Method for enhancing propylene production by catalyzing and splitting coking waxy oil and modifying coker naphtha

The invention discloses a method for selectively enhancing propylene production and producing high-octane petrol by catalyzing and splitting coking waxy oil and modifying coker naphtha. The method belongs to technological improvement of oil refining chemical engineering. A two-section rising tube reactor having a feeding structure combined with dense-phase fluidization delivery bed and a selective catalyst having prolific propylene are adopted, and the aim of enhancing propylene production is realized by controlling the feeding mode of reactive materials and the reaction conditions. The invention is characterized by organically combining catalyzing and splitting coking waxy oil with modifying coker naphtha to produce propylene with high yield and high selectivity, and simultaneously produce high-octane petrol, thus solving the difficulty in enhancing propylene production by catalyzing and splitting pure coking waxy oil, and that in producing high-octane petrol modifying coker naphtha.