公开(公告)号：US11746011B2

公开(公告)日：2023-09-05

申请号：US16838477

申请日：2020-04-02

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Everett J. O'Neal ,  Anastasios I. Skoulidas

IPC: C01B3/38 ,  B01J8/04 ,  B01J19/00 ,  B01J19/24

CPC classification number: C01B3/38 ,  B01J8/0438 ,  B01J19/0013 ,  B01J19/2445 ,  B01J2219/00038 ,  B01J2219/00157 ,  C01B2203/0233 ,  C01B2203/0811 ,  C01B2203/1241

Abstract: Systems and methods are provided for improving the operation of groups of reverse flow reactors by operating reactors in a regeneration portion of the reaction cycle to have improved flue gas management. The flue gas from reactor(s) at a later portion of the regeneration step can be selectively used for recycle back to the reactors as a diluent/heat transport fluid. The flue gas from a reactor earlier in a regeneration step can be preferentially used as the gas vented from the system to maintain the desired volume of gas within the system. This results in preferential use of higher temperature flue gas for recycle and lower temperature flue gas for venting from the system. This improved use of flue gas within a reaction system including reverse flow reactors can allow for improved reaction performance while reducing or minimizing heat losses during the regeneration portion of the reaction cycle.

公开(公告)号：US11465903B2

公开(公告)日：2022-10-11

申请号：US16838793

申请日：2020-04-02

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Everett J. O'Neal ,  Brian M. Weiss ,  Anastasios I. Skoulidas

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 using oxycombustion to provide heat within a reverse flow reactor environment. The oxygen for the oxycombustion can be provided by oxygen stored in an oxygen storage component in the reactor. By using an oxygen storage component to provide the oxygen for combustion during the regeneration step, heat can be added to a reverse flow reactor while reducing or minimizing addition of diluents and while avoiding the need for an air separation unit. As a result, a regeneration flue gas can be formed that is substantially composed of CO2 and/or H2O without requiring the additional cost of creating a substantially pure oxygen-containing gas flow.