Sticky dust trapping device

The utility model provides a sticky dust trapping device. The sticky dust trapping device is mainly applied to sticky dust in flue gas produced by kilns in the glass industry and comprises an electric precipitator and a denitration reactor, wherein an outlet flue of the electric precipitator and an inlet flue of the denitration reactor are communicated to form a channel, and inlet air doors, traps and outlet air doors are sequentially mounted on the channel in the extension direction from the electric precipitator to the denitration reactor. With the adoption of the sticky dust trapping device, the sticky dust can be fine trapped, so that follow-up risks of denitration catalyst blockage, alkali metal poisoning and catalyst structure instability are reduced, and the service life of a denitration catalyst is prolonged.