Alkali recovery furnace flue gas high-efficiency dust removal device and dust removal method

The invention relates to the technical field of flue gas dust removal, in particular to an efficient flue gas dust removal device and method for an alkali recovery furnace. The efficient flue gas dustremoval device for an alkali recovery furnace includes an alkali recovery furnace, an electrostatic dust collector and a chimney. The device further comprises a cooling tower and a wet-type electricdust collector, wherein the alkali recovery furnace, the electrostatic dust collector, the cooling tower, the wet-type electric dust collector and the chimney are sequentially connected, the cooling tower comprises a cooling tower body, an airflow uniform distribution assembly, a first spraying assembly and a demister, and the airflow uniform distribution assembly, the first spraying assembly andthe demister are sequentially arranged in the cooling tower body from bottom to top. According to the efficient flue gas dust removal device of the alkali recovery furnace provided by the embodiment of the invention, the flue g