Transformations of resins and asphaltenes during the thermal treatment of heavy oils

Changes in the properties and chemical structure of high-molecular-mass heteroatomic compounds (resins, asphaltenes) as a result of the thermal treatment of heavy oils from the Zuunbayan (Mongolia) and Usinsk (Russia) oil fields have been shown. The structural-group parameters of resins and asphalte...

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Bibliographic Details
Published in:Petroleum chemistry 2010-03, Vol.50 (2), p.106-113
Main Authors: Dmitriev, D. E., Golovko, A. K.
Format: Article
Language:English
Subjects:
Activation energy
Chemistry
Chemistry and Materials Science
Industrial Chemistry/Chemical Engineering
Oil fields
Pyrolysis
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Summary:Changes in the properties and chemical structure of high-molecular-mass heteroatomic compounds (resins, asphaltenes) as a result of the thermal treatment of heavy oils from the Zuunbayan (Mongolia) and Usinsk (Russia) oil fields have been shown. The structural-group parameters of resins and asphaltenes isolated from crude oils and their thermolysis products have been determined on the basis of elemental analysis, molecular mass, and 1 H NMR data. It has been shown that the yield of gaseous, liquid, and solid products varies depending on the thermolysis time and temperature. A model for the thermal conversion of the high-molecular-mass components of petroleum is proposed and the rate constants ( k ) and activation energies ( E ) of the petroleum thermolysis reactions have been calculated. The competing routes of the conversion of petroleum components at different temperatures have been established.
ISSN:0965-5441
1555-6239
DOI:10.1134/S0965544110020040