Thermal dissolution of Estonian oil shale |
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| Institution: | 1. Department of Civil and Structural Engineering, School of Engineering, Aalto University, PO Box 12100, FIN-02015 Espoo, Finland;2. College of Construction Engineering, Jilin University, Changchun 130026, PR China;1. College of Mining Engineering, North China University of Science and Technology, 063210 Tangshan, China;2. Tsinghua Innovation Center in Dongguan, 523808 Dongguan, China;3. School of Chemical Engineering & Technology, China University of Mining and Technology, 221008 Xuzhou, China;1. Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China;2. State Key Laboratory of Petroleum Resource & Prospecting, China University of Petroleum, Beijing 102249, China;3. Yanchang Petroleum (Group) Co., Ltd., Xi''an 710075, China;1. Institute of Energy, Peking University, Beijing 100871, China;2. Petroleum Exploration and Production Research Institute, Sinopec, Beijing 100083, China;3. Key Laboratory of Petroleum Resource, Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China |
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| Abstract: | The thermal dissolution of Estonian oil shale, kukersite and thermobitumen (TBO) formed, in the presence of solvents (benzene, ethanol, water and oil shale petrol) in autoclaves was studied. In all the solvents, except subcritical water, the total yield of benzene-soluble products, TBO, has a maximum (about 90%) at an optimum residence time and thereafter decreases due to coke formation. The formation of TBO from kukersite in supercritical water, ethanol and oil shale petrol is accelerated in comparison with low-temperature pyrolysis of kukersite without any solvent. The tests carried out with TBO without the mineral matter indicate deceleration of the coke formation in comparison with the initial kukersite. |
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