Self-cleaning type double-layer external expansion oil stain filtering exhaust pipe

Abstract

The invention discloses a self-cleaning type double-layer external expansion oil stain filtering exhaust pipe, and belongs to the field of flue gas filtration. The self-cleaning type double-layer external expansion oil stain filtering exhaust pipe comprises a pipe body. Air inlet pipes and air outlet pipes are fixed at left and right ends of the pipe body; the air inlet pipes and the air outlet pipes are communicated with the pipe body; oil stain and dust adsorption is performed for a long time, permeability become worse, then flue gas is difficult to discharge outwards in time after enteringthe space between the two segmented filter plates and the two segmented filter plates are expanded outwards; the plugging expansion section has higher elasticity, larger deformation can be generated towards the interior of the internal expansion liquid storage angle because of flue gas extrusion effect and the decontamination fluid flows out. The decontamination liquid can flow downwards to the filtering section through the drainage effect of the drainage wire so that greasy dirt particles on the filtering section are decomposed, the self-cleaning effect on the double-layer air filtering net is achieved, the continuous filtering capacity of the double-layer air filtering net can be maintained, and the filtering efficiency is improved.

Description

technical field [0001] The invention relates to the field of flue gas filtration, and more specifically relates to a self-cleaning double-layer external expansion oil dirt filter exhaust pipe. Background technique [0002] Smoke is a mixture of gas and smoke and is the main cause of air pollution in residential areas. The composition of the flue gas is very complex. The gas includes SO2, CO, CO2, hydrocarbons, and nitrogen oxides. The smoke includes fuel ash, coal particles, oil droplets, and high-temperature cracking products. Therefore, the pollution of flue gas to the environment is the compound pollution of various poisons. The harmfulness of smoke to the human body is related to the size of the particles. The most harmful to the human body is the floating dust with a diameter of less than 10 microns, especially the 1-2.5 micron floating dust is the most harmful. The air pollution of smoke and dust is closely related to meteorological conditions. , Atmospheric stabilit...

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Problems solved by technology

[0003] Based on the flue gas released in industrial production, especially in some industrial plants, the flue gas contains a large amount of oily dust, which needs to be adsorbed before being discharged. However, in the prior art, the adsorption of oily dust in the flue gas is generally carried out through a filter. Adsorption, but due to the strong adhesion of oil particles, the filter screen is easily blocked, resulting in poor permeability, and frequent oil cleaning is required, which affects the efficiency of flue gas filtration

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