Multi-catalyst selection for chlorided reforming catalyst
AssigneeUop LLC
InventorsMark P. Lapinski, Leon Yuan, Mark D. Moser
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AssigneeUop LLC
InventorsMark P. Lapinski, Leon Yuan, Mark D. Moser
Estimating the term…
The chloride retention of an alumina catalyst over the course of operation and regeneration can be controlled and stabilized by incorporating a small amount of a component selected from the group including phosphorus, boron, titanium, silicon, and zirconium. Steam treatments have been used to simulate commercial hydrothermal stability and a small amount of the stabilizer component has been discovered which balances chloride retention. Moreover, in a multi-catalyst hydrocarbon conversion process, such as the two-step reforming of naphtha, it has been discovered that proper selection of a catalyst having lower chloride retention in combination with another catalyst having higher chloride retention results in a process with increased yield and/or higher octane gasoline.
A reforming process comprising contacting a naphtha feedstock with a first catalyst under reforming conditions to produce a first product stream, and contacting at least a portion of the first product stream with at least a second catalyst under reforming conditions to provide an aromatized product with increased octane over the feedstock;
A reforming process comprising contacting a substantially sulfur free naphtha feedstock with a fixed-bed catalyst under first reforming conditions to produce a fixed-bed product stream, and contacting at least a portion of the fixed-bed product stream with a moving-bed catalyst under second reforming conditions to provide an aromatized product with increased octane over the feedstock, the fixed-bed catalyst comprising an alumina support having dispersed thereon a platinum group component, a chloride component, and a stabilizer component selected from the group consisting of phosphorus, boron, titanium, silicon, zirconium and mixtures thereof, present in an amount from greater than 0 to about 1 wt-% of the catalyst calculated on an elemental basis;
A naphtha catalyst system comprising a first catalyst and at least a second catalyst, the first catalyst comprising an alumina support having dispersed thereon a platinum group component, a chloride component, and a stabilizer component selected from the group consisting of phosphorus, boron, titanium, silicon, zirconium and mixtures thereof, present in an amount from greater than 0 to about 1 wt-% of the catalyst calculated on an elemental basis;
Dependencies are inferred from the claim text.