Identification of Naphthenic Acids and Other Corrosivity-Related Characteristics in Crude Oil and Vacuum Gas Oils from a Mexican Refinery

Laredo, Georgina C.; López, Carla R.; Alvarez, Regina; Castillo, Jesús; Cano, José L.

doi:10.1021/ef034004b

Cited by 35 publications

(18 citation statements)

References 13 publications

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“…The early MS applications demonstrated that naphthenic acid distribution could be used as a fingerprint to correlate the sources of oils and source rocks. Likewise, FAB data of crude oil, light vacuum gas oil, and heavy vacuum gas oil were useful to better understand the link between naphthenic acids and the total acid number or corrosivity of refinery units (Laredo et al, 2004). The environmental importance of the MS applications was also evident at that time, as illustrated by the work of Wong et al (1996).…”

Section: A Early Historical Methodsmentioning

confidence: 99%

Mass spectrometric characterization of naphthenic acids in environmental samples: A review

Headley

Peru

Barrow

2008

Mass Spectrometry Reviews

151

124

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There is a growing need to develop mass spectrometric methods for the characterization of oil sands naphthenic acids (structural formulae described by C(n)H(2n+z)O(2) where n is the number of carbon atoms and "z" is referred to as the "hydrogen deficiency" and is equal to zero, or is a negative, even integer) present in environmental samples. This interest stems from the need to better understand their contribution to the total acid number of oil sands acids; along with assessing their toxicity in aquatic environments. Negative-ion electrospray ionization has emerged as the analytical technique of choice. For infusion samples, matrix effects are particularly evident for quantification in the presence of salts and co-elutants. However, such effects can be minimized for methods that employ chromatographic separation prior to mass spectrometry (MS) detection. There have been several advances for accurate identification of classes of naphthenic acid components that employ a range of MS hyphenated techniques. General trends measured for degradation of the NAs in the environment appear to be similar to those obtained with either low- or high-resolution MS. Future MS research will likely focus on (i) development of more reliable quantitative methods that use chromatography and internal standards, (ii) the utility of representative model naphthenic acids as surrogates for the complex NA mixtures, and (iii) development of congener-specific analysis of the principal toxic components.

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Section: A Early Historical Methodsmentioning

confidence: 99%

Mass spectrometric characterization of naphthenic acids in environmental samples: A review

Headley

Peru

Barrow

2008

Mass Spectrometry Reviews

151

124

View full text Add to dashboard Cite

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“…High acid crude oils (HACs) are defined as crude oils that have Total Acid Number (TAN) of more than 0.5 mg KOHg -1 oil and can go up to 8.00 mg KOHg -1 oil [1][2][3][4][5]. Total Acid Number (TAN) refers to the content of organic or inorganic acids presents in the crude oil and commonly defined as the amount of potassium hydroxide (KOH) in milligrams required to neutralize one gram of crude oil [6,7].…”

Section: Introductionmentioning

confidence: 99%

Behaviour of Ionic Liquid-Derived Naphthenate Salts Under Desalting Conditions

2021

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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%.

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“…[ [10][11][12] 3) el uso de solventes o soluciones para extraer la mezcla compleja de ácidos nafténicos. [13][14][15][16][17][18] Otros como: eliminación del agua en el crudo por rascado o deshidratación, uso de inhibidores de corrosión, biocidas para la prevención de la corrosión microbiana, estabilización del pH, etc.…”

Section: Introductionunclassified

Reducciã“n De La Acidez De Un Crudo De Petrã“leo Con Una Soluciã“n Alcohã“lica De Lãquido Iã“nico 2-Metilimidazol

Rivera-Barrera

Molina

2015

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*a quien debe dirigirse la correspondencia. RESUMENel objetivo de la investigación fue la reducción de la acidez de un crudo colombiano (número total de Ácidos -tan) de 4,9 mg KOH/ g Crudo) utilizando un líquido iónico formado in-situ con solución etanólica de 2-metilimidazol para extraer los compuestos ácidos. se realizó un diseño de experimentos 2[3] con un punto medio y por triplicado, cuyas variables independientes fueron: la relación crudo: reactivos, la relación entre reactivos (2-metilimidazol: etanol) y el tiempo; y la variable dependiente fue el porcentaje de reducción de la acidez.Las mejores condiciones para la mayor extracción de ácidos fueron: una relación entre crudo: reactivos de (1:0,2 p: p), una relación 2-metilimidazol: etanol al (20% peso/volumen), y un tiempo de agitación de 3 minutos. el máximo porcentaje de remoción de la acidez fue del 83%. el 2-metilimidazol demostró ser una base orgánica alternativa para la reducción de la mezcla ácida en el petróleo, sustituyendo a las bases inorgánicas comúnmente utilizadas que generan problemas como emulsiones y pérdidas de petróleo. el etanol fue un excelente solvente, debido a que la mezcla ácida fue soluble en él y no se perdió crudo en el proceso. Palabras claves:Crudo, Ácidos nafténicos, tan REDUCTION acidity of a crude oil with an alcohol ionic liquid 2-methylimidazole solution ABSTRACT the objective of the investigation was the reduction of the acidity of a Colombian crude (total acid number (tan) of 4,9 mg KOH/ g crude) utilizing an ionic liquid formed in-situ with ethanolic solution 2-methylimidazole to extract the acid compounds. experimental designs were realized 2[3] with a point and a half and triplicated whose independent variables were: relationship crude: reactives, in between reactives (2-methylimidazole: ethanol) and the period; the dependent variable was the percentage of the reduction of acidity.the best conditions for the majority acid extraction were: a relationship between crude: reactive (1: 0,2 w: w), a relation 2-methylimidazole: ethanol at (20% w/v), and an agitation period of 3 minutes. the maximum acidity removal percentage was 83%.the 2-methylimidazole demonstrated to be an alternative organic base for the reduction of the acidity mixture of oil, substituting the inorganic bases commonly utilized that generated problems like emulsions and loss of oil. the ethanol was an excellent solvent due to the acid mixture was soluble in it and there was no loss of oil in the process.

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Identification of Naphthenic Acids and Other Corrosivity-Related Characteristics in Crude Oil and Vacuum Gas Oils from a Mexican Refinery

Cited by 35 publications

References 13 publications

Mass spectrometric characterization of naphthenic acids in environmental samples: A review

Mass spectrometric characterization of naphthenic acids in environmental samples: A review

Behaviour of Ionic Liquid-Derived Naphthenate Salts Under Desalting Conditions

Reducciã“n De La Acidez De Un Crudo De Petrã“leo Con Una Soluciã“n Alcohã“lica De Lãquido Iã“nico 2-Metilimidazol

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Identification of Naphthenic Acids and Other Corrosivity-Related Characteristics in Crude Oil and Vacuum Gas Oils from a Mexican Refinery

Cited by 35 publications

References 13 publications

Mass spectrometric characterization of naphthenic acids in environmental samples: A review

Mass spectrometric characterization of naphthenic acids in environmental samples: A review

Behaviour of Ionic Liquid-Derived Naphthenate Salts Under Desalting Conditions

Reducciã“n De La Acidez De Un Crudo De Petrã“leo Con Una Soluciã“n Alcohã“lica De Lãquido Iã“nico 2-Metilimidazol

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Reducciã“n De La Acidez De Un Crudo De Petrã“leo Con Una Soluciã“n Alcohã“lica De Lãquido Iã“nico 2-Metilimidazol