Analysis of the heavy oil distillation cuts corrosion by electrospray ionization FT-ICR mass spectrometry, electrochemical impedance spectroscopy, and scanning electron microscopy

Freitas, Sergio Antonio Andrade de; Malacarne, M.; Romão, Wanderson; Dalmaschio, Guilherme P.; Castro, Eustáquio Vinícius Ribeiro de; Celante, V.G.; Freitas, M.B.J.G.

doi:10.1016/j.fuel.2012.05.003

Cited by 51 publications

(28 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The correlation between heavy‐oil distillation cuts and the corrosion process was investigated (Freitas et al, ). Similar to Shi et al negative‐ion ESI‐FTICR‐MS was used to characterize the cuts, including monitoring the O 2 and N 1 classes, and it was found that the abundance of heavy naphthenic acids increased with the distillation‐cut temperature.…”

Section: Recent Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

Advances in mass spectrometric characterization of naphthenic acids fraction compounds in oil sands environmental samples and crude oil—A review

Headley

Peru

Barrow

2015

Mass Spectrometry Reviews

158

View full text Add to dashboard Cite

There has been a recent surge in the development of mass spectrometric methods for detailed characterization of naphthenic acid fraction compounds (all C(c)H(h)N(n)O(o)S(s), species, including heteroatomic and aromatic components in the acid-extractable fraction) in environmental samples. This surge is driven by the increased activity in oil sands environmental monitoring programs in Canada, the exponential increase in research studies on the isolation and toxicity identification of components in oil sands process water (OSPW), and the analytical requirements for development of technologies for treatment of OSPW. There has been additional impetus due to the parallel studies to control corrosion from naphthenic acids during the mining and refining of heavy bitumen and crude oils. As a result, a range of new mass spectrometry tools have been introduced since our last major review of this topic in 2009. Of particular significance are the developments of combined mass spectrometric methods that incorporate technologies such as gas chromatography, liquid chromatography, and ion mobility. There has been additional progress with respect to improved visualization methods for petroleomics and oil sands environmental forensics. For comprehensive coverage and more reliable characterization of samples, an approach based on multiple-methods that employ two or more ionization modes is recommended. On-line or off-line fractionation of isolated extracts, with or without derivatization, might also be used prior to mass spectrometric analyses. Individual ionization methods have their associated strengths and weaknesses, including biases, and thus dependence upon a single ionization method is potentially misleading. There is also a growing trend to not rely solely on low-resolution mass spectrometric methods (<20,000 resolving power at m/z 200) for characterization of complex samples. Future research is anticipated to focus upon (i) structural elucidation of components to determine the correlation with toxicity or corrosion, (ii) verification of characterization studies based on authentic reference standards and reference materials, and (iii) integrated approaches based on multiple-methods and ionization methods for more-reliable oil sands environmental forensics.

show abstract

Section: Recent Applicationsmentioning

confidence: 99%

“…The results are shown for a) blank test, b) original oil, c) fractions 2 and 3, d) fraction 4, e) fraction 5, f) fractions 5 and 6, and g) residue. [Reproduced with permission from Figure , Freitas et al ()].…”

Section: Recent Applicationsmentioning

confidence: 99%

Advances in mass spectrometric characterization of naphthenic acids fraction compounds in oil sands environmental samples and crude oil—A review

Headley

Peru

Barrow

2015

Mass Spectrometry Reviews

158

View full text Add to dashboard Cite

show abstract

“…These results suggest that, unlike the NAs, the sulfur heteroatom compounds remained stable after thermal degradation of crude oil, thus, proving its greater thermal stability. [24][25][26] According to the literature, the NAs may undergo thermal degradation reactions and produce species of short chain (C 1 -C 4 ), which are enhanced by their low aromaticity degree and may also undergo decarboxylation reactions as a consequence of its low thermal stability. 11,27 Figures 1a and 1b show the plots of TAN/weight loss and TAN/corrosion rate versus thermal degradation time.…”

Section: Resultsmentioning

confidence: 99%

Study of the Corrosive Behavior of the AISI 1020 Steel in Acid Crude Oil by Microscopic Techniques (LM, AFM and SEM/EDX) and Raman Spectroscopy

Dias¹,

Barros²,

Sad³

et al. 2018

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

Microscopic techniques were combined to study the influence of corrosion rate on the morphologic behavior of AISI 1020 steel specimens submitted to thermal degradation of a typical acid crude oil (total acid number (TAN) = 2.1390 mg KOH g -1 and total sulfur (S) = 0.7778 wt.%). The techniques used were light microscopy (LM), scanning electron microscopy/energy dispersive spectroscopy (SEM/EDX), atomic force microscopy (AFM) as well as Raman spectroscopy. Assays were performed in six different degradation time (t = 6, 12, 24, 36, 48 and 72 h) at 320 °C. After the exposure of the specimens to petroleum, a reduction above 37% in the TAN after t = 72 h was observed, with a maximum corrosion rate during the first periods of degradation (t = 6 and 12 h). Correlating the TAN and corrosion rate data with the microscopic data, the images of LM, AFM, and SEM/EDX showed that after 6 h of exposure to petroleum, a passivation film was formed on the surface of the steel. This film consisted of two layers, an external one, formed of FeS, and an internal one, composed of iron oxides and oxyhydroxides. However, after 48 h of thermal degradation, this morphology was altered to a single layer of FeS coating the steel surface.

show abstract

“…RCOOH (soluble) + S (compuestos)(soluble) → RCOOH (Abs) + S (compuestos)( (Abs) (9) Estos compuestos absorbidos en la doble capa electroquímica pueden reaccionar con el hierro presente en el material, como se evidenció en las curvas de Nyquist en algunas de las pruebas ensayadas, en las que se presentó dos domos capacitivos o dos constantes de tiempo en las curvas de bode: frecuencia vs IZI, las cuales se atribuyen a las reacciones químicas dando lugar a los procesos de corrosivos, que de acuerdo con el análisis del DE, está dado principalmente por el mecanismo de corrosión por efecto de azufre, dando como resultado las siguientes posibles reacciones [7,15,16]:…”

Section: Figura 19unclassified

Evaluación De La Influencia De Las Condiciones De Fondo De Pozo En El Deterioro De Un Acero API P110, En Ambientes Simulados Del Proceso De Combustión In Situ, Por Gravimetría Y EIS

2016

View full text Add to dashboard Cite

RESUMENDada la gran cantidad de consumo del petróleo como recurso energético, tiene por consecuencia una diminución en el crudo existente a nivel mundial, la explotación del crudo pesado surge como nueva alternativa de extracción que se deja a un lado debido a las dificultades asociadas a su procesamiento. Por lo tanto el proceso de combustión in situ, es un método de extracción que facilita la producción de este tipo de crudo, pues generan un aumento en la producción a expensas de un aumento de los costos asociados a mantenimiento, pues a las condiciones operacionales se favorecen fenómenos como la corrosión de los diferentes materiales involucrados en el proceso, pues están expuestos a atmosferas de sulfuro de hierro (H 2 S), entre otros gases; a temperaturas y presiones elevadas, lo cual promueve la corrosión y los fenómenos de Sulfide stress cracking. Adicionalmente, los materiales se ven afectados por la acidez y la cantidad de impurezas presentes en el crudo. Por lo anterior se evaluó el comportamiento del acero API P110 expuesto a crudo pesado con diferentes contenidos de azufre (0.5 -1.5 % en peso), TAN (2.28 -6.84 g KOH/g crudo) a elevadas temperaturas (190 -250 °C) y presiones (8.96x106 -11.72x10 6 Pa), ya que se pueden presentar estas condiciones en el proceso de extracción por combustión in situ en fondos de pozo. Se encontró que el principal mecanismo de corrosión en estas condiciones es la corrosión por sulfidación cuyos principales productos de corrosión son el FeS y óxido de hierro (Fe 3 O 4 ).Palabras clave: Velocidad de corrosión, EIS, gravimetría, sulfidación, alta temperatura y altas presiones. ABSTRACTGiven the large amount of consumption of oil as an energy source, is resulting in a diminution in the existing world oil, the exploitation of heavy oil emerges as new alternative extraction is left aside because of the difficulties associated to processing. Therefore the in situ combustion process is an extraction method that facilitates production of such oil therefore lead to increased production at the expense of an increase in costs associated with maintenance, as operational conditions promote corrosion phenomena as the different materials involved in the process, since they are exposed to atmospheres of iron Sulfide (H 2 S), among other gases; at elevated temperatures and pressures, which promotes corrosion phenomena Sulfide stress cracking. Additionally, the materials affected by the acidity and the amount of impurities present in the crude. Therefore the behaviour of API P110 steel exposed to heavy oil was evaluated with different sulphur contents (0.5 -1.5 wt%), TAN (2.28 -6.84 g KOH / g oil) at elevated temperatures (190-250 °C) and pressures (8.96x10 6 to 11.72x10 6 Pa), since these conditions may occur in the extraction process by in situ combustion downhole. It was found that the main mechanism of corrosion in these conditions is sulfidation corrosion corrosion whose

show abstract

Analysis of the heavy oil distillation cuts corrosion by electrospray ionization FT-ICR mass spectrometry, electrochemical impedance spectroscopy, and scanning electron microscopy

Cited by 51 publications

References 10 publications

Advances in mass spectrometric characterization of naphthenic acids fraction compounds in oil sands environmental samples and crude oil—A review

Advances in mass spectrometric characterization of naphthenic acids fraction compounds in oil sands environmental samples and crude oil—A review

Study of the Corrosive Behavior of the AISI 1020 Steel in Acid Crude Oil by Microscopic Techniques (LM, AFM and SEM/EDX) and Raman Spectroscopy

Evaluación De La Influencia De Las Condiciones De Fondo De Pozo En El Deterioro De Un Acero API P110, En Ambientes Simulados Del Proceso De Combustión In Situ, Por Gravimetría Y EIS

Contact Info

Product

Resources

About