| US 7,491,313 B2 | ||
| Two-step hydroprocessing method for heavy hydrocarbon oil | ||
| Hiroshi Toshima, Hilversum (Netherlands); and Satoshl Abe, Ehime (Japan) | ||
| Assigned to ExxonMobil Research and Engineering Company, Annandale, N.J. (US) | ||
| Filed on Jun. 14, 2005, as Appl. No. 11/153,558. | ||
| Claims priority of provisional application 60/580607, filed on Jun. 17, 2004. | ||
| Prior Publication US 2006/0011510 A1, Jan. 19, 2006 | ||
| Int. Cl. C10G 65/12 (2006.01); C10G 47/00 (2006.01); C10G 45/04 (2006.01); C10G 47/14 (2006.01); C10G 47/12 (2006.01) | ||
| U.S. Cl. 208—58 [208/111.3; 208/111.35; 208/216 R; 208/216 PP; 208/217] | 11 Claims |
| 1. A method of hydroprocessing a heavy hydrocarbon oil, comprising:
(a) contacting in a first hydroprocessing step the heavy hydrocarbon oil with hydrogen in the presence of a catalytically
effective amount of a first catalyst having activity for hydrocracking asphaltenes in the heavy hydrocarbon oil in order to
produce a hydroprocessed heavy hydrocarbon oil having fewer asphaltenes than the heavy hydrocarbon feed, and
(b) contacting the hydroprocessed heavy hydrocarbon oil with hydrogen in the presence of a second, independently selected
catalyst having activity for hydrodesulfurizing the hydroprocessed heavy hydrocarbon feed; wherein
(i) the second catalyst is a supported catalyst, with the support containing about 2 wt. % to about 40 wt. % silica based
on the total weight of the support,
(ii) the second catalyst is characterized by a pore size distribution having a first peak with a peak position in the range
of about 40 Å diameter to about 200 Å diameter, with the first peak representing pores that together contain about 35% to
about 90% of the total pore volume of the catalyst, and
(iii) the pores of the first peak within a diameter range of about ±20 Å from the peak position contain at least about 50%
of the pore volume in the diameter range of about 40 to about 200 Å.
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