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Chemistry and Technology of Fuels and Oils
Publisher: Consultants Bureau, An Imprint of Springer Verlag New York LLC.
ISSN: 0009-3092 (Paper) 1573-8310 (Online)
DOI: 10.1023/A:1016208518778
Issue: Volume 38, Number 3
Date:  May 2002
Pages: 171 - 177
Negative Viscosity Anomaly of Liquid Petroleum Products after Heat Treatment

I. N. Evdokimov1, D. Yu. Eliseev1 and N. Yu. Eliseev1

(1)  I. M. Gubkin Russian State University of Oil and Gas, Russia

Abstract  Heat treatment is a common method of improving the properties of heavy crude oils and petroleum products. Measurements showed for the first time that after heat treatment at 28—40°C, the rheological parameters of petroleum systems become much worse. The results obtained are important for improving shipping and storage technologies in conditions of periodic temperature drops. A theoretical explanation of these effects is given with consideration of the phase diagrams of petroleum systems and thermally induced changes in their colloidal structure.

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