07517446 is referenced by 14 patents and cites 143 patents.

A fixed bed hydroprocessing system, and also a method for upgrading a pre-existing fixed bed hydroprocessing system, involves preliminarily upgrading a heavy oil feedstock in one or more slurry phase reactors using a colloidal or molecular catalyst and then further hydroprocessing the upgraded feedstock within one or more fixed bed reactors using a porous supported catalyst. 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. Asphaltene or other hydrocarbon molecules otherwise too large to diffuse into the pores of the fixed bed catalyst can be upgraded by the colloidal or molecular catalyst. One or more slurry phase reactors may be built and positioned upstream from one or more fixed bed reactors of a pre-existing fixed bed system and/or converted from one or more pre-existing fixed bed reactors.

Title
Fixed bed hydroprocessing methods and systems and methods for upgrading an existing fixed bed system
Application Number
11/117203
Publication Number
7517446 (B2)
Application Date
April 28, 2005
Publication Date
April 14, 2009
Inventor
Peter C Quinn
Cochrane
CA
Lap Keung Lee
West Windsor
NJ, US
Roger K Lott
Edmonton
CA
Agent
Workman Nydegger
Assignee
Headwaters Heavy Oil
UT, US
IPC
C10G 47/00
C10G 45/00
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