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首页> 外文期刊>Oil Shale >HYDROFLUORIC ACID-BASED ULTRASONIC UPGRADING OF OIL SHALE AND ITS STRUCTURE CHARACTERIZATION
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HYDROFLUORIC ACID-BASED ULTRASONIC UPGRADING OF OIL SHALE AND ITS STRUCTURE CHARACTERIZATION

机译：基于氢氟酸的油页岩超声升级及其结构特征

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摘要

The effect of hydrofluoric acid (HFA) on the upgrading and structure of oil shale from Yilan county, Heilongjiang province, China was investigated by the ultrasonic treatment of the shale in a mild water bath. The oil shale samples were characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF) and scanning electron (SE) microscopies, as well as Fourier transform infrared (FTIR) spectroscopy, and densimetry. The results of the study indicate that the HFA-based ultrasonic treatment exhibited a better performance in upgrading oil shale than the ordinaiy mechanical stirring method. It was also found that the concentration of HFA significantly influenced upgrading performance and the separation degree of inorganic minerals. The kerogen content in oil shale increased with increasing concentration of HFA. The total content of C, H, O and N in oil shale reached 98.2% when 40% HFA was used. Oil shale is composed mainly of a chainlike cyclic saturated organic material called kerogen, and inorganic minerals such as quartz, kaolinite, illite, siderite and pyrite. These materials integrate into a smooth lithified sandwich by the hydrogen bond and intermolecular forces. Via the ultrasonic treatment under mild conditions, kaolinite and siderite can be removed from oil shale with the use of a weak HFA, while a stronger HFA is needed to leach illite and quartz. Then kerogen with a loose porous structure is obtained.
机译：通过在温和的水浴中对页岩进行超声处理，研究了氢氟酸（HFA）对中国黑龙江省宜兰县油页岩升级和结构的影响。油页岩样品通过X射线衍射（XRD），X射线荧光（XRF）和扫描电子（SE）显微镜以及傅里叶变换红外（FTIR）光谱和密度法进行了表征。研究结果表明，基于HFA的超声处理比常规的机械搅拌方法具有更好的油页岩升级性能。还发现，HFA的浓度显着影响无机矿物的提质性能和分离度。油页岩中的干酪根含量随HFA浓度的增加而增加。当使用40％HFA时，油页岩中C，H，O和N的总含量达到98.2％。油页岩主要由称为干酪根的链状环状饱和有机物和石英，高岭石，伊利石，菱铁矿和黄铁矿等无机矿物组成。这些材料通过氢键和分子间作用力整合成光滑的片状夹心。通过在温和条件下进行超声波处理，可以使用弱HFA从油页岩中去除高岭石和菱铁矿，而浸出伊利石和石英则需要更强的HFA。然后获得具有疏松多孔结构的干酪根。

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