Analytical Methods in Environmental Chemistry Journal
AMECJ

The Investigation of precision of analytical methods for determination of salt content in Iranian crude oils

Document Type : Original Article

Authors

Ali Asghar Pasban
Behrouz Nonahal
https://doi.org/10.24200/amecj.v1.i01.33
Abstract
In crude oil analysis, the determination of salt content is one of the most important parameters especially for refining and exporting industries. In this study, extraction followed by volumetric titration and electrometric procedure are performed for determining salt content for several Iranian crude oils. Also, the effects of disturbing agents such as increasing associated water for determining salt in crude oil were investigated for both methods. The results show when water content in crude oil is less than 0.05 weight percent, both methods are equally accurate for determining salt content, but when there is an increase in associated water content in crude oil, the electrometric method followed by volumetric titration method shows more accurate results in comparison with the extraction procedure.

Graphical Abstract

The Investigation of precision of analytical methods for determination of salt content in Iranian crude oils

Keywords

Salt content
crude oil
electrometric method
extraction
volumetric titration
A. Kamari, A.Bahadori, and A.H.Mohammadi, On the Determination of Crude Oils Salt Content: Application of Robust Modeling Approaches, J. Taiwan Institute Chem. Eng., 44(2015)27-35.
A.A. Pasban, S. Sadeghpour, M. Masoumi, and A.A.Miran Beigi, Acidity removal of Iranian heavy crude oils by nanofluid demulsifier: An experimental investigation, NanoAnalysis, 04 (2017) 112-118.
E. Elhaddad and M.E. Abdel-Raouf, New Model to Eliminate Salts from Sarir Crude Oil: a Case Study, Int. J. Eng. Res. Sci. Technol., 2 (2013)182-189.
U.B. Deshannavar, M.S,Rafeen, M.Ramasamy, and D,Subbarao, Crude oil Fouling:A Review, J. Appl. Sci., 10 (2010) 3167-3174.
J.J. Sheng, Investigation of alkalineecrude oil reaction, Petroleum, 1 (2015) 31-39.
C. Soltelo, A.Favela-Contreras,D. Sotelo,F. Beltran-Carajal, E.Cruz, Control Structure Design for Crude Oil Quality Improvement in a Dehydration and Desalting Process, Arab. J. Sci. Eng., 43 (2018) 6579-6594.
H. Kiani, Study of a crude oil desalting plant of the national Iranian south oil company in Gachsaran by using artificial neural networks, Chem. Mol. Nucl. Mater. Metall. Eng., 7(12), (2013) 670–673.
H.K Abdel-Aal., M.Aggour,M.A.Fahim,Petroleum and gas field processing, ASTM International, CRC Press, Florida, 2015.
M.R Riazi-Aal., S.Eser, S.S. Agrawal, and J.L.Pena Diez, Petroleum refining and natural gas processing, 2nd ed., Taylor and francis, PA, USA, 2013.
W. Y. Ayele, G. Juell-Skielse, A. Hjalmarsson, P. Johannesson, method for designing and refining digital Innovation contest measurement model, An Int. J. Inform. Technol., 11 (2018 ) 25-53.
ASTM D4006, Standard test method for water content in crude oil by distillation, Annual Book of ASTM standards, 05.01, USA, 2017.
ASTM D4007, Standard test method for water and sediment in crude oil by centrifuge method, Annual Book of ASTM standards, 05.01, USA, 2017.
ASTM D4007, Standard test method for water content in crude oil by potentiometric Karl Fischer method, Annual Book of ASTM standards, 05.01, USA, 2017.
IP 77, Determination of salt content- extraction and volumetric method, 2015.
ASTM D3230, Standard test method for salts in crude oil (electrometric method) Annual Book of ASTM standards, USA, 05.01, 2017.
ASTM D6560, Standard test method for determination of asphaltenes (heptanes insoluble) in crude petroleum and petroleum products, Annual Book of ASTM standards, USA, 05.02, 2017.
ASTM D664, Standard test method for acid number of petroleum products by potentiometric titration, Annual Book of ASTM standards, USA, 05.01, 2017.
Analytical Methods in Environmental Chemistry Journal
Volume 1, Issue 1
Autumn 2018
Pages 23-28