07449103 is referenced by 16 patents and cites 84 patents.

An ebullated bed hydroprocessing system, and also a method for upgrading a pre-existing ebullated bed hydroprocessing system, involves introducing a colloidal or molecular catalyst, or a precursor composition capable of forming the colloidal or molecular catalyst, into an ebullated bed reactor. The colloidal or molecular catalyst is formed by intimately mixing a catalyst precursor composition into a heavy oil feedstock and raising the temperature of the feedstock to above the decomposition temperature of the precursor composition to form the colloidal or molecular catalyst in situ. The improved ebullated bed hydroprocessing system includes at least one ebullated bed reactor that employs both a porous supported catalyst and the colloidal or molecular catalyst to catalyze hydroprocessing reactions involving the feedstock and hydrogen. The colloidal or molecular catalyst provides catalyst in what would otherwise constitute catalyst free zones within the ebullated bed hydroprocessing system. Asphaltene or other hydrocarbon molecules too large to diffuse into the pores of the supported catalyst can be upgraded by the colloidal or molecular catalyst. A slurry phase reactor may be positioned upstream from one or more ebullated bed reactors or converted from a pre-existing ebullated bed reactor.

Title
Ebullated bed hydroprocessing methods and systems and methods of upgrading an existing ebullated bed system
Application Number
11/117202
Publication Number
7449103 (B2)
Application Date
April 28, 2005
Publication Date
November 11, 2008
Inventor
Lap Keung Lee
West Windsor
NJ, US
Roger K Lott
Edmonton
CA
Agent
Workman Nydegger
Assignee
Headwaters Heavy Oil
UT, US
IPC
C10G 45/00
C10G 47/00
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