US 2025/0059110 A1Published application

Fischer-tropsch catalyst activation

OwnerAlexander James Paterson, Jay Simon Clarkson +4inventors

InventorsAlexander James Paterson, Jay Simon Clarkson, Andrew James Coe, Richard John Mercer, John West, Robert Miles Baker

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Abstract

The present disclosure relates generally to processes for activating Fischer-Tropsch synthesis catalysts. In particular, the application concerns a process for the activation of a Fischer-Tropsch synthesis catalyst, the process comprising: (i) contacting the catalyst with a first gaseous composition comprising at least 80% N2 at a pressure in the range of 2 barg to 20 barg at a temperature of no more than 150° C.; (ii) contacting the catalyst with a second gaseous composition comprising at least 80% H2 to form a H2/N2 gaseous composition with a H2:N2 molar ratio in the range of 0.2:1 to 2:1, resulting in a pressure in the range of 10 barg to 30 barg; (iii) increasing the temperature to a range of 220° C. to 260° C.; (iv) maintaining the catalyst at the conditions of step (iii) for a hold period in the range of 2 hr to 96 hr.

Claims18

Dependent claims

A process for the activation of a Fischer-Tropsch synthesis catalyst, the process comprising:

(i) contacting the catalyst with a first gaseous composition comprising at least 80% N2 at a pressure in the range of 2 barg to 20 barg at a temperature of no more than 250° C.;
(ii) introducing a second gaseous composition to the first gaseous composition below 175° C. where the second gaseous composition comprises at least 80% H2 to form a H2/N2 gaseous composition with a H2:N2 molar ratio in the range of 0.2:1 to 2:1, resulting in a pressure in the range of 10 barg to 30 barg;
(iii) increasing the temperature to a range of 220° C. to 260° C. at a ramp rate of no more than 20° C./hr, and a GHSV in the range of 2000 hr−1 to 8000 hr−1;
(iv) maintaining the catalyst at the conditions of step (iii) for a hold period in the range of 2 hr to 96 hr;
(v) cooling the catalyst to a temperature of no more than 150° C.

2 more elements

Dependencies are inferred from the claim text.