Vol. 8 є 1, 2018 p 68-73

Pages

Article name, authors, abstract and keyword

68-73

Decrease of volume of oil products mixture during batching

Nikita N. Golunov a

a Gubkin Russian State University of Oil and Gas (National Research University), 65 Leninsky prospect, Moscow, 119991, Russian Federation

DOI: 10.28999/2541-9595-2018-8-1-68-73

Abstract: The article describes the problem of mixture formation during the consecutive pumping of light oil products through the same pipeline. It is known that when one oil product is displaced by another, a mixture is formed in the contact area of successively moving batches, which is, in general, a substandard product. Therefore, for many years the issue of reduction of the amount of substandard products stays an important task, attracting attention of the scientists. Since it is determined that the volume of resulting mixture depends on the intensity of convection processes and turbulent diffusion in the liquid flow within the pipe, a decrease in the hydraulic resistance, at least in the contact area of oil products, can help to reduce the volume of the mixture. It is shown that drag reducing additives, usually introduced into the flow of transported liquid, can be successfully used to reduce the amount of substandard mixture. The article gives the formulas for calculation of the factor of hydraulic resistance in a liquid flow with drag reducing additive, depending on the concentration of this additive, the Reynolds number and the relative equivalent roughness. The article describes the main points of drag reducing additive application for reduction of the volume of an oil product mixture by successive direct contact pumping.

Keywords: pipeline, oil products, batching, oil products mixture, longitudinal dispersion coefficient, mixture volume, hydraulic drag coefficient, drag reducing additive, decrease of mixture volume.

Reference for citing:
Golunov N. N. Decrease of volume of oil products mixture during batching. Naukatekhnol. truboprov. transp. neftiinefteprod. = Science & Technologies: Oil and Oil Products Pipeline Transportation. 2018;8(1):68Ц73.

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