Volume 7, Issue 1, March 2019, Page: 10-17
The Investigation of the Primary Corrosiveness of Crude Oils
Suresh Aluvihara, Department of Chemical and Process Engineering, University of Peradeniya, Peradeniya, Sri Lanka
Jagath K. Premachandra, Department of Chemical and Process Engineering, University of Moratuwa, Katubedda, Sri Lanka
Received: Dec. 18, 2018;       Accepted: Mar. 11, 2019;       Published: Mar. 25, 2019
DOI: 10.11648/j.mc.20190701.13      View  257      Downloads  38
Abstract
Crude oil is a mixture of hydrocarbons with some kinds of trace compounds including corrosive causing compounds. Corrosion is a severe consequence regarding the industry of crude oil refining. The scope of this research was to investigate the contributions of corrosive properties of both Murban and Das Blend crude oils on the corrosion rates of seven different types of ferrous metals which are obligatory in the crude oil refining industry. The sulfur contents, Mercaptans contents, organic acid contents and salt contents of both crude oils were tested by following the standard methodologies and recommended instruments. The elemental composition of each metal coupon was tested by the XRF detector. A batch of similar sized metal coupons was prepared and those metal coupons were immersed separately in both crude oils in homogeneous way. After 15, 30 and 45 days from the immersion the corrosion rates of each type of metal were determined by the relative weight loss method with the aid of a microscopic analysis. The decayed ferrous and copper concentrations in crude oil samples were tested by the atomic absorption spectroscopy (AAS) and the variations of the initial hardness of such metal coupons due to the corrosion were tested as confirmation stages of the formation of the corrosion. There were found some relatively lower corrosion rates from stainless steels with respect to both crude oils among other metals, higher corrosive impact from salts formations of FeS, Fe2O3 and some different trace compounds, higher ferrous and copper concentrations in some of crude oil samples and slight reductions of the initial hardness of most of metal coupons due to the corrosion as the foremost results of the existing research.
Keywords
Crude Oils, Corrosive Properties, Ferrous Metals, Weight Loss, Decay, Corrosion Rates
To cite this article
Suresh Aluvihara, Jagath K. Premachandra, The Investigation of the Primary Corrosiveness of Crude Oils, Modern Chemistry. Vol. 7, No. 1, 2019, pp. 10-17. doi: 10.11648/j.mc.20190701.13
Copyright
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Reference
[1]
O. P. Khana, Materials Science and Metallurgy, New Delhi: Dhanpet Rai and Sons publication, 2009.
[2]
T. A. Alsahhaf, A. Elkilani and M. A. Fahim, Fundamentals of Petroleum Refining, Amsterdam: Radarweg Press, 2010.
[3]
W. D. Calister, An Introduction of Materials Science and Engineering, NewYork: John Wiley and Sons, Inc, 2003.
[4]
M. E. Davis and R. J. Davis, Eds., Fundamentals of Chemical Reaction Engineering, New York: McGraw-Hill, 2003.
[5]
R. Singh, Introduction to Basic Manufacturing Process and Engineering Workshop, New Delhi: New Age International Publication, 2006.
[6]
W. Bolton, Eds., Engineering Materials Technology, London: B. H Newnes Limited, 1994.
[7]
H. A. Ajimotokan, A. Y. Badmos and E. O. Emmanuel, “Corrosion in Petroleum Pipelines,” New York Science Journal, vol. 2, no. 5, pp. 36-40, 2009.
[8]
J. G. Speight, Eds., The Chemistry and Technology of Petroleum, New York: Marcel Dekker, 1999.
[9]
G. A. Afaf, “Corrosion Treatment of High TAN Crude,” PhD. Thesis, University of Khartoum, Khartoum, Sudan, 2007.
[10]
G. C. Okpokwasili and K. O. Oparaodu, “Comparison of Percentage Weight Loss and Corrosion Rate Trends in Different Metal Coupons from two Soil Environments,” International Journal of Environmental Bioremediation & Biodegradation, vol. 2, no. 5, pp. 243-249, 2014.
[11]
A. D. Usman and L. N. Okoro, “Mild Steel Corrosion in Different Oil Types,” International Journal of Scientific Research and Innovative Technology, vol. 2, no. 2, Feb., pp. 9-13, 2015.
[12]
I. M. Ahmed, M. M. Elnour and M. T. Ibrahim, “Study the Effects of Naphthenic Acid in Crude Oil Equipment Corrosion,” Journal of Applied and Industrial Sciences, vol. 2, no. 6, Dec., pp. 255-260, 2014.
[13]
G. W. Luther and D. Rickard, “Chemistry of Iron Sulfides,” Chemical Reviews, vol. 107, no. 2, pp. 514-562, 2007.
[14]
H. Fang, S. Nesic and D. Young, “Corrosion of Mild Steel in the Presence of Elemental Sulfur,” presented at International Corrosion Conference and Expo, 2008.
[15]
G. M. Bota, S. Nesic, D. Qu and H. A. Wolf, “Naphthenic Acid Corrosion of Mild Steel in the Presence of Sulfide Scales Formed in Crude Oil Fractions at High Temperature,” presented at International Corrosion Conference and Expo, 2010.
[16]
M. Muller, “Theoretical Considerations on Corrosion Fatigue Crack Initiation,” Metallurgical Transactions, Vol. 13, pp. 649-655, 1982.
[17]
W. F. Smith, and J. Hashemi, Foundations of Material Science and Engineering, 4th Ed. New York: McGraw-Hill, 2006.
[18]
N. S. Hassan, “The Effect of Different Operating Parameters on the Corrosion Rate of Carbon Steel in Petroleum Fractions,” Engineering and Technology Journal, Vol. 31A, pp. 1182- 1193, 2013.
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