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公开(公告)号：US11851328B2
公开(公告)日：2023-12-26
申请号：US16838399
申请日：2020-04-02
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
CPC classification number: C01B3/384 , B01D53/047 , B01J8/0492 , B01J8/0496 , B01J12/007 , B01J19/2465 , B01J23/34 , B01J23/92 , B01J35/04 , B01J38/14 , B01J38/40 , C01B3/40 , C01B3/48 , C01B3/56 , B01D2256/16 , B01D2257/502 , B01D2257/504 , B01D2257/80 , C01B2203/0233 , C01B2203/0283 , C01B2203/042 , C01B2203/0475 , C01B2203/0822 , C01B2203/1094 , C01B2203/1241
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：US12195676B2
公开(公告)日：2025-01-14
申请号：US18091095
申请日：2022-12-29
Inventor： Colin Lee Beswick , Bing Du , Daniel J. Garcia , Hyung Rae Kim , Prateek Mehta , Arun K. Sharma , Xiaochun Xu , Masaaki Sugita , William J. Knaeble , Zhiyan Wang
Abstract: Systems and methods are provided for expanding the operating envelope for an FCC reaction system while also reducing or minimizing the net environmental CO2 emissions associated with the FCC reaction system and/or the resulting FCC products. In some aspects, reducing or minimizing net environmental CO2 emissions can be achieved during processing of unconventional feeds, such as feeds that are traditionally viewed as having insufficient tendency to coke in order to maintain heat balance within an FCC reaction system. In other aspects, this can correspond to expanding the production of diesel within an FCC reaction system by modifying the reaction conditions in a manner that can cause a reaction system to fall out of heat balance (relative to the heat needed to maintain a target operating temperature) even when using conventional feeds.
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公开(公告)号：US12152202B2
公开(公告)日：2024-11-26
申请号：US18091127
申请日：2022-12-29
Inventor： Colin Lee Beswick , Bing Du , Daniel J. Garcia , Hyung Rae Kim , Prateek Mehta , Arun K. Sharma , Xiaochun Xu , Masaaki Sugita , William J. Knaeble , Zhiyan Wang
Abstract: Systems and methods are provided for expanding the operating envelope for an FCC reaction system while also reducing or minimizing the net environmental CO2 emissions associated with the FCC reaction system and/or the resulting FCC products. In some aspects, reducing or minimizing net environmental CO2 emissions can be achieved during processing of unconventional feeds, such as feeds that are traditionally viewed as having insufficient tendency to coke in order to maintain heat balance within an FCC reaction system. In other aspects, this can correspond to expanding the production of diesel within an FCC reaction system by modifying the reaction conditions in a manner that can cause a reaction system to fall out of heat balance (relative to the heat needed to maintain a target operating temperature) even when using conventional feeds.
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