Device and method for efficiently removing fine particulate matters in a multi-field partition manner

Abstract

The invention discloses a device and a method for efficiently removing fine particles in a multi-field partition manner. A box body structure with the same cross section structure size is adopted, andmain body channels are arranged in series in a manner that flow channel center lines coincide; the method comprises the steps of negative direct current pre-dedusting, primary acoustic agglomerationstrengthening, pulse charge coagulation and direct current bipolar coagulation, secondary acoustic agglomeration strengthening and negative direct current dedusting. Gravity settling, inertia separation and a virtual impactor effect are combined, the collision coagulation effect of fine particles is enhanced through multiple electric coagulation modes and the acoustoelectric synergistic effect, and efficient removal of the particles with the large particle size and the small particle size is achieved step by step in a regional mode. Through a parallel connection mode of pulse charge coagulation and direct-current bipolar coagulation, the partitioned electrocoagulation effect of particles with different particle sizes is achieved through the inertia effect and the virtual impactor effect, and meanwhile the trapping and removing effect of fine particles is enhanced through the ash removal and dust collection effect of the movable electrode plate. The fine particulate matter removal efficiency is high.

Description

technical field [0001] The invention relates to the technical field of flue gas dust removal, in particular to a device and method for efficiently removing fine particles in multi-field partitions. Background technique [0002] my country is a country that uses coal as its main energy source. While coal combustion provides us with heat and power, it also brings serious particle pollution. Among the sources of fine particles, emissions from coal-fired boilers account for a large part, especially It is a small and medium-sized industrial boiler and industrial kiln widely used in various industries. Due to the lack of corresponding environmental protection control equipment, the pollution is particularly serious. Aerosol particulate matter, especially fine particulate matter PM 2.5 After being discharged into the air, it will seriously affect people's daily life and work, and even threaten people's lives. Due to the small size and light weight of fine particles, they stay in t...

AI Technical Summary

Problems solved by technology

The agglomeration methods currently being studied include: electrical agglomeration, acoustic agglomeration, phase change coagulation growth, and chemical agglomeration, etc. Among them, the ability of electrical agglomeration is the strongest, but the agglomeration effect of traditional DC corona agglomeration or a single form of electrical agglomeration is not good. Obviously, it is necessary to further improve the removal effect of fine particles

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