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首页> 外文期刊>Journal of thermal analysis and calorimetry >Effects of minerals and Fe3+ on sulfur removal and its release behavior during coal pyrolysis under different atmospheres
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Effects of minerals and Fe3+ on sulfur removal and its release behavior during coal pyrolysis under different atmospheres

机译：Effects of minerals and Fe3+ on sulfur removal and its release behavior during coal pyrolysis under different atmospheres

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摘要

Yunnan anthracite coal (YN) with high FeS2, Pingshuo coal (PS) with high organic sulfur and Duerping coal (DEP) with 33.52% organic and 64.20% inorganic sulfur were selected to investigate the effects of minerals and Fe3+ on sulfur release behavior during coal pyrolysis under Ar and 3% O-2-Ar atmospheres by pyrolysis connected with gas chromatogram (Py-GC) combined with pyrolysis coupled with mass spectrometer (Py-MS). It is found that the sulfur removal ratios and the total amount of sulfur-containing gases release of coal samples under 3% O-2-Ar atmosphere are higher than those under Ar atmosphere, indicating that O-2 participates in coal pyrolysis process. The effects of minerals on sulfur removal are affected by these coals types. However, effects of Fe3+ on sulfur removal are related to atmospheres. During pyrolysis, Fe3+ is beneficial for all sulfur compounds to decompose at lower temperature under 3% O-2-Ar atmosphere, while inhibits sulfur removal under Ar atmosphere. The minerals in coals can absorb sulfur gases. However, Fe3+ can significantly promote COS and SO2 release at lower temperatures under both atmospheres. But Fe3+ inhibits H2S release under Ar atmosphere.

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