Intevep, S.a.

Universidad Central De Venezuela

Otto Rodriguez

Jose Guitian

Carlos Zerpa

Marcos Rosa-Brussin

Gonzalo Sepulveda

Nereida Carrion

Alfredo Morales Ruiz

Pedro Roa

Julio H Krasuk

Jacinto Pachano

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.

Multiple stepped process for the demetallization and desulfuration of

A natural active stable catalyst for use in the hydrodemetallization (HDM) and the hydroconversion (HC) of heavy crudes and residues and, in particular, a method for the preparation of the catalyst from natural clay and a process for the treatment of heavy crudes and residues with the catalyst. The catalyst is free of hydrogenating metals of Groups VIB and VIII of the Periodic Table and comprises primarily iron, silica and alumina derived from the composition of the natural clay. The catalyst possesses a surface area of between 20 to 100 m.sup.2 /g, a total pore volume of between 0.20 to 0.90 cc/g, where 50 to 100% of the total pore volume contains pores of diameter greater than 400 .ANG.. The catalyst has a ratio I(Fe)/I(Si+Al) of between 0.2 to 0.9 as determined by XPS.

Process for the demetallization and hydroconversion of heavy crudes and

Catalyst formed of natural clay for use in the hydrodemetallization and

Growing community of inventors

Caracas, Venezuela

Otto Rodriguez