Separation type acoustic agglomeration suspended fine particle emission reduction system based on resonant cavity

Abstract

The invention discloses a separation type acoustic agglomeration suspended fine particle emission reduction system based on a resonant cavity. A closed coupling cavity (5) is coupled to a resonant agglomerating chamber (7) through a length adjustable short pipe (8), the closed coupling cavity (5) is connected with an electric-gas modulation sound generation head (3) through an index model cylinder (4), and the electric-gas modulation sound generation head (3) is connected with a signal generator and a power amplifier (20); an exhaust port (9) is formed in the closed coupling cavity (5); a bent thin-wall pipeline (6) is arranged in the resonant agglomerating chamber (7). The closed coupling cavity is coupled to the resonant agglomerating chamber through the length adjustable short pipe, and the resonance frequency of the resonant agglomerating chamber can be made to be equal to the optimal agglomerating frequency of particles in smoke by adjusting the length of the short pipe. Under the action of sound waves, relative velocity is generated through vibration of particles in smoke in the bent thin-wall pipeline, aggregates with large particle size are formed through collision and agglomeration, and the aggregates settle or are eliminated by conventional dedusting equipment. The system is small in occupied space, low in energy consumption, easy to operate, and high in expandability and dedusting efficiency.

Description

technical field [0001] The invention relates to a set of device and method for removing suspended fine particles in flue gas, and belongs to the technical field of dust removal for boiler equipment in pollution control equipment. Background technique [0002] In recent years, in many cities in China, especially in North China, the frequency of hazy weather has become higher and higher, and the pollution has become more and more serious. Particulate matter has become the main pollutant in major cities, and it is also an important pollutant in indoor air. The emission of suspended fine particles, especially PM2.5 (fine suspended particles with an aerodynamic diameter less than 2.5 microns), is the main source of particulate matter in air pollution. Fine particles are usually enriched with harmful substances, which can easily cause serious harm to human health and the environment. [0003] At present, the dust removal equipment commonly used in industry is mainly mechanical se...

AI Technical Summary

Problems solved by technology

On the one hand, in industrial applications, the cross-section of the resonant agglomeration chamber is very large. In order to achieve a relatively ideal removal effect, it is necessary to provide a high sound power input, which makes the energy consumption and operating cost of the system higher, and it is difficult to be used in actual industrial applications. accept

On the other hand, in the case of large flue gas flow, equal-section pipes will occupy a large site space, and the system is not compact enough

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