METHOD AND APPARATUS FOR MORE EFFICIENT REMOVAL OF CONTAMINANTS IN FLUID CATALYTIC CRACKING PROCESSES Russian patent published in 2020 - IPC C10G11/18 B01J8/24 B01J23/90 B01J27/28 B01J38/30 B01J38/72 

FIELD: chemistry.

SUBSTANCE: invention relates to a system for hydrocarbon cracking, comprising: a first reactor for contacting the cracking catalyst with hydrocarbon feedstock for converting at least a portion of the hydrocarbon feedstock into lighter hydrocarbons; separator for separation of lighter hydrocarbons from used cracking catalyst; a feed pipeline for feeding the separated spent cracking catalyst from the separator to the catalyst regenerator; pipeline for catalyst for transportation of part of spent cracking catalyst from catalyst regenerator to apparatus for removal of contaminants; apparatus for removing contaminants for contacting spent catalyst with contaminant-trapping additive having average particle size and/or density exceeding those of cracking catalyst; a second separator for separating the head stream from the contaminant removal apparatus into a first stream comprising a cracking catalyst and a lifting gas, and a second stream containing the contaminant trapping additive; a recirculation pipeline for transporting the contaminant trapping the additive recovered in the second separator to the contaminant removal apparatus; pipeline of bottom product for extraction of contaminant trapping from device for removal of contaminants; and a pipeline for transporting the first stream to the catalyst regenerator. Invention also relates to a method of removing contaminants from a catalyst, a regeneration method and a method of cracking hydrocarbons, as well as a system for separating a contaminant trap.

EFFECT: proposed invention allows efficient removal of contaminants from catalyst.

18 cl, 6 dwg