Kinetics of asphaltene hydroconversion .2. Catalytic hydrocracking of a coal residue

被引：20

作者：

Benito, AM

Callejas, MA

Martinez, MT

机构：

[1] Instituto de Carboquímica, C.S.I.C., P.O. Box 589

来源：

FUEL | 1997年 / 76卷 / 10期

关键词：

asphaltenes; catalytic hydrocracking; kinetics;

D O I：

10.1016/S0016-2361(97)00108-7

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：

Catalytic hydrocracking of an asphaltene-rich residue obtained by direct liquefaction of a Spanish subbituminous coal was carried out at different temperatures and reaction times. A kinetic study of asphaltene conversion was performed, and the chemical changes produced in the oil fraction during the process were studied by elemental analysis and H-1 n.m.r. There was a high asphaltene conversion (max. 47 wt%) to oil + gas, and the data fitted first-order kinetics for asphaltene conversion and for oil and gas formation. The presence of catalyst and hydrogen considerably inhibited coke formation. Hydrogen was predominantly incorporated in the oil fraction, giving less aromatic structures, and cracking reactions mainly occurred in the asphaltenic fraction. (C) 1997 Elsevier Science Ltd.

引用

页码：907 / 911

页数：5

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