Basics of the Metallic Corrosion in Crude Oils (original) (raw)
Related papers
Study of the Effect of Crude Oils on the Metallic Corrosion
Advanced Journal of Graduate Research, 2018
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...
International Journal of Research, 2019
Crude oil is a predominant natural resource and also it causes the metallic corrosion in the industry of crude oil refining due to some corrosive properties of crude oils. In the current research, it is expected to investigate the effect of such compounds of crude oils on the rate of corrosion of seven different types of ferrous metals which are frequently used in the crude oil refining industries. The sulfur content, salt content, acidity, and mercaptans content of each crude oil are determined in order to use XRF analyzer, salt analyzer, and titration methods. A set of equal size metal pieces are immersed in both crude oils separately for 15, 30, and 45 days and their corrosion rates are determined by using relative weight loss after these time periods while observing the corroded metal surface under the optical microscope, and the dissolved metal concentration in each crude oil sample is tested by the AAS. The hardness of each metal piece is tested before and after the immersion ...
General Features of the Metallic Corrosion in Raw Crude Oils
Journal of Engineering Sciences, 2019
Raw crude oils are mainly composed of various hydrocarbons while having trace amounts of corrosive compounds such as sulphur compounds, naphthenic acids, and salts. In the existing research, there were expected to investigate the impact of such corrosive properties on the corrosion of seven different types of ferrous metals. As the methodology, the major corrosive properties of selected two different types of crude oils and the chemical compositions of seven selected metal types were measured and analyzed by the standard methodologies and recommend instruments. The corrosion rates of such metals were determined by the relative weight loss method after certain immersion time periods simultaneously with the microscopic analysis of corroded metal surfaces. In addition, the decayed metallic elemental concentrations from metals into crude oils were analyzed by the atomic absorption spectroscopy (AAS) and the impact of the corrosion on the initial hardness of metals were measured by the Vickers hardness tester. As the results and outcomes of the entire research that there observed relatively lower corrosion rates from stainless steels with at least 12 % of chromium and some amount of nickel, higher corrosive impact from salts on the metallic corrosion, formations of FeS, Fe 2 O 3 , corrosion cracks and pitting on the metal surfaces, decay of copper and ferrous from some of metals sometimes in significantly and small reductions of the initial hardness of most of metals due to the corrosion.
College & Research Libraries, 2019
Crude oils are dominant earth resources since composed with large number of hydrocarbons and some of trace compounds especially with corrosive compounds such as sulfur compounds, naphthenic acids and salts. In the current research the major scope was the investigations of the impact of such corrosive compounds on the corrosion of seven different types of ferrous metals in both qualitatively and quantitatively. According to the methodology such corrosive properties of two different types of selected crude oils were analyzed and the chemical compositions of seven different types of selected ferrous metals were detected by the standard methodologies and recommended instruments. The corrosion rates of such metals were determined by the relative weight loss method after certain immersion time periods in both crude oil samples while analyzing the corroded metal surfaces through a microscope. In addition that the decays of metallic elements from metals into crude oil samples were measured ...
The Strength of Corrosive Properties of Crude Oils on Ferrous Metals
EUREKA: Physics and Engineering, 2018
Crude oil is an unrivaled earth resource for the most of industrial applications. In the refining process of crude oil, ferrous metals play a severe role against the harsh environment while confronting adverse influences of crude oils such as the corrosion of ferrous metals. The formation of metal oxides, sulfides, hydroxides or any compound related with carboxylic group on the metal surface is known as the corrosion also mainly depends on the sulfur content, acidity, salt content and mercaptans content of relevant crude oils as well as the chemical composition of the metal. In this research it was expected to speculate the effect of such corrosive properties of Murban and Das Blend crude oils on seven different types of ferrous metals which are used in crude oil refining industry of Sri Lanka. The sulfur content, salt content, acidity and mercaptans content of each crude oil were determined by the succession of XRF analyzer, analyzer of salt and titration methods. A range of simila...
The Cause of Metallic Corrosion in Crude OilsFull Text
Chemical Engineering: An International Journal (CEIJ), 2017
Metallic corrosion is a severe interrogation regarding most of industrial applications of metals such as the industry of crude oil refining because of the foremost role of metals. The term of corrosion is usually explained as the formation of the metal oxide, sulfide, hydroxide or any compound related with a carboxylic group on the surface due to the impact of the surrounded conditions. The content of sulfur, acidity, mercaptans and salt content are the well ascertained corrosive properties of crude oils also the chemical composition of metals acquit oneself the fundamental preface for the corrosion. The surveillance of the comparison of corrosive capabilities of Murban and Das Blend crude oils in front of seven different types of ferrous metals that used in Sri Lankan refining industry was the dominant intention of this research. The chemical composition of used metals were determined by XRF detector while testing the contents of sulfur, acidities, contents of mercaptans and salt contents with respect to both crude oils simultaneously
The Investigation of the Primary Corrosiveness of Crude Oils
Modern Chemistry, 2019
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, Fe 2 O 3 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.
Possibility of the Metallic Corrsion in Crude Oils
2018
Metals play predominant prefaces regarding most of industrial components such as the crude oil refining industry although corrosion performed some banes. The formations of ferrous oxides, sulfides, hydroxides or certain chemical compound is the general definition regarding the corrosion. The rate of corrosion of a metal is regulated by the conditions of surrounding matter and chemical composition of such metal as well. In the current research it was expected to investigate to compare the effect of corrosive properties of two different crude oils on the rates of corrosion in seven different types of ferrous metals and their hardness. The contents of sulfur, mercaptans, organic acids and salt in both crude oils were determined by in order to XRF analyzer, titration methods and salt analyzer and also the chemical compositions of ferrous metals were determined by XRF detector. A batch of similar sized metal coupons was prepared and immersed in both crude oils separately. The corrosion r...