Tyumentsev M. S., Grigoriev A. V. (SPECTRON NPO Ltd., St-Petersburg) E-mail: firstname.lastname@example.org
Влияние механических примесей и воды на результат измерения массовой доли серы в нефти рентгенофлуоресцентным методом
Keywords: crude oil, sulfur fraction, inorganic solid particles and water in crude oil, energy dispersive X-ray fluorescence spectrometry.
Abstract. The petroleum refining industry requires an accurate sulfur content determination in crude oil which is often achieved by applying energy dispersive X-ray fluorescence spectrometry (EDXRF). This analytical method provides fast and precise determination of total sulfur content in crude oil and petroleum products. However, the presence of large quantities of inorganic solid particles and/or dispersed water in the crude oil samples to be analyzed may lower the results of sulfur content measurements.
It was established that a decrease of the results of sulfur content measurements in crude oil depends on the quantities of water and inorganic solid particles in the samples to be analyzed, and, to a large extent, on the position of a sample in the analyzer. The effects of these factors on the results of sulfur content measurements in the crude were assessed quantitatively. It was demonstrated that the sample-surface-side geometry of the analyzer is more efficient than the sample-surface-down geometry since it drastically reduces the adverse effects of water and inorganic solid particles on the results of sulfur content measurements in crude oil.
1. Speight J. G. Handbook of petroleum analysis. John Wiley & Sons. Inc., New York. – 2001.
2. Speight J. G. Handbook of industrial hydrocarbon processes. – Gulf Professional Publishing. – 2019. P. 382.
3. Matsumoto, S.I. (2004). ‘Recent advances in automobile exhaust catalysts’ // Catalysis Today, 90 (3-4), pp.183-190.
4. Xie, C., Chen, Y., Li, Y., Wang, X., Song, C. (2010). ‘Sulfur poisoning of CeO2–Al2O3-supported mono-and bi-metallic Ni and Rh catalysts in steam reforming of liquid hydrocarbons at low and high temperatures’ // Applied Catalysis A: General, 390 (1-2), pp. 210-218.
5. GOST 31378-2009. Crude petroleum. General specifications.
6. Novikov E. A. (2008). ‘Determination of sulfur in petroleum products. The review of the analytical methods’ // World of petroleum products. The herald of petroleum companies, 3, p. 27.
7. GOST 32139-2019. Petroleum and petroleum products. Determination of sulfur content by energy dispersive X-ray fluorescence spectrometry method.
8 . GOST R 50442-92. Petroleum and petroleum products. X-ray fluorescence method for determination of sulphur content.
9. GOST R 51947-2002. Petroleum and petroleum products. Determination of sulphur by method of energy-dispersive X-ray fluorescence spectrometry.
10. Sullivan A. P., Kilpatrick P. K. (2002). ‘The effects of inorganic solid particles on water and crude oil emulsion stability’ // Industrial & Engineering Chemistry Research, 41 (14), pp. 3389-3404.