Could you please advise whether the differences in hydrocarbon components between the two diesel samples are significant?
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1# is the original second-line diesel, 4# is the treated sample; the testing was carried out by the Petroleum University. Diesel 1# Diesel 2# Alkanes 46.5 48.9 Monocycloalkanes 15.6 14.1 Dicycloalkanes 17.4 16.1 Tricycloalkanes 5.8 5.5 Total cycloalkanes 38.8 35.7 Total saturated hydrocarbons 85.3 84.6 Alkylbenzenes 5.0 5.1 Indanes or naphthalenes 2.2 2.4 Indenes 2.2 2.4 Total monocyclic aromatics 9.4 9.9 Naphthalene 0.1 0.2 Naphthenes 2.3 2.5 Acenaphthenes 1.3 1.3 Acenaphthylene 1.1 1.1 Total bicyclic aromatics 4.8 5.1 Tricyclic aromatics 0.5 0.4 Total aromatics 14.7 15.4 Please give some guidance.
Apart from a relatively greater decrease in total naphthenes, which may be due to ring opening and conversion into alkanes, there are no significant other changes; it seems that there are no differences in the hydrocarbon composition between the two oils. Any changes observed in the results can only be attributed to the ring opening of naphthenes into alkanes.
What the friend upstairs said about the open ring turning into an alkane – does that mean the chain of the cycloalkane has been broken? We hope to break long chains into short ones; can this result provide some confirmation?
Based on the data, it is not possible to determine whether naphthenes are opening up to form alkanes; it is possible that naphthenes are converting into both alkanes and aromatics, or that the naphthenes are removed by some means, resulting in an increase in both naphthenes and aromatics. It can only be determined by combining the principles of the treatment process with material balance calculations.
It’s likely that naphthenes can be converted into alkanes and aromatics
Reply 1# alexwan: The colority of the 1# sample oil should be better, and the stability of the entire sample should be superior to that of 2#