a distributor for the equalization of flow rate of cyclones in closed cyclone systems installed in the interconnection of the cyclones of the disengager vessel of the gas - solid suspension of the fluid catalytic cracking processes is described , that distributes the gases exiting the first stage cyclones so as to promote a desirable and uniform flow rate of said gases through said space , besides absorbing the relative movements between the cyclones caused by the differential thermal expansion . the distributor of the invention secures a homogeneous accommodation of the gas - solid suspension in a connecting pipe , allowing a uniform cyclone operation in the next stage , no matter the geometry of the riser - cyclone set or of the downer - cyclone set .