FLUIDIZED BED REACTOR, DEVICE AND THEIR APPLICATION Russian patent published in 2023 - IPC B01J8/24 C07C1/20 C07C11/02 

FIELD: coking.

SUBSTANCE: invention is related to a fluidized bed reactor including a main shell and a coke control zone shell; the main shell includes an upper shell and a lower shell; the upper shell encloses the gas-solid separation zone, and the lower shell encloses the reaction zone; the reaction zone is in axial communication with the gas-solid separation zone; the shell of the coke content control zone is located along the circumference on the outer wall of the main shell; the shell of the coke content control zone and the main shell cover the annular cavity, and the annular cavity represents the coke content control zone; n partitions are installed radially in the coke control zone, and these n partitions divide the coke control zone into n subzones of the coke control zone, where n is an integer, n has a range of values: 2≤n≤10; subzones of the coke content control zone are provided with an input for raw material for coke content control; and a catalyst circulation hole is formed in each of the n-1 partitions, so that the catalyst entering the coke content control zone flows in an annular direction. The invention is also related to a device and method for producing low-carbon olefins.

EFFECT: ability to control the coke content, the distribution of coke content and coke particles in the catalyst used in the processing of dimethyl ether/methanol into olefins.

10 cl, 4 ex, 2 dwg