Catalyst particle pre-separator, and fluidized bed reactor and applications thereof

The invention relates to the field of sulfur-containing hydrocarbon desulphurization, and discloses a catalyst particle pre-separator, and a fluidized bed reactor and applications thereof. The catalyst particle pre-separator comprises: a pre-separator main body, wherein a cylinder comprises a tangentially arranged guide wind inlet; and a wind outlet pipe, wherein the wind outlet pipe is inserted into the center of the top portion of the pre-separator main body, extends downward to the internal space of the pre-separator main body, and extends upward out of the top portion of the pre-separatormain body, the lower portion of the wind outlet pipe is provided with a guide wind outlet, and the guide wind outlet is at least three through grooves symmetrically arranged on the side wall of the lower portion of the wind outlet pipe, and is used for communicating the internal space and the external space of the wind outlet pipe. According to the present invention, the fluidized bed reactor canpre-separate rare-phase du