FIELD: technological processes.
SUBSTANCE: reaction device comprises a dense-phase fluidized bed reactor (2), a cyclone separator (3), a stripper (5), a lifting pipe (7), a dense-phase fluidized bed regenerator (10), a cyclone separator (11), a stripper (13), and a lifting pipe (15). The reactor with a dense-phase fluidized bed (2) is divided into n (n≥2) secondary reaction zones by the material flow regulator (17), and the regenerator (10) is divided into m (m≥2) secondary regeneration zones by the material flow regulator (17).
EFFECT: improved distribution of carbon deposits on the catalyst and increased selectivity for light olefins.
7 cl, 5 dwg, 3 ex
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