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    张强, 钱亚平, 徐梦涵, 李伟锋, 刘海峰. 污泥与煤共气化过程中含磷化合物对硫元素释放规律的影响[J]. 华东理工大学学报(自然科学版), 2012, (5): 553-559.
    引用本文: 张强, 钱亚平, 徐梦涵, 李伟锋, 刘海峰. 污泥与煤共气化过程中含磷化合物对硫元素释放规律的影响[J]. 华东理工大学学报(自然科学版), 2012, (5): 553-559.
    ZHANG Qiang, QIAN Ya-ping, XU Meng-han, LI Wei-feng, LIU Hai-feng. Influence of Phosphorus Compounds on Sulfur Releasing during Coal and Sewage Sludge coGasification[J]. Journal of East China University of Science and Technology, 2012, (5): 553-559.
    Citation: ZHANG Qiang, QIAN Ya-ping, XU Meng-han, LI Wei-feng, LIU Hai-feng. Influence of Phosphorus Compounds on Sulfur Releasing during Coal and Sewage Sludge coGasification[J]. Journal of East China University of Science and Technology, 2012, (5): 553-559.

    污泥与煤共气化过程中含磷化合物对硫元素释放规律的影响

    Influence of Phosphorus Compounds on Sulfur Releasing during Coal and Sewage Sludge coGasification

    • 摘要: 考察了城市污泥与神府煤共气化过程中硫元素的挥发行为。结合X射线衍射(XRD)分析与热力学计算,讨论了含磷化合物对硫挥发行为的影响机理。实验结果表明:污泥中磷酸铝可与硬石膏发生反应,使混合物中硫元素在较低温度下挥发出来。当气化温度为900~1 200 ℃时,污泥对硫元素挥发比例影响最为显著。当气化温度为1 000 ℃时,含磷质量分数为0.5%与1.0%的污泥煤混合物中,硫元素挥发比例较神府煤分别上升了19.2%和35.5%。当气化温度高于1 300 ℃时,样品中大部分硫元素挥发出来,污泥对混合物中硫元素挥发比例影响不显著。

       

      Abstract: The volatilization of sulfur during cogasification process of sewage sludge with Shenfu coal was investigated. Influence mechanism of phosphorus compounds on sulfur releasing was discussed based on Xray diffraction (XRD) and thermodynamic calculation. The results show that aluminum phosphate from sewage sludge can react with anhydrite and then lead to the releasing of sulfur at low gasification temperature, especially between 900 ℃ and 1 200 ℃. Sulfur volatilization ratios of sludgecoal mixtures, which phosphorus mass fraction is 0.5% and 1.0%, are 19.2% and 35.5% higher than Shenfu coal respectively at 1 000 ℃. When temperature is higher than 1 300 ℃, most sulfur in mixtures volatilizes, and the influence of sewage sludge on sulfur volatilization ratio is not significant.

       

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