Dust collector suitable for high-temperature dusty tail gas recovery

The invention discloses a dust collector suitable for high-temperature dusty tail gas recovery. The dust collector comprises an outer cylinder, a first hollow inner cylinder, a second hollow inner cylinder, an air inlet pipe, a spiral stirring device, a spiral disc, an outer-layer heat exchange pipe, an inner-layer heat exchange pipe and a spraying device, wherein the first hollow inner cylinder is arranged inside the outer cylinder, and is sequentially provided with a first part, a second part and a third part from top to bottom, a first interlayer is formed by the first part and the outer cylinder, and the first part is communicated with the outside; the second part is conical; the third part is shaped like an inverted cone, the lower end of the third part props against the inner wall of the outer cylinder so as to form a second interlayer together with the second part and the outer cylinder, and the third part is provided with a plurality of arc-shaped air discharging holes; the second hollow inner cylinder is arranged inside the first hollow inner cylinder; one end of the air inlet pipe tangentially penetrates through the first part, and the other end of the air inlet pipe is communicated with the outside; the spiral stirring device comprises a rotary shaft; the spiral disc spirally extends along the other end of the rotating shaft; the outer-layer heat exchange pipe winds to the upper part of the first part along the second part, and the lower end of the outer-layer heat exchange pipe is communicated with a liquid inlet pipe; and the inner-layer heat exchange pipe winds along the second hollow inner cylinder, and the upper end of the inner-layer heat exchange pipe is communicated with the outer-layer heat exchange pipe. The dust collector disclosed by the invention has high efficiency.