Passivation of sulphur hydroconversion catalyst
AssigneeEurecat S.A.
InventorsPierre Dufresne, Franck Labruyere
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Abstract
The present invention concerns a process for ex situ oxidizing passivation of hydrocarbon hydroconversion catalysts, in particular for hydrotreatment in their sulphurized states, in which the sulphurized catalyst undergoes two treatments: contact with an oxidizing gas stream, and contact with an organic liquid (for example hydrocarbon) which partially fills its pores.
Claims20
A process for ex situ oxidizing passivation of a sulfurized hydrocarbon hydroconversion catalyst, comprising a first step of contacting said sulfurized catalyst with at least one oxidizing gaseous stream, and a subsequent step of contacting the catalyst with at least one organic liquid with an initial boiling point of more than 120° C. which at least partially fills the pores of the catalyst.
A process for ex situ oxidizing passivation of a sulfurized hydrocarbon hydroconversion catalyst, comprising a first step of contacting said sulfurized catalyst with at least one oxidizing gaseous stream, and a second step of contacting the catalyst with at least one organic liquid with an initial boiling point of more than 120° C. which at least partially fills the pores of the catalyst, said second step being conducted on the catalyst previously contacted with said at least one oxidizing gaseous stream and without any intervening chemical reaction between the first and second steps.
A process for ex situ oxidizing passivation of a sulfurized hydrocarbon hydroconversion catalyst, comprising a first step of contacting said sulfurized catalyst with at least one oxidizing gaseous stream, and an immediately subsequent step of contacting the catalyst with at least one organic liquid with an initial boiling point of more than 120° C. which at least partially fills the pores of the catalyst.
Dependencies are inferred from the claim text.