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龙口页岩油中压加氢精制研究
唐勋,李术元,岳长涛,何继来
0
(中国石油大学重质油国家重点实验室,北京 102249;山东能源龙口矿业集团有限公司,山东龙口 265700)
摘要:
利用小型滴流床反应器和NiW/Al2O3商业催化剂对全馏分龙口页岩油进行中压(≤9MPa)加氢精制研究。考察反应温度、压力、液时空速和氢油比对加氢产物的硫含量、氮含量、密度、颜色和裂解程度的影响。结果表明:提高反应温度,降低液时空速,增大反应压力有利于加氢脱氮(HDN)反应进行;氢油比高于1000之后,增加氢油比对加氢脱硫(HDS)和HDN影响较小;当反应温度为420℃、压力为7MPa、液时空速为0.5h-1、氢油比为1000时,页岩油的脱硫率和脱氮率达到最高,分别为99.6%和99.9%;龙口页岩油加氢精制的最佳反应温度为400℃、压力为9MPa、液时空速为0.5h-1、氢油比为1000。
关键词:  全馏分页岩油  加氢精制  加氢脱硫  加氢脱氮  密度
DOI:10.3969/j.issn.1673-5005.2013.06.022
投稿时间:2013-08-12
基金项目:泰山学者建设工程专项(ts20120518);中国石油大学(北京)基本科研基金项目(KYJJ2012-06-32);国家重点基础研究发展计划(973)项目(2014CB744300)
Study on medium pressure hydrotreating of Longkou shale oil
TANG Xun,LI Shu-yuan,YUE Chang-tao,HE Ji-lai
(State Key Laboratory of Heavy Oil Processing in China University of Petroleum, Beijing 102249, China;Shandong Energy Longkou Mining Group Company Limted, Longkou 265700, China)
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 (vLHS) 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 vLHS and increase of temperature and pressure are beneficial for the hydrodenitrogenation (HDN) reaction. As the hydrogen-to-oil ratio exceeds 1000L/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 1000L/L. The optimal conditions for the hydrotreating of crude Longkou shale oil are 400℃, 0.5h-1, 9MPa, and 1000L/L.
Key words:  crude shale oil  hydrotreating  hyrodesulfurization  hydrodenitrogenation  density.
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