FISCHER-TROPSCH CATALYST ACTIVATION

    公开(公告)号:US20250059110A1

    公开(公告)日:2025-02-20

    申请号:US18722820

    申请日:2022-12-22

    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.

    Fischer-Tropsch Processes with Modified Product Selectivity

    公开(公告)号:US20240002734A1

    公开(公告)日:2024-01-04

    申请号:US18252685

    申请日:2021-12-17

    Applicant: BP P.L.C.

    Abstract: The present disclosure relates generally to compositions and processes for modifying Fischer-Tropsch product selectivity. In particular, the disclosure provides for a for converting a mixture of hydrogen and carbon monoxide gases to a product composition comprising alcohols and liquid hydrocarbons via Fischer-Tropsch synthesis in the presence of a supported cobalt-manganese Fischer-Tropsch synthesis catalyst, the process comprising: contacting the catalyst with a first gaseous feed comprising carbon monoxide and hydrogen for at least 12 hours to provide via Fischer-Tropsch synthesis a first product composition comprising C5+ hydrocarbons and alcohol; then contacting the catalyst with a first selectivity gaseous composition comprising at least 35 vol % H2 and a H2:CO molar ratio of at least 2; and then contacting the catalyst with a second gaseous feed comprising carbon monoxide and hydrogen to provide a second product composition comprising C5+ hydrocarbons, with a selectivity of no more than 5% for alcohols. Optionally, the catalyst selectivity to alcohols can be reversed by contacting the catalyst with a second selectivity gaseous composition comprising CO or a H2:CO molar ratio of at below 1.5.

    Fischer-Tropsch process, supported Fischer-Tropsch synthesis catalyst and uses thereof

    公开(公告)号:US11203717B2

    公开(公告)日:2021-12-21

    申请号:US16968777

    申请日:2019-02-06

    Applicant: BP P.L.C.

    Abstract: A process for converting a mixture of hydrogen and carbon monoxide gases to a composition comprising alcohols and liquid hydrocarbons by means of a Fischer-Tropsch synthesis reaction, said process comprising contacting a mixture of hydrogen and carbon monoxide gases, preferably in the form of synthesis gas mixture, with a supported Co—Mn Fischer-Tropsch synthesis catalyst, wherein: the support material of the supported Co—Mn Fischer-Tropsch synthesis catalyst comprises a material selected from titania, zinc oxide, zirconia, and ceria; the supported synthesis catalyst comprises at least 2.5 wt % of manganese, on an elemental basis, based on the total weight of the supported synthesis catalyst; the weight ratio of manganese to cobalt, on an elemental basis, is 0.2 or greater; the molar ratio of hydrogen to carbon monoxide is at least 1; and, the Fischer-Tropsch synthesis reaction is conducted at a pressure in the range of from 1.0 to 10.0 MPa absolute.

    Start-up procedure for a Fischer-Tropsch process

    公开(公告)号:US10954450B2

    公开(公告)日:2021-03-23

    申请号:US16485368

    申请日:2018-02-09

    Applicant: BP P.L.C.

    Abstract: The present invention generally relates to a Fischer-Tropsch process, in particular a Fischer-Tropsch process for converting a feed comprising a mixture of hydrogen and carbon monoxide gases, preferably in the form of a synthesis gas mixture, to hydrocarbons by contacting a cobalt-containing Fischer-Tropsch synthesis catalyst with a mixture of hydrogen and carbon monoxide in a reactor at a pressure of 4.0 MPa absolute or greater, wherein the process is initiated by a start-up procedure comprising the steps of: i) providing a feed comprising a mixture of hydrogen and carbon monoxide gases, preferably in the form of a synthesis gas mixture, to a reactor containing a cobalt-containing Fischer-Tropsch synthesis catalyst, wherein the pressure inside the reactor is 3.5 MPa absolute or below; and ii) maintaining the feed to the reactor, removing a product stream comprising hydrocarbons and maintaining the pressure inside the reactor at 3.5 MPa absolute or below for at least 15 hours, preferably for at least 50 hours.

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