Depth washing dust removal device

The utility model discloses a depth washing dust removal device. The depth washing dust removal device mainly comprises a washing section flue, a circulating water pond, a washing spraying layer, a washing dust removal circulating pump, a washing dust removal demister washing water pump, an absorption tower demister washing water pump, a washing dust removal demister, a first washing spray head, a second washing spray head, a packing layer, a washing dust removal demister washing water collecting device and a process water supplement joint. The depth washing dust removal device is arranged at the downstream of a wet-process desulfurizing absorption tower, so that a part of powder dust can be continuously captured, and dust-containing liquid drops can be diluted; at last, mist drops in the flue gas are captured by virtue of the washing dust removal demister, the powder dust carrying quantity in the flue gas can be reduced, and the depth treatment of the flue gas can be realized. According to the depth washing dust removal device, the technical problem that the flue gas dust cannot reach the standard even cannot realize the ultra-low emission is effectively solved, a certain desulfuration effect can be realized, the investment cost is greatly reduced, the land consumption is reduced, and the relatively high flexibility of arrangement and mounting is realized.