Catalyst For The First Hydrodemetalization Step In A Hydroprocessing System With Multiple Reactors For The Improvement Of Heavy And Extra Heavy Crudes (Instituto Mexicano Del Petroleo)

CATEGORY: CATALYST-HEAVY CRUDE 
Catalyst For The First Hydrodemetalization Step In A Hydroprocessing System With Multiple Reactors For The Improvement Of Heavy And Extra Heavy Crudes (Instituto Mexicano Del Petroleo)
United States Patent Application 20150321177
November 12, 2015
Applicant: Instituto Mexicano Del Petroleo
Abstract
An improved catalyst for hydrodemetallization of heavy crude oils and residua is disclosed. The catalyst is adopted for fixed bed hydroprocessing units. The invention is characterized for having a large pore diameter catalyst principally for hydrodemetallization of heavy oil and residue in a first reactor of a multi-reactor process. The catalyst has high demetallizing activity and high metal deposition capacity which results in good stability with time on stream (TOS). The hydrorefining catalyst is obtained by kneading a porous starting powder principally composed of gamma-alumina and having a pore capacity of 0.3-0.6 ml/g or larger and a mean pore diameter of 10 to 26 nm, extrudating and calcining, and after that supported with active metals component of elements belonging to groups VIIIB and VIB of the periodic table.
FIELD OF THE INVENTION
[0002] The present invention relates to a catalyst developed for hydroprocessing of heavy oil and residue, and particularly relates to a catalyst used in a hydrodemetallization step of a multistage process for hydroconversion of heavy crude oils and residue.
[0003] The catalysts synthesized by the process of the present invention considerably improve the hydrodemetallization activity and are not deactivated quickly by contaminants, particularly metals such as nickel and vanadium (Ni or and V), that are present in heavy crude oil feedstock. The present process not only removes the adverse impurities such as metals, sulfur, nitrogen, etc, but also can crack heavy fractions into high value components having a low boiling point.
BACKGROUND OF THE
Free Full Text Source:  http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=12&f=G&l=50&co1=OR&d=PG01&s1=catalyst.TTL.&s2=catalysis.TTL.&OS=TTL/catalyst+OR+TTL/catalysis&RS=TTL/catalyst+OR+TTL/catalysis