Results of a comprehensive study of thermophysical properties of hydrocarbons, oil, gas condensates and their processing products - Kalinigrad, 1993-2021
The paper presents the results of complex studies of thermophysical properties carried out in 1993-2021 by a Kaliningrad group of researchers under the guidance and with the direct participation of correspondingmember of the Russian Academy of Sciences B.A. Grigoriev. The research was carried out in two directions: thethermophysical properties of technically important oil hydrocarbons, and the thermophysical properties of oil, gascondensates, their technological fractions and commercial products. Concerning the rst case, the main outcomeconsisted of the individual multiconstant fundamental equations of state, describing with high accuracy allthermodynamic properties in the temperature range from the triple point to 700 K at pressures up to 100 MPa,as well as interpolation equations describing the dynamic viscosity and thermal conductivity in the same rangeof parameters. Twenty ve equations of state were obtained for n-alkanes, naphthenes, aromatic hydrocarbons,their halogen-substituted, aliphatic alcohols, also 22 interpolation equations were derived. Based on the obtainedequations, the scienti c group developed the tables of standard reference data, certi ed by the State Serviceof Standard Reference Data. For poorly studied hydrocarbons, two generalized equations of state have beendeveloped that described, respectively, the thermodynamic properties of n-alkanes and hydrocarbons with cyclicstructures in the molecule. Concerning the second case of studies, the main outcome represented the methods forcalculating various thermophysical properties for oil, gas condensates, and their technological fractions.