Naphthenic acid removal from crude oil through catalytic decarboxylation on magnesium oxide

Zhang, Aihua; Ma, Qisheng; Wang, Kang-Shi; Liu, Xicai; Shuler, Patrick; Tang, Yongchun

doi:10.1016/j.apcata.2006.01.038

Cited by 113 publications

(60 citation statements)

References 14 publications

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“…The liquid-liquid extraction (LLE) and adsorptive recovery using ion exchange is a widely used laboratory method for recovery of naphthenic acid from crude oil [4,5]. Acidity reduction for highly acidic crude is achieved using thermal and catalytic decarboxylation [6,7]. The catalytic esterification using SnO/Al 2 O 3 had been used for crude oil as well as for the diesel streams [8,9].…”

Section: Introductionmentioning

confidence: 99%

Extraction of naphthenic acid from highly acidic oil using phenolate based ionic liquids

Shah

Lethesh

Gonfa

et al. 2016

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

Extraction of naphthenic acid from highly acidic oil using phenolate based ionic liquids

Shah

Lethesh

Gonfa

et al. 2016

Chemical Engineering Journal

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“…En la Tabla 2 se muestran diferentes compuestos que se han utilizado para la extracción de ácidos nafténicos. [25][26][27] el naOH es una base ampliamente utilizada para neutralizar ácidos carboxílicos y reducir la acidez en crudos, pero genera emulsiones y por lo tanto pérdidas de crudo, además no se puede recuperar y reutilizar. Tabla 1.…”

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

revfue

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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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“…The success of zeolites [12] and metal oxides [19] for deacidiication of crude oil is high. But the process still requires moderately high operating temperatures (300-400°C).…”

Section: Introductionmentioning

confidence: 99%

Total Acid Number Reduction of Naphthenic Acids Using Supercritical Fluid and Ionic Liquids

Mandal¹,

Sasaki²

2018

Recent Insights in Petroleum Science and Engineering

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Naphthenic acids (NAs) are complex mixture of predominately alkyl-substituted cycloaliphatic carboxylic acids and small amount of acyclic acids present in crude oil, heavy oil and in oil sands bitumen. They are toxic components in reinery wastewater and in oil sand extraction water and lead to corrosion problems within the oil reineries. Therefore, the amount of NAs needs to suppress in petroleum oils and wastewater came from petroleum industry. This paper reviews the supercritical luids (SCFs)-and ionic liquids (ILs)-based acidity reduction process from heavy oils by reviewing open literature. The potential beneits of SCFs-and ILs-based acidity reduction process of heavy oils are also explored. The reviewed articles reveal that total acid number (TAN) removal increase with increasing reaction time and temperature by the action of SCF. Supercritical methanol (SC-MeOH) has higher potentiality for removing acidity of NAs than supercritical water (SCW) without deposition of coke. TAN removal from NAs using SCF follows irst order kinetics on TAN removal. ILs can reduce acidity of heavy oil either forming zwitterionic species or building cage structure around NAs through speciic chemical bonds. Thus, non-catalytic SCF-and ILs-based TAN reduction process can open a new window to reduce acidity of heavy oils.

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Naphthenic acid removal from crude oil through catalytic decarboxylation on magnesium oxide

Cited by 113 publications

References 14 publications

Extraction of naphthenic acid from highly acidic oil using phenolate based ionic liquids

Extraction of naphthenic acid from highly acidic oil using phenolate based ionic liquids

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

Total Acid Number Reduction of Naphthenic Acids Using Supercritical Fluid and Ionic Liquids

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Naphthenic acid removal from crude oil through catalytic decarboxylation on magnesium oxide

Cited by 113 publications

References 14 publications

Extraction of naphthenic acid from highly acidic oil using phenolate based ionic liquids

Extraction of naphthenic acid from highly acidic oil using phenolate based ionic liquids

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

Total Acid Number Reduction of Naphthenic Acids Using Supercritical Fluid and Ionic Liquids

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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