Ionic liquid extraction as an effective alternative in the process of dearomatization of petroleum oils
Year: 2024
Type: article
Abstract: Rational use of petroleum products and environmental protection are considered problems of our time, the main solution to which is the eco-friendly way of extracting unwanted aromatic compounds from petroleum products and, in turn, their effective use in various fields. Ionic liquids, due to their unique complex properties, play a key role in the creation of clean technologies for refining petroleum products. The presented article gives the results of studies on the purification of transformer oil distillate T-1500 containing 24% mass of aromatic compounds in order to obtain a dearomatized product - raw material for the synthesis of synthetic naphthenic acids. The process of extracting aromatic hydrocarbons was carried out by the extraction method using ionic liquid - N-methylpyrrolidonium acetate - as an environmentally friendly solvent at a temperature of 60 °C and an extraction time of 1 hour, either in one stage with a ratio of oil distillate to ionic liquid equal to 1: 1÷3, so and stage by stage using equal amounts of extractant and distillate at each stage. The effectiveness of stage-by-stage ionic-liquid extraction purification of transformer oil and the possibility of obtaining dearomatized distillate with a degree of 87.5% mass and a yield of 70.15% mass of the target product during three-stage purification have been established. UV spectral analysis of the dearomatized oil in comparison with the original distillate showed a decrease in the content of benzene and phenanthrene derivatives by 7.4 and 12.3 times, respectively, and the complete removal of tricyclic aromatic hydrocarbons. Keywords: Ionic liquid; T-1500 transformer oil; aromatic hydrocarbons; purification by extraction method.
Authors: S. A. Seidova, M. D. Ibrahimov, V. M. Abbasov
Language: English
Subfield: Catalysis
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4406152100