DEVICE FOR REGENERATION, DEVICE FOR PRODUCING LOW-CARBON OLEFINS AND THEIR APPLICATION Russian patent published in 2024 - IPC C07C1/20 C07C11/02 B01J29/90 B01J8/24 B01J8/26 B01J38/06 

FIELD: olefins.

SUBSTANCE: invention relates to a regeneration device for activating a catalyst to produce low-carbon olefins from an oxygen-containing compound, containing the first regenerator and the second regenerator. The first regenerator contains the second activation zone, the first activation zone and a gas-solid separation zone from bottom to top. The second activation zone communicates in the axial direction with the gas-solid separation zone. The first activation zone is located at the periphery of the connection between the second activation zone and the gas-solid separation zone, and the first activation zone communicates with the second activation zone. The first activation zone is an annular cavity, n partitions are radially installed in the first activation zone, and n partitions divide the first activation zone into n subzones of the first activation zone. In each of the n-1 partitions, a hole is formed for circulation of the catalyst in such a way that it is possible for the catalyst entering the first activation zone to flow in a circle. The first activation zone of the first regenerator is connected by a pipeline to the second regenerator in such a way that it is possible to supply the catalyst located in the first activation zone to the second regenerator and the second regenerator is connected by a pipeline to the gas-solid separation zone of the first regenerator in such a way that it is possible to supply the catalyst, located in the second regenerator, into the gas-solid separation zone. The invention also relates to a device and method for producing low-carbon olefins from an oxygen-containing compound.

EFFECT: improved selectivity for low-carbon olefins and atomic efficiency of the technology for processing methanol into olefins (methanol-to-olefins, MTO).

10 cl, 2 dwg, 4 ex