Analysis of heavy oils: Method development and application to Cerro Negro heavy petroleum

Carbognani, Lante; Hazos, M.; Sánchez, Vı́ctor; Green, J.A.; Green, J.B.; Grigsby, R. D.; Pearson, C.D.; Reynolds, J.W.; Shay, J.Y.; Sturm, G.P.; Thomson, J.S.; Vogh, J.W.; Vrana, R.P.; Sun, Yifeng; Diehl, B.H.; Grizzle, P.L.; Hirsch, D.; Hornung, Krunoslav; Tang, S.Y.

doi:10.2172/5109186

Cited by 3 publications

(1 citation statement)

References 25 publications

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“…Detailed characterization of petroleum molecules boiling below 1000 °F has been established in the last century based on gas chromatography (GC), , mass spectrometry (MS), ,− and preparative-liquid chromatographic (LC) separations. ,− The characterization of petroleums boiling above 1000 °F, such as VR, is much more challenging because of their high boiling point and high molecular weights. In addition, these heavy petroleum fractions typically contain significant amounts of asphaltenes (i.e., n -heptane or n -pentane insolubles) due to their rich heteroatom contents (S, N, O, and metals) and low H/C ratios.…”

Section: Introductionmentioning

confidence: 99%

Molecular Characterization of Heavy Petroleum by Mass Spectrometry and Related Techniques

Qian

2021

Energy Fuels

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The rapid advances in mass spectrometry and related technologies in the last two decades have revolutionized our understanding of heavy petroleum composition and greatly accelerated research and development within the oil and gas industry. Petroleum is a highly complex mixture of hydrocarbons and heteroatom-containing (S, N, O, metals, and more) hydrocarbons. Molecular composition has a significant impact on the properties of crude oils and the way they need to be handled in refining processes. In this review, the current state is highlighted, as well as progress in key areas of the molecular characterization of heavy petroleum, including separation approaches, ionization methods, high-resolution mass spectrometry, dissociation technology, and multidimensional separation mass spectrometry, including GC soft ionization mass spectrometry and ion mobility-mass spectrometry.

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Section: Introductionmentioning

confidence: 99%

Molecular Characterization of Heavy Petroleum by Mass Spectrometry and Related Techniques

Qian

2021

Energy Fuels

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Analysis of sulfur compound types in asphalt

Green¹,

Yu²,

Pearson³

et al. 1993

Energy Fuels

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Sulfur compound types were determined in asphalts from the SHRP Materials Reference Library. Sulfoxides were determined by infrared spectrophotometry (IR); sulfides were measured via oxidation to sulfoxides with tetrabutylammonium periodate followed by I R thiophenes were determined by difference (total sulfur minus other types). Compound types were determined in whole asphalts as well as for fractions from each asphalt obtained using nonaqueous ion exchange liquid chromatography (NIELC). Results from the individual NIELC fractions were compared against those for the corresponding whole asphalt. In addition, results from this analysis were compared against those obtained by other workers utilizing X-ray (XANES) techniques. The neutral fraction from NIELC was further fractionated into saturated hydrocarbon, neutral-aromatic (contains thiophenic sulfur types), and sulfide classes using liquid chromatographic (LC) techniques. The distribution of sulfur types obtained from the LC separation of neutrals was compared with that obtained from the above instrumental methods. Generally, results from the IR-oxidation techniques were in good agreement with those from LC separations and XANES analysis, except that the latter include aromatic or other sulfide types in with total sulfides, whereas the oxidation-IR approach appears to be specific for aliphatic sulfides, per se. Considerable variation of sulfur types within NIELC fractions was observed. Compounds with one or more acidic groups plus a sulfoxide group constitute a significant proportion of the total amphoteric compounds present in most asphalts.

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An Evaluation of the Delayed-Coking Product Yield of Heavy Feedstocks Using Asphaltene Content and Carbon Residue

Schabron

Speight

1997

Rev. Inst. Fr. Pét.

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La composition et le rŽsidu de coke de six rŽsidus de raffinage de diffŽrents pŽtroles lourds ont ŽtŽ ŽvaluŽs afin de dŽterminer des tendances. La composition ŽlŽmentaire, la teneur en mŽtaux-traces, le rŽsidu de coke et la densitŽ spŽcifique ont ŽtŽ dŽterminŽs sur le rŽsidu complet. Chaque rŽsidu a ŽtŽ dŽsas-phaltŽnŽ dans lÕheptane et les produits solubles dans lÕheptane ont ŽtŽ sŽparŽs en fractions saturŽe, aromatique et polaire sur du gel de silice activŽe. La composition ŽlŽmentaire, la teneur en mŽtaux-traces, la masse molŽculaire et le rŽsidu de coke ont ŽtŽ dŽterminŽs sur les asphalt•nes. La relation entre les rŽsidus de coke et les caractŽristiques des asphalt•nes a ŽtŽ ŽtudiŽe, ce qui a permis dÕŽtablir une corrŽlation entre les diffŽrentes caractŽristiques. Le produit de la masse molŽculaire apparente de la globalitŽ des asphalt•nes, du pourcentage dÕasphalt•nes dans le rŽsidu complet et de la teneur en hŽtŽroatomes dans les asphalt•nes prŽsente une bonne corrŽlation avec les valeurs de rŽsidus de coke et peut donc •tre utilisŽ pour prŽvoir les rendements en produit de cokŽfaction diffŽrŽe. Les asphalt•nes ont ŽtŽ sŽparŽs en quatre fractions en fonction de leur taille molŽculaire apparente par chromatographie dÕexclusion prŽ-parative (CE). La teneur en soufre, la masse molŽculaire et la teneur en mŽtaux-traces ont ŽtŽ dŽterminŽes sur les fractions de chromatographie dÕexclusion prŽparative. Les bilans mati•res montrent que les rŽsultats obtenus sur les fractions sont en accord avec les rŽsultats obtenus sur le produit initial. Ceci indique que les contributions des propriŽtŽs des fractions peuvent •tre ŽtudiŽes et mises en relation avec les propriŽtŽs du produit global. AN EVALUATION OF THE DELAYED-COKING PRODUCT YIELD OF HEAVY FEEDSTOCKS USING ASPHALTENE CONTENT AND CARBON RESIDUESix residua from different crude oils were evaluated for composition and carbon residue forming tendencies. The whole residua were evaluated for elemental composition, trace metals content, carbon Se ha procedido a la evaluaci-n de la composici-n y del residuo de coque de seis residuos de refino de diversos petr-leos pesados con objeto de determinar sus tendencias respectivas. La composici-n elemental, la concentraci-n de trazas de metales, el residuo de coque y la densidad espec'fica se han determinado mediante el residuo completo. Cada residuo se ha desasfaltenado en el heptano y los productos solubles en el heptano se han separado en forma de fracciones saturada, arom ‡tica y polar sobre gel de s'lice activado, La composici-n elemental, la concentraci-n de trazas de metales, la masa molecular y el residuo de coque se han determinado sobre los asfaltenos. Se ha procedido al estudio de la relaci-n entre los residuos de coque y las caracter'sticas de los asfaltenos, lo cual ha permitido establecer una correlaci-n entre las distintas caracter'sticas. El producto de la masa molecular aparente de la globalidad de los asfaltenos, del porcentaje de asfaltenos en el residuo completo y de la concentraci-n en hetero ‡tomos presenta u...

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Analysis of heavy oils: Method development and application to Cerro Negro heavy petroleum

Cited by 3 publications

References 25 publications

Molecular Characterization of Heavy Petroleum by Mass Spectrometry and Related Techniques

Molecular Characterization of Heavy Petroleum by Mass Spectrometry and Related Techniques

Analysis of sulfur compound types in asphalt

An Evaluation of the Delayed-Coking Product Yield of Heavy Feedstocks Using Asphaltene Content and Carbon Residue

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