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

2018 ◽  
Vol 1 (01) ◽  
pp. 23-28
Author(s):  
Ali Asghar Pasban ◽  
Behrouz Nonahal
Keyword(s):  
Crude Oil ◽  
Water Content ◽  
Salt Content ◽  
Extraction Procedure ◽  
Weight Percent ◽  
Crude Oils ◽  
Oil Analysis ◽  
Titration Method ◽  
Volumetric Titration

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.

Study of the Effect of Crude Oils on the Metallic Corrosion

2018 ◽  
Vol 5 (1) ◽  
pp. 43-54
Author(s):  
Suresh Aluvihara ◽  
Jagath K Premachandra
Keyword(s):  
Crude Oil ◽  
Sulfur Content ◽  
Salt Content ◽  
Ferrous Metal ◽  
Relative Weight ◽  
Oil Refining ◽  
Crude Oils ◽  
Hardness Tester ◽  
Corrosion Rates ◽  
Ferrous Metals

Corrosion is a severe matter regarding the most of metal using industries such as the crude oil refining. The formation of the oxides, sulfides or hydroxides on the surface of metal due to the chemical reaction between metals and surrounding is the corrosion that  highly depended on the corrosive properties of crude oil as well as the chemical composition of ferrous metals since it was expected to investigate the effect of Murban and Das blend crude oils on the rate of corrosion of seven different ferrous metals which are used in the crude oil refining industry and investigate the change in hardness of metals. The sulfur content, acidity and salt content of each crude oil were determined. A series of similar pieces of seven different types of ferrous metals were immersed in each crude oil separately and their rates of corrosion were determined by using their relative weight loss after 15, 30 and 45 days. The corroded metal surfaces were observed under the microscope. The hardness of each metal piece was tested before the immersion in crude oil and after the corrosion with the aid of Vicker’s hardness tester. The metallic concentrations of each crude oil sample were tested using atomic absorption spectroscopy (AAS). The Das blend crude oil contained higher sulfur content and acidity than Murban crude oil. Carbon steel metal pieces showed the highest corrosion rates whereas the stainless steel metal pieces showed the least corrosion rates in both crude oils since that found significant Fe and Cu concentrations from some of crude oil samples. The mild steel and the Monel showed relatively intermediate corrosion rates compared to the other types of ferrous metal pieces in both crude oils. There was a slight decrease in the initial hardness of all the ferrous metal pieces due to corrosion.

scholarly journals Determination of the vaporization order of crude oils through the chemical analysis of crude oil residues burned on water

Chemosphere ◽  
2021 ◽  
pp. 131563
Author(s):  
Laurens van Gelderen ◽  
Kristoffer Gulmark Poulsen ◽  
Jan H. Christensen ◽  
Grunde Jomaas
Keyword(s):  
Chemical Analysis ◽  
Crude Oil ◽  
Crude Oils

scholarly journals WEATHERING EXPERIMENT ON SPILLED CRUDE OILS USING A CIRCULATING WATER CHANNEL

1995 ◽  
Vol 1995 (1) ◽  
pp. 435-422 ◽  
Author(s):  
Tsutomu Tsukihara
Keyword(s):  
Crude Oil ◽  
Water Content ◽  
Sea Water ◽  
Water Channel ◽  
Crude Oils ◽  
Oil Emulsion ◽  
Circulating Water ◽  
Water In Oil Emulsion

ABSTRACT Crude oil spilled in the sea is mixed with the sea water by the wind and waves resulting in increases in its water content and viscosity as time passes. We have constructed a small, transfer type circulating water channel of an elliptical cuit-track form. Using an attached circulating unit, together with a war tunnel, artificial waves are generated to enable simulation corresponding to the natural circumstances in the sea. The experiment disclosed the following results.Drastic changes in the properties (water content and viscosity) of the oil depend on the power of waves.Contrasting processes are observed between heavy and light crude oils during weathering.Heavy crude oils form a massive water-in-oil emulsion (mousse) with increases in both water content and viscosity.Light crude oils behave differently at summer sea temperatures,

Bestimmung der Wasser- und Salzgehaltsverteilung durch Kombination von NMR- und γ-Durchstrahlungsmessungen / Determination of water and salt content distributions by means of combined NMR- and γ-transmission measurement

2000 ◽  
Vol 6 (4) ◽  
pp. 401-414
Author(s):  
A. Holm ◽  
H.M. Künzel
Keyword(s):  
Water Content ◽  
Gamma Ray ◽  
Content Distribution ◽  
Salt Content ◽  
Transport Processes ◽  
Salt Transport ◽  
Gamma Ray Attenuation ◽  
Saline Solutions ◽  
Non Destructive

Abstract When a masonry loaded with salt is exposed to natural weather conditions there are occurring two interdependent mechanisms of transport: moisture- and salt transport. For the purpose of investigating these coupled processes, the Fraunhofer- Institute of Building Physics developed a measurement technique which allows a non-destructive determination of both water content distribution and salt content distribution in capillary porous building materials. This system includes two different nuclear physical measurement procedures: Nuclear Magnetic Resonance (NMR) and gamma-ray attenuation. The NMR unit produces a signal that depends just on the number of protons in the specimen. Because of this, the water content of the specimen is linked to the signal of the NMR-measurement. During a gamma-ray attenuation measurement salt and water content distribution are gauged simultaneously. The larger the density of the measured specimen is, the stronger is the attenuation of the gamma-rays when they pervade the matter. By combining the results of these two measurement methods it is possible to determine the salt and water content distribution simultaneously in a non-destructive way. From this profiles it is possible to draw conclusions in respect of the occurring transport processes and the correlative parameters such as for example capillary transport coefficients and water absorption coefficients of salt loaded building material. These results yield the preconditions for first concrete basic approaches to describe the coupled moisture and salt transport and furthermore the influence of the salt on the moisture transport. Lately numerous absorption tests on Sander Sandstone were carried out. The specimens sucked saline solutions of different salts and concentrations. After defined time steps the profiles of water and salt content were measured. Furthermore tests during the drying period were preformed on specimens loaded with defined saline solutions.

The ICP-MS determination of rare earths and other metals in Baikal crude oil: Comparison with crude oils in Siberia and the Russian Far East

2006 ◽  
Vol 411 (1) ◽  
pp. 1237-1240 ◽  
Author(s):  
T. A. Yasnygina ◽  
Yu. M. Malykh ◽  
S. V. Rasskazov ◽  
S. P. Primina ◽  
T. I. Zemskaya ◽  
...  
Keyword(s):  
Crude Oil ◽  
Rare Earths ◽  
Russian Far East ◽  
Far East ◽  
Crude Oils ◽  
Icp Ms ◽  
The Russian Far East
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