What causes the hydrogenated tail oil to be green in color?
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Dear marine friends, the color of the hydrogenated tail oil is green, and its sulfur and nitrogen levels are within acceptable limits. I would be very grateful if you could offer some advice. Thank you very much.
There are too many polycyclic aromatic hydrocarbons; what’s the BMCI value? Is it higher than before?
Why does the hydrogenated tail oil turn green when the BMCI value is high?
It is closely related to the aromatic content; an increase in polycyclic aromatics leads to a redder or darker color
It seems a Fangqian analysis is needed.
Has the content of unsaturated hydrocarbons increased, has the reactor space velocity increased, or has the catalyst performance declined?
It is caused by excessive hydrogenation, and the color is that of polycyclic aromatic hydrocarbons. The deeper the hydrogenation, the more severe the operating conditions, and the more colored substances are produced.
Thank you very much for your reply. Could you please explain the reaction mechanism? I would be extremely grateful.