Changes in asphaltene properties during hydrotreating of heavy crudes

J. Ancheyta; G. Centeno; F. Trejo; G. Marroquín

doi:10.1021/ef030023+

Changes in asphaltene properties during hydrotreating of heavy crudes

J. Ancheyta, G. Centeno, F. Trejo, G. Marroquín

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157 Scopus citations

Abstract

Precipitation with n-heptane and characterization of asphaltenes were carried out for products obtained during hydrotreating of Maya heavy crude oil. Hydrotreating experiments were conducted in a pilot plant at constant pressure, hydrogen-to-oil ratio, and space-velocity. Reaction temperature was varied in the range of 380-440°C. Maya crude and hydrotreated products were characterized by API gravity and sulfur, nitrogen, nickel, vanadium, and asphaltenes contents. Elemental analysis, metals content, VPO apparent molecular weight, and NMR measurements were performed in the asphaltenes fraction. The effects of reaction temperature on asphaltenes properties during hydrotreating are discussed in terms of changes in heteroatoms contents and structural parameters.

Original language	English
Pages (from-to)	1233-1238
Number of pages	6
Journal	Energy and Fuels
Volume	17
Issue number	5
DOIs	https://doi.org/10.1021/ef030023+
State	Published - Sep 2003
Externally published	Yes

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abstract = "Precipitation with n-heptane and characterization of asphaltenes were carried out for products obtained during hydrotreating of Maya heavy crude oil. Hydrotreating experiments were conducted in a pilot plant at constant pressure, hydrogen-to-oil ratio, and space-velocity. Reaction temperature was varied in the range of 380-440°C. Maya crude and hydrotreated products were characterized by API gravity and sulfur, nitrogen, nickel, vanadium, and asphaltenes contents. Elemental analysis, metals content, VPO apparent molecular weight, and NMR measurements were performed in the asphaltenes fraction. The effects of reaction temperature on asphaltenes properties during hydrotreating are discussed in terms of changes in heteroatoms contents and structural parameters.",

author = "J. Ancheyta and G. Centeno and F. Trejo and G. Marroqu{\'i}n",

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T1 - Changes in asphaltene properties during hydrotreating of heavy crudes

AU - Ancheyta, J.

AU - Centeno, G.

AU - Trejo, F.

AU - Marroquín, G.

PY - 2003/9

Y1 - 2003/9

N2 - Precipitation with n-heptane and characterization of asphaltenes were carried out for products obtained during hydrotreating of Maya heavy crude oil. Hydrotreating experiments were conducted in a pilot plant at constant pressure, hydrogen-to-oil ratio, and space-velocity. Reaction temperature was varied in the range of 380-440°C. Maya crude and hydrotreated products were characterized by API gravity and sulfur, nitrogen, nickel, vanadium, and asphaltenes contents. Elemental analysis, metals content, VPO apparent molecular weight, and NMR measurements were performed in the asphaltenes fraction. The effects of reaction temperature on asphaltenes properties during hydrotreating are discussed in terms of changes in heteroatoms contents and structural parameters.

AB - Precipitation with n-heptane and characterization of asphaltenes were carried out for products obtained during hydrotreating of Maya heavy crude oil. Hydrotreating experiments were conducted in a pilot plant at constant pressure, hydrogen-to-oil ratio, and space-velocity. Reaction temperature was varied in the range of 380-440°C. Maya crude and hydrotreated products were characterized by API gravity and sulfur, nitrogen, nickel, vanadium, and asphaltenes contents. Elemental analysis, metals content, VPO apparent molecular weight, and NMR measurements were performed in the asphaltenes fraction. The effects of reaction temperature on asphaltenes properties during hydrotreating are discussed in terms of changes in heteroatoms contents and structural parameters.

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SN - 0887-0624

VL - 17

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JO - Energy and Fuels

JF - Energy and Fuels

IS - 5

ER -

Changes in asphaltene properties during hydrotreating of heavy crudes

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