Multiple stepped process for the demetallization and desulfurati

Details Multiple stepped process for the demetallization and desulfurati Multiple stepped process for the demetallization and desulfurati

1986-07-08

1988-06-21

Chaudhuri, Olik

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With preliminary treatment of feed

208210, 208211, 208216PP, 208251H, C01G 6704

Patent

active

047523760

ABSTRACT:
A process for treating heavy crude oil feedstocks to reduce the asphaltenes, metals and sulfur content thereof while maintaining a high conversion thereof comprising: subjecting the feedstock to an asphaltene separation stage and thereafter subjecting the deasphaltene crude to a first hydrotreatment stage employing a first macroporous catalyst so as to produce an intermediate partially demetallized and desulfurized product and thereafter treating said intermediate product in a second hydrotreatment stage using a microporous catalyst wherein the microporous catalyst exhibits extended life period.

REFERENCES:
patent: 3451923 (1969-06-01), Welty, Jr. et al.
patent: 3755196 (1973-08-01), Mickelson
patent: 4165274 (1979-08-01), Kwant
patent: 4166026 (1979-08-01), Fukui et al.
patent: 4212729 (1980-07-01), Hensley, Jr. et al.
patent: 4591426 (1986-05-01), Krasuk et al.

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