INSTALLATION FOR CATALYTIC CRACKING WITH FLUIDISED BED Russian patent published in 2014 - IPC C10G11/18 B01J8/18 

FIELD: chemistry.

SUBSTANCE: invention relates to catalytic cracking with a fluidised bed. The invention deals with a method which includes the following stages: a) functioning of a reaction zone, which contains at least one standpipe under conditions, contributing to obtaining olefins, and into the said at least one standpipe supplied are: i) the first raw material with a boiling temperature from 180 to 800°C; ii) the second raw material, which contains one or more C₄ ⁺-olefins, containing butanes; and iii) the third raw material, containing oligomerised light olefins or a ligroin flow, which contains from 20 to 70 wt % of one or more C₅-C₁₀-olefins; b) conversion of olefins in the second raw material into propylene; c) separation of the mixture from one or more reaction products in the separation zone; and d) extraction of one or more products in the division zone.

EFFECT: increased output of light olefins, in particular propylene.

10 cl, 7 dwg, 1 ex