Patent ID: 9523046
Filing Date: 2016-12-20
CPC Classification: C10G,Y02E,Y02P

Claim Text:
1. A method for hydroprocessing sulfur-containing feeds, comprising: exposing a first feedstock comprising a first mineral fraction and a bio-derived fraction to a first supported catalyst comprising a first Group VI metal and a Group VIII metal selected from Co or Ni under first effective hydrodesulfurization conditions, the first effective hydrodesulfurization conditions including a hydrogen partial pressure of about 500 psig (3.4 MPag) or less, to form a first effluent, the first feedstock comprising at least about 0.5 wt % of oxygen, at least about 800 wppm of sulfur, and from 1 wt % to 35 wt % of the bio-derived fraction; exposing the first effluent to a second supported catalyst comprising a second Group VI metal and a Group VIII metal selected from Co or Ni, in the presence of hydrogen under the first effective hydrodesulfurization conditions to form a first desulfurized product having a sulfur content of about 200 wppm or less, the selected Group VIII metal in the second catalyst being different from the selected Group VIII metal in the first catalyst; exposing a second feedstock comprising a second mineral fraction to at least a portion of the first supported catalyst in the presence of hydrogen under second effective hydrodesulfurization conditions to form a second effluent, the second effective hydrodesulfurization conditions including a hydrogen partial pressure of about 500 psig (3.4 MPag) or less, the second feedstock containing less than about 0.5 wt % of a bio-derived fraction and having a sulfur content of at least about 800 wppm, the at least a portion of the first supported catalyst comprising at least about 80 vol % of the first supported catalyst that was exposed to the first feedstock; and exposing the second effluent to at least a portion of the second supported catalyst in the presence of hydrogen under the second effective hydrodesulfurization conditions for forming a second desulfurized product having a sulfur content of about 200 wppm or less, the at least a portion of the second supported catalyst comprising at least about 80 vol % of the second supported catalyst that was exposed to the first feedstock, wherein the first supported catalyst and the second supported catalyst form a stacked bed of catalysts.