Sulfur K-edge XANES study of sulfur transformation during pyrolysis of four coals with different ranks
文献类型：期刊论文
| ; | |
| 作者 | Wang, MJ; Liu LJ(刘利娟) ; Liu, LJ; Wang, JC; Chang, LP; Wang, H; Hu, YF
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| 刊名 | FUEL PROCESSING TECHNOLOGY
 ; FUEL PROCESSING TECHNOLOGY
|
| 出版日期 | 2015 ; 2015 |
| 卷号 | 131页码:262-269 |
| 关键词 | High sulfur coal Pyrolysis Sulfur form Release Inter-conversion X-ray absorption spectroscopy High sulfur coal Pyrolysis Sulfur form Release Inter-conversion X-ray absorption spectroscopy |
| ISSN号 | 0378-3820 |
| DOI | 10.1016/j.fuproc.2014.10.038 |
| 文献子类 | Article |
| 英文摘要 | Sulfur transformations during pyrolysis of four high sulfur coals with different ranks are studied by measuring the release of S-containing gaseous products using online gas chromatography with a flame photometric detector and analyzing the sulfur forms in raw coals and chars using sulfur K-edge X-ray absorption spectroscopy. Results show that the sulfur forms in different coals are different and they behave differently during pyrolysis. More active disulfide and sulfide in lower rank coal can be decomposed and released as gas products below 500 degrees C; while a more complex thiophenic structure in the higher rank coal is difficult to decompose even at 1000 degrees C. Decomposition of pyrite in coal plays an important role in sulfur transformation during pyrolysis of coals rich in pyritic-sulfur. Pyrite begins to convert to FeS above 300 degrees C; while FeS will also react with nascent char or volatiles above 600 degrees C. The inter-conversions among sulfur species in solid play a dominant role in the transformation of sulfur forms above 600 degrees C. The minerals in coal are valuable in understanding conversions of sulfate and sulfide. The sulfur retention in solid form is correlated well with the releasing trend of H2S and COS during the coal pyrolysis. (C) 2014 Elsevier B.V. All rights reserved.; Sulfur transformations during pyrolysis of four high sulfur coals with different ranks are studied by measuring the release of S-containing gaseous products using online gas chromatography with a flame photometric detector and analyzing the sulfur forms in raw coals and chars using sulfur K-edge X-ray absorption spectroscopy. Results show that the sulfur forms in different coals are different and they behave differently during pyrolysis. More active disulfide and sulfide in lower rank coal can be decomposed and released as gas products below 500 degrees C; while a more complex thiophenic structure in the higher rank coal is difficult to decompose even at 1000 degrees C. Decomposition of pyrite in coal plays an important role in sulfur transformation during pyrolysis of coals rich in pyritic-sulfur. Pyrite begins to convert to FeS above 300 degrees C; while FeS will also react with nascent char or volatiles above 600 degrees C. The inter-conversions among sulfur species in solid play a dominant role in the transformation of sulfur forms above 600 degrees C. The minerals in coal are valuable in understanding conversions of sulfate and sulfide. The sulfur retention in solid form is correlated well with the releasing trend of H2S and COS during the coal pyrolysis. (C) 2014 Elsevier B.V. All rights reserved. |
| 学科主题 | Chemistry; Energy & Fuels; Engineering ; Chemistry; Energy & Fuels; Engineering |
| 类目[WOS] | Chemistry, Applied ; Energy & Fuels ; Engineering, Chemical |
| 收录类别 | SCI ; EI |
| 电子版国际标准刊号 | 1873-7188 |
| WOS研究方向 | Chemistry, Applied ; Energy & Fuels ; Engineering, Chemical |
| 语种 | 英语 |
| WOS记录号 | WOS:000348881700032 ; WOS:000348881700032 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/228082]  |
| 专题 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Wang, MJ,Liu LJ,Liu, LJ,et al. Sulfur K-edge XANES study of sulfur transformation during pyrolysis of four coals with different ranks, Sulfur K-edge XANES study of sulfur transformation during pyrolysis of four coals with different ranks[J]. FUEL PROCESSING TECHNOLOGY, FUEL PROCESSING TECHNOLOGY,2015, 2015,131, 131:262-269, 262-269. |
| APA | Wang, MJ.,刘利娟.,Liu, LJ.,Wang, JC.,Chang, LP.,...&Hu, YF.(2015).Sulfur K-edge XANES study of sulfur transformation during pyrolysis of four coals with different ranks.FUEL PROCESSING TECHNOLOGY,131,262-269. |
| MLA | Wang, MJ,et al."Sulfur K-edge XANES study of sulfur transformation during pyrolysis of four coals with different ranks".FUEL PROCESSING TECHNOLOGY 131(2015):262-269. |
入库方式： OAI收割
来源：高能物理研究所
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