Pulverized coal dense-thin separation device

The invention discloses a pulverized coal dense-thin separation device, and belongs to the technical field of boiler combustion. The device comprises a separation elbow, wherein an inlet separation flow guide structure and an outlet separation flow guide structure are arranged in the separation elbow; the outlet separation flow guide structure comprises a plurality of outlet separation baffles; the outlet separation baffles comprise an upper fixed outlet separation baffle, a lower fixed outlet separation baffle and at least one adjustable outlet separation baffle; the inlet separation flow guide structure comprises a first-stage inlet separation baffle or a plurality of stages of inlet separation baffles, and the plurality of stages of inlet separation baffles comprise a first-stage fixed inlet separation baffle and other stages of adjustable inlet separation baffles. The device is simple in structure, long in service life, safe and reliable, and the operation energy consumption of a power plant can be greatl