Study on the Characteristics of the Oil Shale and Shale Char Mixture Pyrolysis

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• 作者：Junwei Yan ; Xiumin Jiang ; Xiangxin Han
• 刊名：Energy & Fuels
• 出版年：2009
• 出版时间：December 17, 2009
• 年：2009
• 卷：23
• 期：12
• 页码：5792-5797
• 全文大小：815K
• 年卷期：v.23,no.12(December 17, 2009)
• ISSN：1520-5029

文摘

The pyrolysis experiments of the mixture fuels of Huadian oil shale and its shale char prepared at a retorting temperature of 520 °C were conducted using a Q5000IR thermogravimetric analyzer, and the characteristics of the copyrolysis at different mixing ratios were obtained. The release of organic matter tended to decrease while the decomposition of inorganic constituents tended to increase slightly with increasing shale char fraction. The interaction during the copyrolysis was investigated by comparing the experimental result with the theoretical one and only some little interaction was observed. The reactivity between 250 and 600 °C followed a decreasing trend with the increase of shale char fraction due to the lower volatile content and carbon condensation structures in shale char, and for each sample, the reactivity increased first and then decreased as the temperature increased because of the rearrangement of internal structure of sample particles. According to the kinetic analysis, increasing the shale char fraction in the mixtures would result in a decreasing apparent activation energy at temperatures ranging from 250 to 600 °C since the pyrolysis of shale char in this temperature range did not undergo the process of the decomposition of bitumen which existed in the pyrolysis of oil shale and needed much energy.