Study on Existence of Nickel and Vanadium in Tahe Crude Oil
Abstract: Tahe crude oil is catalogued into heavy crude oil with high density and viscosity, which contains much Ni and V. The present work studied the existence of Ni and V in Tahe crude oil by SARA, separation of asphaltene, extrac-tion and column chromatography. Experimental results indicate that, in Tahe crude oil, 94.28% of nickel and 92.14% of vanadium are concentrated in the asphaltene and resins, but 11.35% of nickel and 27.65% of vanadium exist as metal-loporphyrins, the rest exist as non-porphyrins. Meanwhile, most of vanadyl porphyrin are of the etioporphyrin (ETIO) type, with remaining fractions attributed to deoxophylloerythroetioporphyrin (DPEP) and benzo types. In addition, in the asphaltene, 40.91% of nickel and 43.85% of vanadium are concentrated in A1 that contains molecules having con-densed aromatic and naphthenic rings. It is proposed that A1 and A2 molecules form the asphaltene colloids in crude oil, where A1 is the colloidal core. Resins and aromatics as well as saturates entrapped asphaltenes in turn and formed gel-sol crude oil, which makes Ni and V difficult to remove in asphaltenes.
文章引用: 王一博 , 李龙 , 杨勇 , 任满年 , 曹发海 (2013) 镍和钒在塔河原油中存在状态的分析。 化学工程与技术， 3， 57-64. doi: 10.12677/HJCET.2013.32010
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