Changes in asphaltene properties during hydrotreating of heavy crudes

被引：135
作者：
Ancheyta, J
Centeno, G
Trejo, F
Marroquín, G
机构：
[1] Inst Mexicano Petr, Mexico City 07730, DF, Mexico
[2] Inst Tecnol Ciudad Madero, Juventino Rosas & Jesus Urueta, Col Mangos, Cd Madero 89440, Tamps, Mexico
[3] Univ Nacl Autonoma Mexico, Fac Quim, Mexico City 04510, DF, Mexico
来源：
ENERGY & FUELS | 2003年 / 17卷 / 05期
关键词：
D O I：
10.1021/ef030023+
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
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 degreesC. 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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收藏
页码：1233 / 1238
页数：6
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