Spraying, de-acidifying and de-misting device for waste incineration tail gas

The utility model discloses a spraying, de-acidifying and de-misting device for waste incineration tail gas. The device comprises a spraying tower and a de-acidifying and de-misting tower, wherein a flue gas inlet is formed in the upper part of the spraying tower; an alkali liquor spraying pipe is arranged inside the spraying tower; two layers of rotational flow plates are arranged inside the de-acidifying and de-misting tower; a flue gas outlet and a washing opening are formed in the top of the de-acidifying and de-misting tower; a waste water outlet is further formed in the bottom of the de-acidifying and de-misting tower. The spraying, de-acidifying and de-misting device has the benefits that flue gas is sprayed and preliminarily neutralized through the spraying tower and then is de-acidified through the rotational flow plates in the de-acidifying and de-misting tower, and waste mist in the flue gas is removed through centrifugal movement, so that a great part of acid gas in the flue gas is removed, the flue gas keeps dried to the greatest extent before entering a cloth bag dust collector, and subsequent de-dusting operation is facilitated. The device is simple in structure, high in practicality and suitable for being used in treatment of the waste incineration tail gas, the tail gas can be effectively de-dusted, de-acidified and de-misted, and the treatment efficiency of the tail gas is greatly improved.