Device and method for reducing emission of fine particles by acoustic coagulation of compact high-velocity filter

Abstract

The invention discloses a compact high-velocity filter screen acoustic coagulation fine particle emission reduction device and method, comprising an acoustic wave generator, a parabolic baffle plate, a coagulation chamber, an atomizer, a vibrating dust removal device, a sound-permeable plate, and a filter screen , induced draft fan, retractable board, ash hopper. The invention focuses sound waves based on the curved surface reflection principle to increase the sound pressure level in a designated area, and forms multiple standing wave sound fields in the coagulation chamber to increase the relative collision probability of fine particles in the coagulation chamber. In the present invention, the coagulation chamber is divided into N-shaped channels through the sound-transmitting board, which increases the length of the flue gas channel, increases the action time of fine particles under the sound field, and further increases the probability of particle collisions. Therefore, the present invention increases the probability of collision between fine particles through multiple methods, can effectively induce agglomeration, and achieves the purpose of removing the amount of fine particles in the airflow.

Description

technical field [0001] The invention relates to the technical field of manufacturing pollution control equipment, in particular to a device and method for reducing emission of compact high-velocity filter screens by acoustically agglomerating fine particles Background technique [0002] Pollutants emitted by chemical combustion energy systems into the atmosphere are increasing day by day. Suspended fine particles represented by PM2.5 are rich in toxic substances and stay in the atmosphere for a long time and have a long transportation distance, which not only reduces the visibility of the atmosphere, but also affects traffic and the environment. And the climate, and particles with a particle size smaller than PM10 can enter the human respiratory tract through the nose and mouth, and the finer PM2.5 can enter the human alveoli and even the blood circulation system, directly leading to cardiovascular diseases and other diseases, which have short-term and harmful effects on huma...

AI Technical Summary

Problems solved by technology

[0003] The coagulation efficiency of fine particles is not high in the general acoustic coagulation technology environment, and the general acoustic coagulation method often needs to be combined with an external traditional dust removal device to achieve the purpose of partially removing fine particles in the airflow

To improve the removal efficiency of fine particles, it can be achieved by increasing the sound pressure level, but this increases the energy consumption of the entire system, which is not conducive to energy saving and promotion

The way of external traditional dust removal device not only increases the cost, but also increases the volume of the whole system, which is not conducive to the installation and layout of the system

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