Method for increasing yield of propylene and aromatic hydrocarbon by adopting moving bed technology

The invention discloses a method for increasing the yield of propylene and aromatic hydrocarbon by adopting a moving bed technology. The method for increasing the yield of propylene and aromatic hydrocarbon by adopting the moving bed technology comprises the following steps: (1) introducing raw materials for a first reaction zone and a diluent into the first reaction zone to be contacted and reacted with an A-type molecular sieve based catalyst, wherein a first reaction zone material flow comprises hydrogen, C1-C5 hydrocarbon, an aromatic hydrocarbon component and a C5 or above non-aromatic hydrocarbon component; (2) treating the first reaction zone material flow, then introducing the treated first reaction zone material flow into a separation zone 1 to be separated, mixing one part of return material of the separation zone 1 with the first reaction zone raw materials in ratio, and introducing feedstock for a separation zone 2 into a separation zone 2 to be separated; and (3) introducing raw materials for a second reaction zone, a diluent and the rest return material, obtained in the step (2), of the separation zone 1 into the second reaction zone to be contacted with a molecular sieve based catalyst B, carrying out aromatization reaction for producing a second reaction zone material flow, and mixing the second reaction zone material flow with the first reaction zone material flow. The method for increasing the yield of propylene and aromatic hydrocarbon by adopting the moving bed technology has the advantages that on one hand, the catalyst stability is improved, and on the other hand, flexible yield increase of propylene and aromatic hydrocarbon is realized through multi-reaction zone regulation and circular hydrocarbon selective reprocessing.