Catalytic reaction zone for sulfur contaminant sensitive catalyst
AssigneeUop LLC
InventorsMichael B. Russ, Thomas A. Jasonowicz
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Abstract
A combination downflow contaminant treatment and/or removal bed in combination with a radial flow bed of contaminant sensitive catalyst in a single reactor vessel eliminates unexpected deactivation of contaminant sensitive catalyst. The process of this invention also monitors the entrance of contaminants into the downflow contaminant treatment/removal bed to measure total contaminant loading to avoid unnecessary shut-downs of the reactor vessel during temporary contaminant loadings. This invention is particularly useful for highly sulfur sensitive reforming catalysts that are used in combination with a sulfur sorbent for removal of the sulfur contaminants.
Claims7
A process for the catalytic conversion of a hydrocarbon feedstock with an L-zeolite catalyst, said process comprising:
- a) passing a hydrocarbon feed to a reactor vessel;
- b) retaining a sorbent for the sorption of sulfur compounds in said reactor vessel as a downflow bed and passing said feed through said sorbent material;
- c) passing said feed from said downflow bed into contact with an L-zeolite catalyst arranged in said reactor vessel as a radial flow catalyst bed;
- d) measuring sulfur that enters said downflow bed;
- e) recording a measurement of sulfur loading in said downflow bed;
- and,
- f) comparing said measurement of sulfur loading to the total sulfur sorbent capacity of said downflow bed.
Dependencies are inferred from the claim text.