Conversion Processes for High-Viscosity Heavy Crude Oil in Catalytic and Noncatalytic Aquathermolysis

We have conducted experiments on noncatalytic and catalytic aquathermolysis of high-viscosity heavy crude oil from the Ashal’cha field (Tatarstan) in the presence of a crude oil-soluble nickel- and cobalt-containing catalyst, a proton donor, and a rock-forming mineral. We have identified the charact...

Full description

Saved in:
Bibliographic Details
Published in:Chemistry and technology of fuels and oils 2014-09, Vol.50 (4), p.315-326
Main Authors: Petrukhina, N. N., Kayukova, G. P., Romanov, G. V., Tumanyan, B. P., Foss, L. E., Kosachev, I. P., Musin, R. Z., Ramazanova, A. I., Vakhin, A. V.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Cobalt
Geotechnical Engineering & Applied Earth Sciences
Industrial Chemistry/Chemical Engineering
Mineral Resources
Polymerization
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We have conducted experiments on noncatalytic and catalytic aquathermolysis of high-viscosity heavy crude oil from the Ashal’cha field (Tatarstan) in the presence of a crude oil-soluble nickel- and cobalt-containing catalyst, a proton donor, and a rock-forming mineral. We have identified the characteristic features of the change in the constituent composition, the hydrocarbon composition, and the fractional composition, the rheological properties of the crude oils, the average molecular weight of the asphaltenes for catalytic and noncatalytic conversion processes. For catalytic aquathermolysis, we established significant de novo formation of light 70°C-250°C fractions (by 23 wt.%), n-alkylbenzenes, an increase in the oil content by a factor of 1.3, a decrease in the resin content by a factor of 1.7, and a decrease in the viscosity by 98 rel.%. The major difference between the conversion of crude oil in the presence of the catalyst and the proton donor involves activation of degradation reactions at C–C, C–N, C–O, C–S bonds and blocking of polymerization reactions and accordingly less coke formation. We observed sorption of the catalyst components on rock.
ISSN:0009-3092
1573-8310
DOI:10.1007/s10553-014-0528-y