Evaluation of Anacardium occidentale oil as an asphaltene flocculation inhibitor
DOI:
https://doi.org/10.29076/issn.2528-7737vol13iss34.2020pp59-71pKeywords:
Precipitation, asphaltene inhibitor, flocculation, Anacardium occidentaleAbstract
In the investigation, Anacardium occidentale seed oil (CNSL) was evaluated at laboratory level as an asphaltene flocculation inhibitor. Three mixtures of CNSL in Diesel (40, 60 and 80% V/V) were prepared and four doses (2, 4, 6 and 8 µL) were applied to 10 mL of an oil sample from El Furrial Field, Venezuela, as well as, pure diesel and oil, for a total of five products evaluated at the four doses. The response variable measured was the Asphaltene Flocculation Threshold (UF), as the volume of n-heptane applied to the oil until the formation of aggregates was observed under an optical microscope. The experimental design was factorial, with two experimental factors, Product and Dose, and a UF response variable, measured in triplicate for each product-dose combination. Factorial ANOVA and Fisher LSD test were applied with α = 0.05. It was obtained that the flocculation threshold was significantly dependent on the two factors (p < 0.05) and the presence of CNLS in the mixture produces an inhibitory effect, with a maximum efficiency of 43.6% for the product at 80% CNLS at a dose of 4 µL/10mL of oil.
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