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公开(公告)号：US11511992B2
公开(公告)日：2022-11-29
申请号：US16838856
申请日：2020-04-02
Applicant: ExxonMobil Research and Engineering Company
Inventor： Everett J. O'Neal , Anastasios I. Skoulidas , Zhiyan Wang
IPC: C01B3/38 , B01J8/04 , B01D53/047 , B01J19/24 , B01J38/40 , C01B3/48 , C01B3/56 , B01J12/00 , B01J23/34 , B01J23/92 , B01J35/04 , B01J38/14 , C01B3/40
Abstract: Systems and methods are provided for performing hydrocarbon reforming within a reverse flow reactor environment (or another reactor environment with flows in opposing directions) while improving management of CO2 generated during operation of the reactor. The improved management of CO2 is achieved by making one or more changes to the operation of the reverse flow reactor. The changes can include using an air separation unit to provide an oxygen source with a reduced or minimized content of nitrogen and/or operating the reactor at elevated pressure during the regeneration stage. By operating the regeneration at elevated pressure, a regeneration flue gas can be generated that is enriched in CO2 at elevated pressure. The CO2-enriched stream can include primarily water as a contaminant, which can be removed by cooling while substantially maintaining the pressure of the stream. This can facilitate subsequent recovery and use of the CO2.
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公开(公告)号：US20200317515A1
公开(公告)日：2020-10-08
申请号：US16838399
申请日：2020-04-02
Applicant: ExxonMobil Research and Engineering Company
Inventor： Everett J. O'Neal , Anastasios I. Skoulidas , Zhiyan Wang
Abstract: Systems and methods are provided for using a high heat capacity gas as at least a portion of the diluent during the regeneration step of a reverse flow reactor process. Instead of using nitrogen or air as the primary diluent gas, CO2 and/or H2O can be added as diluent gas for the regeneration step in the reaction cycle. Increasing the heat capacity of the diluent gas provides a reduction in the peak temperature within the reactor relative to the amount of fuel combusted during regeneration. This can allow for a reduction in the volume of diluent used during regeneration and/or an increase in the amount of fuel used. Reducing the volume of diluent can reduce the pressure drop during regeneration, which can provide a corresponding reduction in the amount of compression required for recycle of the diluent. Increasing the amount of fuel can allow for a corresponding increase in the amount of endothermic reaction performed during the reaction step.
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公开(公告)号：US20200331751A1
公开(公告)日：2020-10-22
申请号：US16838856
申请日：2020-04-02
Applicant: ExxonMobil Research and Engineering Company
Inventor： Everett J. O'Neal , Anastasios I. Skoulidas , Zhiyan Wang
Abstract: Systems and methods are provided for performing hydrocarbon reforming within a reverse flow reactor environment (or another reactor environment with flows in opposing directions) while improving management of CO2 generated during operation of the reactor. The improved management of CO2 is achieved by making one or more changes to the operation of the reverse flow reactor. The changes can include using an air separation unit to provide an oxygen source with a reduced or minimized content of nitrogen and/or operating the reactor at elevated pressure during the regeneration stage. By operating the regeneration at elevated pressure, a regeneration flue gas can be generated that is enriched in CO2 at elevated pressure. The CO2-enriched stream can include primarily water as a contaminant, which can be removed by cooling while substantially maintaining the pressure of the stream. This can facilitate subsequent recovery and use of the CO2.
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