The Study of Coprecipitation of Heavy Organics from Crude Oil

Enyindah Lawrence and Okah Reminus
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Enyindah Lawrence: Department of Science Laboratory Technology, Captain Elechi Amadi Polytechnic Rumuola, Port-Harcourt, Rivers-State, Nigeria
Okah Reminus: Department of Science Laboratory Technology, Captain Elechi Amadi Polytechnic Rumuola, Port-Harcourt, Rivers-State, Nigeria

International Journal of Research and Scientific Innovation, 2020, vol. 7, issue 6, 111-112

Abstract: Heavy organics exist in crude oil mixtures in various proportions. The separation of these four organics into four popular fractions; Saturates, Aromatics, Resins and Asphaltenes commonly referred to as SARA has been highlighted. Coprecipitation of heavy organics can occur due to the variation of factors such as temperature, pressure and composition in the oil fields. Such occurrence has been recognized to be the most problematic in the oil industries as it causes the plugging of pipelines and reservoirs, fouling of production facilities and poisoning of refinery catalysts. The role of solvent precipitation as a solution technique to heavy organic coprecipitation and deposition has been highlighted. A modified version of ASTM D6560 laboratory test method has been described for small scale coprecipitation of heavy organics. Usage of n-pentane (C5), n-octane (C8) , and n-dodecane (C12) as precipitating solvents showed that C5, C8, and C12 n-alkane solvents gave percentage precipitate yields of 9.11, 3.24 and1.28 respectively. The results showed that the quantity of precipitates decreased as the carbon number of the n-alkane solvents increased.

Date: 2020
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