Rapid method for determination of group composition of malthenes in petroleum asphalt

Analysis of hydrocarbon solvents for the removal of various types of asphalt, resin and paraffin deposits

“…Study of the properties of asphalt, resin and paraffin deposits At the Gradient-M plant, the quantitative hydrocarbon composition of ARPD was determined by liquid-adsorption chromatography with gradient displacement, divided into seven groups: paraffin-naphthenic hydrocarbons, light, medium, heavy aromatic, resins I, resins II and asphaltenes [2] (Fig. 1(a)).…”

“…As a solvent desorption of asphaltenes, an eluent of chlorobenzene and ethanol was used. After the peak of asphaltenes appeared, the column was turned off [2].…”

“…The sum of the areas of all peaks on the cartogram is taken as 100 % and the content of each peak is calculated. To analyze and process the chromatograms, we used the Gradient program, which allows you to automatically calculate the percentage of hydrocarbon groups in the oil product [2].…”