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| Study on medium pressure hydrotreating of Longkou shale oil |
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TANG Xun1, LI Shu-yuan1, YUE Chang-tao1, HE Ji-lai2
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(1.State Key Laboratory of Heavy Oil Processing in China University of Petroleum, Beijing 102249, China;2.Shandong Energy Longkou Mining Group Company Limted, Longkou 265700, China)
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| Abstract: |
| The crude Longkou shale oil was hydrotreated in a bench-scale trickle-bed reactor with a commercial hydrotreating catalyst NiW/AlO2O3at medium hydrogen pressures (≤9MPa). The influences of pressure, temperature, liquid hourly space velocity (vLHS) and hydrogen-oil ratio on the sulfur content, nitrogen content, density, color and cracking degree of the product oils were investigated. The results show that decrease of vLHS and increase of temperature and pressure are beneficial for the hydrodenitrogenation (HDN) reaction. As the hydrogen-to-oil ratio exceeds 1000L/L, the effects of hydrogen pressure can be ignored. The highest degrees of hyrodesulfurization (HDS) and HDN, i.e. 99.6% and 99.9% respectively, are achieved at the condition of 420℃, 0.5h-1, 7MPa, and 1000L/L. The optimal conditions for the hydrotreating of crude Longkou shale oil are 400℃, 0.5h-1, 9MPa, and 1000L/L. |
| Key words: crude shale oil hydrotreating hyrodesulfurization hydrodenitrogenation density. |
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