A flue gas purification device at the tail of a fluidized boiler

Abstract

The invention relates to a tail flue gas purification device for a fluidized boiler. The tail flue gas purification device comprises a flue gas inlet pipe, a cooling pipe, a separating pipe and a settling pipe, wherein the axis of a cylindrical pipeline of the separating pipe is perpendicular to the ground, and the opening end of the cylindrical pipeline is arranged towards the ground; the flue gas inlet pipe is arranged on the side wall of the cylindrical pipeline, and one end of the flue gas pipe is communicated with the inside of the cylindrical pipeline; the other end of the flue gas pipe is communicated with a tail flue of the fluidized boiler, and the cooling pipe is arranged at the closed end of the top of the separating pipe; one end of the cooling pipe is communicated with the inside of the separating pipe, and a spraying assembly is arranged in the cooling pipe; a separator is arranged on the wall surface of the separating pipe, and comprises a plurality of filter plates which are arranged on the inner wall of the separating pipe in a zigzag staggering manner, and an exhaust duct is arranged at the bottom of the separating pipe. The flue gas is absorbed by water, and the flue gas can be separated from particulate matter and soluble impurities by a separating mechanism for filtering.

Description

Technical field [0001] The invention relates to a flue gas purification device at the tail of a fluidized boiler, belonging to the field of exhaust gas purification equipment of a fluidized boiler. Background technique [0002] In a fluidized boiler, although the tail flue gas passes through the cyclone separator to separate most of the smoke and fly ash, a large part of the flue gas will still be discharged into the atmosphere along with the tail flue gas, causing Environmental pollution. At the same time, there is a lack of corresponding purification equipment for sulfur dioxide, sulfur trioxide and other gases, which will also be discharged into the atmosphere along with tail flue gas, which will cause serious environmental pollution; at the same time, these fumes and acidic air will also corrode the chimney. On the inner wall, agglomeration and local corrosion occur on the inner wall of the chimney, making the flow resistance of the chimney larger and lowering its strength, w...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to overcome the technical problems of low ash removal efficiency and large flow resistance of traditional equipment in the prior art, and provide a flue gas purification device at the tail of a fluidized boiler

Images