Published January 2020
Nitrogen containing oil compounds of Shirvan field
F.I. SamedovaThe paper presents the results of studying structural-group composition of basic character nitrogen compounds of Shirvan field oil. From Shirvan field’s oil is separated the concentrate of basic character nitrogen compounds with 25 % solvent of sulphuric acid in 70 % of vinegar acid as well. Obtained concentrate was underwent the chromatographic purification and division of narrow fractions on the active silica gel using as an eluent of various polarity: hexane, benzene, alcohol-benzene (1:1). Herewith, 70 % of nitrogen base were desorbed with hexane, 6.0 % - with benzene and 21.5 % - with alcohol benzene. Alcohol benzene fraction consisted predominantly from compounds with other heteroatoms in their molecules apart from O and S, i.e. from more complicated asphaltene-resin substances. Structural-group content of hexane and benzene fraction of nitrogen bases was studied via the proton-magnetic resonance method. Obtained results justified that the nitrogen bases of hexane extracts were enriched with paraffin radicals – substituents (Нparaffin=54.4) and consisted of the mixture of alkyl anilines, alkyl khinolines, alkyl acridines as well. In benzene extracts are dominant more condensed nitrogen containing arene structures НА=8.0, Нα=12.3 with isoparaffin substituent – radicals.
