COMBINED METHOD FOR ISOLATING C6-C8-AROMATIC HYDROCARBONS FROM MIXTURES WITH NON-AROMATIC HYDROCARBONS

COMBINED METHOD FOR ISOLATING C6-C8-AROMATIC HYDROCARBONS FROM MIXTURES WITH NON-AROMATIC HYDROCARBONS

FIELD: petroleum processing, petroleum chemistry. ^ SUBSTANCE: method involves extractive rectification of gasoline fraction and the following extraction of distillate with mixed solvent N-methylpyrrolidone - sulfolane. At stage of extractive rectification mixed solvent N-methylpyrrolidone - sulfola...

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Bibliographische Detailangaben
Hauptverfasser: KAJFADZHJAN E.A, SEMENOV L.V, FEDJANIN N.P, KOLDOBSKAJA L.L, GAJLE A.A, VARSHAVSKIJ O.M, KOSTENKO A.V, ZALISHCHEVSKIJ G.D
Format: Patent
Sprache:eng ; rus
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:FIELD: petroleum processing, petroleum chemistry. ^ SUBSTANCE: method involves extractive rectification of gasoline fraction and the following extraction of distillate with mixed solvent N-methylpyrrolidone - sulfolane. At stage of extractive rectification mixed solvent N-methylpyrrolidone - sulfolane containing 60-80 wt.-% of N-methylpyrrolidone is used, and at stage of extraction the same mixed solvent N-methylpyrrolidone - sulfolane containing 80-95 wt.-% of sulfolane is used. Method provides simultaneous isolation of highly purified aromatic (C6-C8)-aromatic hydrocarbons from gasoline fractions with the extraction degree 99.8%. ^ EFFECT: improved method for isolating. ^ 2 tbl, 1 ex