Helmholtz resonator array based suspended particles sound wave agglomerating system and method

Abstract

The invention discloses a Helmholtz resonator array based suspended particles sound wave agglomerating system and method. The Helmholtz resonator array based suspended particles sound wave agglomerating system comprises a sound source device, a Helmholtz resonance device, a control device and a protection device, wherein the sound source device comprises a signal generator, a signal amplifier, a sound source, a horn and a standing wave tube which are connected sequentially; the Helmholtz resonance device comprises a short pipe, a flue and a Helmholtz resonator; the control device comprises a controller and three groups of piston components; the protection device comprises a cyclone dust collector and a soundproofing wedge which are arranged on the flue; the signal generator generates sound wave to drive the sound source by the signal amplifier, the low-frequency sound wave is radiated to the standing wave tube by the horn, and the first piston component moves to adjust the volume of the Helmholtz resonator, so as to make the resonance frequency of the flue be the same as the frequency of the low-frequency sound wave. The system and method have the advantages of high agglomerating efficiency, low energy consumption, simple operation, and reasonable structure.

Description

technical field [0001] The invention relates to the technical field of dust removal, in particular to a suspended particle acoustic agglomeration system based on a Helmholtz resonator array. Background technique [0002] Suspended fine particles refer to solid particles (also known as PM2.5) with an aerodynamic particle size of less than 2.5 μm in the atmosphere. With the rapid development of my country's national economy and the massive consumption of fossil fuels, PM2.5 has become the main pollutant that pollutes the air environment in my country's urban areas, which has aroused the close attention of the party and state leaders and the deep concern of the people. Suspended fine particles are rich in a variety of toxic trace substances, and they are transported in the atmosphere for a long distance and for a long time, which is likely to have a serious impact on the human body and the environment. [0003] Conventional dust removal technologies widely used in industry can...

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Problems solved by technology

The method of using wet dust removal has the disadvantages that it is difficult to recycle and process the materials used. Such waste is very easy to cause the transfer of pollution and the waste of energy caused by the high temperature gas changing from high temperature to normal temperature, so it is seldom used. The application of dry dust collector is more Extensive, such as conventional removal technologies such as cyclone separation, although the removal efficiency of these conventional dust removal technologies for removing suspended coarse particles (>10μm) is very high, but the removal efficiency for suspended fine particles (<2.5μm) is very low

[0004] At present, various dust removal methods cannot effectively remove respirable suspended fine particles

One of the methods is to use the sound wave agglomeration of external seed particles to remove fine particles, which is easy to cause the external seed particles and suspended fine particles to be adsorbed to the pipeline to avoid, it is inconvenient to remove, and it is easy to cause corrosion to the device, and when the sound intensity in the device is higher than 160dB It is very easy to cause turbulence in the sound field, breaking the newly formed aggregates, and it is difficult to ensure long-term stable and reliable work; other methods still exist for efficient collection of weakly magnetic particles, as well as removal and demagnetization of collected particles attached to the surface big problem

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