Cyclone-water-curtain dust removing device suitable for recycling high-temperature tail gas with dust

The invention discloses a cyclone-water-curtain dust removing device suitable for recycling high-temperature tail gas with dust. The cyclone-water-curtain dust removing device comprises an outer hollow cylinder body, an inner hollow cylinder body, a central exhaust pipe and a spraying device. The outer hollow cylinder body is cylindrical. The inner hollow cylinder body is arranged inside the outer hollow cylinder body and comprises a first part, a second part and a third part in sequence from top to bottom, wherein the first part is cylindrical, a first interlayer is formed by the first part and the outer hollow cylinder body, the second part is conical, the third part is in a reverse cone shape, the lower end of the third part abuts against the inner wall of the outer hollow cylinder body, and a second interlayer is formed by the third part, the second part and the outer hollow cylinder body. A heat-exchange annular channel is formed between the central exhaust pipe and the first part, the central exhaust pipe is internally provided with an annular water pipe spiral from inside to outside, the annular water pipe is communicated with a first liquid inlet pipe, and the other end of the annular water pipe is communicated with the first interlayer; an annular air inlet pipe spiral from inside to outside is arranged outside the annular water pipe, one end of the annular air inlet pipe is tangentially communicated with an air inlet pipe, and the other end of the annular air inlet pipe is communicated with the second part. By means of the cyclone-water-curtain dust removing device, cyclone dust removing and water curtain dust removing are combined, and heat exchange between liquid and gas and recycling of heat and dust are achieved.