Study of the chemical nature of residual bitumen components from west Siberian petroleum
An urgent need for accurate information regarding the composition and structure of component molecules of heavy petroleum residues, has renewed interest in the chemistry of high molecular weight components (HMC) of petroleum and ensured a continuous improvement of the analytical techniques applied in this field. In view of the industrial importance of these residues, the present work is devoted to an investigation of the components of commercial residual bitumen (tar oil), obtained from an Omsk oil mixture of various West Siberian deposits. The residual petroleum produced by the Omsk NPK is a complex mixture of organic compounds of various classes (average MW 510-2190), which contains 62.5 wt% oils, 20.4% resins and 17.1% asphaltenes. The chromatographic separation developed enables the substances examined to be differentiated according to average MW, functional composition, aromaticity and structural features of the saturated molecular fragments. Chromatographic differentiation depends on the type of solvent used. Structural-group analysis established the main features of the carbon skeletons of the molecules of the high MW fractions. Specific features of all residual oil components, (with the exception of n-paraffins) are the presence of alicyclic systems, including molecules with aromatic and non-condensed nuclei with short highly branched aliphatic substituents. Naphthene structures, on the other hand, are common place in molecules of many resin fractions, but in some are replaced by long paraffin chains of linear or slightly branched structure. Various fragment combinations found in the molecules of asphaltenic substances are typical of residual oils and resins.
- Research Organization:
- Institute of Petroleum Chemistry, Tomsk, USSR
- OSTI ID:
- 6677967
- Journal Information:
- Pet. Chem. USSR (Engl. Transl.); (United States), Vol. 25:2; Other Information: Translated from Neftekhimiya; 25: No. 2, 322-332(1985)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AROMATICS
STRUCTURAL CHEMICAL ANALYSIS
CYCLOALKANES
PETROLEUM RESIDUES
CHEMICAL COMPOSITION
BITUMENS
EXPERIMENTAL DATA
RESINS
SIBERIA
ALKANES
ASIA
DATA
EASTERN EUROPE
ENERGY SOURCES
EUROPE
FOSSIL FUELS
FUELS
HYDROCARBONS
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
PETROCHEMICALS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
POLYMERS
TAR
USSR
023000* - Petroleum- Properties & Composition