07578928 is referenced by 17 patents and cites 149 patents.

Methods and systems for hydroprocessing heavy oil feedstocks to form an upgraded material involve the use of a colloidal or molecular catalyst dispersed within a heavy oil feedstock, a hydrocracking reactor, and a hot separator. The colloidal or molecular catalyst promotes hydrocracking and other hydroprocessing reactions within the hydrocracking reactor. The catalyst is preferentially associated with asphaltenes within the heavy oil feedstock, which promotes upgrading reactions involving the asphaltenes rather than formation of coke precursors and sediment. The colloidal or molecular catalyst overcomes problems associated with porous supported catalysts in upgrading heavy oil feedstocks, particularly the inability of such catalysts to effectively process asphaltene molecules. The result is one or more of reduced equipment fouling, increased conversion level, and more efficient use of the supported catalyst if used in combination with the colloidal or molecular catalyst.

Title
Hydroprocessing method and system for upgrading heavy oil using a colloidal or molecular catalyst
Application Number
11/117262
Publication Number
7578928 (B2)
Application Date
April 28, 2005
Publication Date
August 25, 2009
Inventor
Lap Keung Lee
West Windsor
NJ, US
Roger K Lott
Edmonton
CA
Agent
Workman Nydegger
Assignee
Headwaters Heavy Oil
UT, US
IPC
B01J 8/00
C10G 47/00
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