of Environmental Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;3.Coal Chemical Equipment Subcompany,Taiyuan Heavy Industry Co.,Ltd.,Taiyuan 030024,China) |
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| Abstract: | The redox reaction between HS-and V5＋ in the process of tannin extract desulfurization was investigated by cyclic voltammetry（CV）.The results show that HS-is first oxidized to produce polysulfides（Sx2-） which is reactive intermediate product and will further transform to form elemental sulfur S8,and the production rate of elemental sulfur S8 increases along with increasing the concentration of V5＋.Additionally,a free radical reaction mechanism which describes the formation of elemental sulfur S8 from the redox reaction was proposed. |
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| Keywords: | tannin extract desulfurization polysulfide ion elemental sulfur free radical reaction mechanism |
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