scholarly journals Evaluation of mineral oils as matrices for AISI/SAE–1020 steel naphthenic corrosion study

2021 ◽  
Vol 2118 (1) ◽  
pp. 012013
Author(s):  
G R Conde-Rodríguez ◽  
J A Sanabria-Cala ◽  
R A Mancilla Estupiñán ◽  
D A Laverde Cataño ◽  
M C Núñez Castañeda
Keyword(s):  
Crude Oil ◽  
Morphological Characterization ◽  
Naphthenic Acids ◽  
Operating Conditions ◽  
Crude Oils ◽  
X Ray Diffraction ◽  
Corrosion Study ◽  
Oil Reserves ◽  
Mineral Oils ◽  
Temperature Levels

Abstract Petrochemical industry has suffered great economic impact due to light crude oil reserves reduction, so refineries have been processing high acidity heavy crude oils. Studies of corrosion caused by naphthenic acids are interfered by presence of other corrosive agents contained in real crude oils, so naphthenic phenomenon must be isolated using synthetic crude oils. For this reason, in present work two high purity mineral oils were used to evaluate their efficiency as synthetic crude oil matrices in AISI/SAE–1020 steel naphthenic corrosion study. Temperature levels evaluated were 200 °C, 250 °C, and 300 °C, while exposure times evaluated were 5, 10 and 15 hours. Surface morphological characterization of AISI/SAE–1020 steel was carried out using scanning electron microscopy and X–ray diffraction. Gravimetric tests showed that AISI/SAE–1020 steel naphthenic corrosion rate increases with temperature and exposure time for one of the synthetic crude oils. However, results obtained for the other synthetic crude oil did not show increasing behaviour due to presence of sulfur traces in the oil, which caused an interference with AISI/SAE–1020 steel naphthenic corrosion study, reducing the reliability of gravimetric results so they cannot be extrapolated to operating conditions in distillation units.

The Effect of EOR Technologies on the Content of Petroporphyrins and Naphthenic Acids of Recovered Heavy Oils from Usinskoye Field

2015 ◽  
Vol 670 ◽  
pp. 39-43 ◽  
Author(s):  
Larisa D. Stakhina ◽  
Danil S. Petrenko ◽  
Adina S. Spabekova
Keyword(s):  
Crude Oil ◽  
Heavy Oil ◽  
Naphthenic Acids ◽  
High Density ◽  
Oil Field ◽  
Steam Treatment ◽  
Crude Oils ◽  
Heavy Oils ◽  
Oil Displacement

The effect of EOR technologies on the contents of petroporphyrins and naphthenic acids in recovered crude oil was studied using heavy oil from Usinskoye oil field (Republic Komi), which has high density, high content nickel and vanadium porphyrin complexes, the oxygen compounds and naphthenic acids. It is found that EOR system in combination with thermal steam treatment injection brings about an increase in the content of vanadium porphyrin complexes of crude oils. As a result of the oil-displacement EOR system injection, the naphthenic acids content would decrease in heavy oils.

scholarly journals Behaviour of Ionic Liquid-Derived Naphthenate Salts Under Desalting Conditions

2021 ◽  
Vol 287 ◽  
pp. 04002
Author(s):  
Azlan Shah Hussain ◽  
Poh Gaik Law ◽  
Jamali Basar
Keyword(s):  
Ionic Liquid ◽  
Crude Oil ◽  
Recovery Rate ◽  
Emulsion Stability ◽  
Operating Conditions ◽  
Permissible Limit ◽  
Stability Test ◽  
Crude Oils ◽  
High Recovery ◽  
High Recovery Rate

Pyrenees crude oil containing high napthenic acids (NAs) content of more than 1.6 mg KOH/g oil was treated with methyltrimethylammonium methylcarbonate [N4441][MeCO3] as to reduce its acidity to the refinery permissible limit of 0.3 mg KOH/g oil. The treated crude oils are subjected to Emulsion Stability Test (EST) as to mimic the operating conditions of a desalter. The results indicate the electrostatic conditions can facilitate the recovery of the napthenate salts post neutralization with high recovery rate of more than 79.6% with basic sediments & water (BSW) to be 1.96%. The conductivity of the treated crude oil also was found to increase as a function of temperature. The ionic liquid mediated-deacidification of crude oil can be performed under existing desalting conditions should the recovery of the naphthenate salts is acceptable at 70%.

THE EVALUATION AND DEVELOPMENT OF PASSIVE TAGGING PROCEDURES FOR THE IDENTIFICATION OF CRUDE OIL SPILLED ON WATER

1975 ◽  
Vol 1975 (1) ◽  
pp. 143-148
Author(s):  
G. Hunt ◽  
D. Horton ◽  
J. Levine ◽  
D. Mayo ◽  
D. Donovan ◽  
...  
Keyword(s):  
Crude Oil ◽  
Infrared Spectra ◽  
Oil Spills ◽  
Operating Conditions ◽  
Crude Oils ◽  
Preliminary Review ◽  
Ambient Conditions ◽  
The Law ◽  
Several Intervals

ABSTRACT Several off-the-shelf passive tagging techniques were used to evaluate the viability of Maine's Oil Conveyance Law to determine the origin of mystery oil spills. Duplicating the operating conditions of the law, ship's samples of all crude oil shipments received during a 15-day period at Portland Harbor were collected. Selected crude oils were subjected to weathering in 500-gallon tanks exposed to the outdoor ambient conditions of Portland, Maine. Subsamples of the weathering spill were taken at several intervals up to 15 days. Attempts were made to correctly match the weathered “unknown” to one of the collection of ships’ samples by passive tagging. Techniques employed included the comparison of gas chromatograms by several procedures, vanadium-nickel ratios, sulfur-nitrogen ratios, and infrared spectra. In a preliminary review of the data, successes and limitations are discussed.

Crude Oil Reserves

1958 ◽  
Vol 14 (3) ◽  
pp. 100-102
Author(s):  
Everett G. Trostel
Keyword(s):  
Crude Oil ◽  
Oil Reserves

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.

Catalytic Neutralization of Naphthenic Acid from Petroleum Crude Oil by Using Cerium Oxide Catalyst and 2- Methylimidazole in Polyethylene Glycol

2020 ◽  
Vol 13 ◽  
Author(s):  
Norshahidatul Akmar Mohd Shohaimi ◽  
Norfakhriah Jelani ◽  
Ahmad Zamani Ab Halim ◽  
Nor Hakimin Abdullah ◽  
Nurasmat Mohd Shukri
Keyword(s):  
Polyethylene Glycol ◽  
Crude Oil ◽  
Cerium Oxide ◽  
Active Sites ◽  
Naphthenic Acid ◽  
Naphthenic Acids ◽  
Catalyst Loading ◽  
High Concentration ◽  
Oil Refineries ◽  
Al2o3 Catalyst

: The presence of relatively high naphthenic acid in crude oil may contribute to the major corrosion in oil pipelines and distillation units in crude oil refineries. Thus, high concentration Naphthenic Acids crude oil is considered tobe of low quality and is marketed at lower prices. In order to overcome this problem, neutralization method had been developed to reduce the TAN value in crude oil. In this study, crude oil from Petronas Penapisan Melaka was investigated. The parameters studied were reagent concentration, catalyst loading, calcination temperature and reusability of the potential catalyst. Basic chemical used were 2- methylimidazole in polyethylene glycol (PEG 600) with concentration 100, 500 and 1000 ppm. Cerium oxide-based catalysts supported onto alumina prepared with different calcination temperatures. The catalyst was characterized by using Brunauer-Emmett-Teller (BET), Fourier Transform Infrared Spectroscopy (FTIR) and Thermogravimetry Analysis-Differential Thermal Gravity (TGA-DTG) to study physical properties of the catalyst. The Ce/Al2O3 catalyst calcined at 1000°C was the best catalyst due to larger surface area formation which lead to increment of active sites thus will boost the catalytic activity. The result showed that the Ce/Al2O3 catalyst meet Petronas requirement as the TAN value reduced to 0.6 mgKOH/g from original TAN value of 4.22 mgKOH/g. The best reduction of TAN was achieved by using catalyst loading of 0.39% and reagent of 1000 ppm.

scholarly journals Evaluation of the Different Compatibility Indices to Model and Predict Oil Colloidal Stability and Its Relation to Crude Oil Desalting

Resources ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 75
Author(s):  
Ivelina K. Shishkova ◽  
Dicho S. Stratiev ◽  
Mariana P. Tavlieva ◽  
Rosen K. Dinkov ◽  
Dobromir Yordanov ◽  
...  
Keyword(s):  
Crude Oil ◽  
Colloidal Stability ◽  
Crude Oils ◽  
Oil Blend ◽  
Light Medium

Thirty crude oils, belonging to light, medium, heavy, and extra heavy, light sulfur, and high sulfur have been characterized and compatibility indices defined. Nine crude oil compatibility indices have been employed to evaluate the compatibility of crude blends from the thirty individual crude oils. Intercriteria analysis revealed the relations between the different compatibility indices, and the different petroleum properties. Tetra-plot was employed to model crude blend compatibility. The ratio of solubility blending number to insolubility number was found to best describe the desalting efficiency, and therefore could be considered as the compatible index that best models the crude oil blend compatibility. Density of crude oil and the n-heptane dilution test seem to be sufficient to model, and predict the compatibility of crude blends.

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
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