Flue gas separation device

Abstract

The invention discloses a flue gas separation device. The flue gas separation device comprises a mounting frame; a flue gas separator is arranged on the mounting frame in a supporting mode; a flue gasinlet allowing flue gas to be separated to enter the flue gas separator, a flue gas outlet allowing separated fine particle flue gas to enter downstream treatment and a flue gas exhaust port allowingseparated coarse particle flue gas to return to a circulating fluidized bed again are formed in the flue gas separator; a shock wave air cannon is further arranged on the mounting frame in a supporting mode; the blasting end of the shock wave air cannon communicates with a flue gas channel of the flue gas separator; and the shock wave air cannon is used for discharging instant air shock waves tothe flue gas channel according to a set frequency so as to crush bonded ash blocks hardened on the wall of the flue gas channel into return ash, and then the return ash is discharged into the circulating fluidized bed through the flue gas exhaust port. In the flue gas separation device, the instantaneous air shock waves can also effectively prevent flue gas from hardening on the wall of the flue gas channel during separation, so that less bonded ash blocks are formed, flue gas is smoothly discharged from the flue gas channel, the amount of return ash returned to a hearth is increased, and a boiler is stable in combustion.

Description

technical field [0001] The invention relates to the technical field of biomass generator sets, in particular to a flue gas separation device. Background technique [0002] In the biomass generator set, the furnace is connected with a flue, and the flue gas produced by the combustion of biomass fuel in the furnace enters the flue, and then enters the separation device through the flue, and the flue gas is separated under the action of the separation device. The flue gas of the particles continues to move forward after exiting the separation device, and enters the inertial separator and / or bag filter system installed downstream, while the flue gas of the coarser particles falls into the flue gas separator, and then is separated by the flue gas The device enters the return material bed, and returns to the furnace for combustion under the action of the circulating return material of the return material bed. [0003] Since the flue gas contains silicon dioxide, it is easy to for...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a flue gas separation device to solve the technical problems that the existing flue gas separator is easy to block, which leads to unstable combustion of the boiler and increased number of shutdowns

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