Process for the demetallization and hydroconversion of heavy crudes and residues using a natural clay catalyst

US4613427A · kind A · utility

Assignees

• Intevep, S.A. · VE
• Universidad Central de Venezuela · VE

Inventors

• Gonzalo Sepulveda · Caracas, VE
• Marcos Rosa-Brussin · Caracas, VE
• Nereida Carrion · Caracas, VE
• Pedro Roa · Caracas, VE
• Alfredo Morales Ruiz · Caracas, VE
• Jose Guitian · Maria Luisa, VE
• Otto Rodriguez · Miami, US
• Carlos Zerpa · Caracas, VE

Key dates

• Filing date: Aug 28, 1985
• Grant date: Sep 23, 1986
• Expiry date: Aug 28, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G45/04
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

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.