Effect of retorting temperature on product yield and characteristics of non-condensable gases and shale oil obtained by retorting Huadian oil shales

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• 作者：Sha Wang ; Xiumin Jiang ; Xiangxin Han ; Jianhui Tong
• 关键词：Oil shale ; Retorting temperature ; Non-condensable gases ; Shale oil ; Yield ; Characteristics
• 刊名：Fuel Processing Technology
• 出版年：May, 2014
• 年：2014
• 卷：121
• 期：Complete
• 页码：9-15
• 全文大小：608 K

文摘

Oil shale samples from Huadian were retorted in a stainless-steel cylindrical retort under argon atmosphere to determine retorting temperature effect on the product yield and characteristics of shale oil and non-condensable gases produced. Increasing temperature from 430 掳C to 520 掳C improved both oil and gas yields, but reduced the oil/gas yield ratio. Raising temperature increased nitrogen content in the derived shale oil and decreased the atomic H/C ratio and oxygen content, but had no significant effect on the sulfur content. It was also noticed that the boiling point of shale oil generated at 490 掳C was lowest, and the shale oils obtained at 430 掳C and 460 掳C showed similar boiling point distributions. The produced shale oils had similar atomic H/C ratio as well as higher light oil content compared to crude oils produced in China, and could be classified as sweet and high-nitrogen oil in terms of the classification method of crude oil. The oil derived at 490 掳C contained the lowest amount of saturates and the highest amount of aromatics, asphaltenes and non-hydrocarbons. C₁-C₄ hydrocarbon gas contents rose with increasing temperature. Higher ethene/ethane, propene/propane, butene/butane and alkene/alkane ratios obtained at higher temperature were linked to secondary cracking reactions.