Systems and methods for producing a crude product

Details Systems and methods for producing a crude product Systems and methods for producing a crude product

2011-04-26

2011-04-26

Hill, Jr., Robert J (Department: 1774)

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

C208S057000, C208S058000

Reexamination Certificate

active

07931796

ABSTRACT:
Systems and methods for hydroprocessing a heavy oil feedstock, the system employs a plurality of contacting zones and separation zones with at least some of the fresh slurry catalyst being supplied to at least a contacting zone other than the first contacting zone. The contacting zones operate under hydrocracking conditions, employing the slurry catalyst for upgrading the heavy oil feedstock, forming upgraded products of lower boiling hydrocarbons. In the separation zones, upgraded products are removed overhead and optionally, further treated in an in-line hydrotreater. A least a portion of the non-volatile fractions recovered from the separation zones is recycled back to the first contacting zone in the system.

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