CHARACTERISTIC CHANGES OF ASPHALTENES DURING VISBREAKING OF NORTH GUJARAT SHORT RESIDUE

被引：21

作者：

SINGH, ID

KOTHIYAL, V

RAMASWAMY, V

KRISHNA, R

机构：

[1] Indian Institute of Petroleum, Dehradun

来源：

FUEL | 1990年 / 69卷 / 03期

关键词：

asphaltene; petroleum products; structural properties;

D O I：

10.1016/0016-2361(90)90088-8

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：

The physico-chemical properties and structural parameters of asphaltenes separated from feed (short residue) and visbroken products (+ 500 °C) were estimated using various instrumental analytical techniques. Analysis of the variation of these properties and parameters with varying severity of operation (temperature and residence time in soaker visbreaking), provided information regarding the chemistry of visbreaking, and in particular the structural changes with respect to asphaltenes. The major reactions are dealkylation of aromatic clusters, and, at high severity, dehydrogenation and/or ring opening of naphthenic rings condensed with aromatic clusters. These reactions promote the condensation of aromatic clusters to yield more asphaltenes and coke. © 1990.

引用

页码：289 / 292

页数：4

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