Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9629195 | Fuel | 2005 | 4 Pages |
Abstract
A molar n-heptane programmed titration technique has been developed for evaluating the kinetics of n-heptane-induced asphaltene precipitation from three Saskatchewan crude oils during light hydrocarbon flooding. Results from the technique show that asphaltene precipitation kinetics can be modeled semi quantitatively in terms of a power law rate model. Values for the reaction order for n-heptane (35.8-43.3) were much larger than those for asphaltene (1.0-2.5) showing that asphaltene precipitation is more sensitive to the n-heptane added than the asphaltene content of the oil. Also, the large activation energies obtained (32-185Â kJ/mol) confirms experimentally that n-heptane asphaltene precipitation is not just a mere physical process.
Keywords
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Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Hussam H. Ibrahim, Raphael O. Idem,