Catalytic reaction regeneration method for increasing yield of propylene

The invention relates to the technical field of catalytic conversion of petroleum hydrocarbons, and in particular relates to a fluidized catalytic reaction regeneration method for increasing yield ofpropylene, and provides a catalyst regeneration and catalyst circulation method. Catalytic raw material oil or a first raw material and light hydrocarbon or a second raw material respectively react ina raw material oil or first raw material reactor and a light hydrocarbon or second raw material reactor; a regenerated catalyst is used for raw oil or first raw material reaction, and a semi-regenerant is used for light hydrocarbon or second raw material reaction. The light hydrocarbon or second raw material reaction comprises low-temperature gasification and high-temperature catalytic cracking reaction. The heat and the semi-regenerant required by the light hydrocarbon or second raw material reactor are provided after gasification to realize three-zone catalyst regeneration in one regenerator. The method can obviousl