Sound generation mode and effect of acoustic soot blower in acoustic soot blower

The acoustic dust remover converts the air pressure into kinetic energy and converts it into acoustic energy, and transmits the energy to the dust to make the dust vibrate. Causes dust displacement. This principle is used to clean the dust, but the sound wave dust remover has different sound generation methods and different effects. Sonic ash removal

Rotary flute type: it is an earlier type developed in China, with adjustable audio frequency. However, due to its complex structure and motor, it has many faults and poor stability.

Hartmann whistle type: because the diameter is installed in the ash deposition space (such as flue), it is always corroded and worn by the high temperature of flue gas, and its service life is short; The nozzle is easy to be blocked, and because the audio frequency is higher, the sound energy attenuates faster and the action radius is smaller, so there are more units installed in the same situation.

Magnetic float level meter

The acoustic ash removers of Sweden Kekang Sound Power Company and the American bha Company are all vibration plate type. In view of the shortcomings of the two types of acoustic ash cleaners mentioned above, the zhk series vibrating plate acoustic ash cleaners have been developed by Beijing Zhongke Acoustic Energy Saving and Environmental Protection New Technology Co., Ltd. with the Chinese Academy of Sciences as the technical backing. The practice has proved that they are better than the ikt230/220 imported from Sweden.

The acoustic dust remover is composed of air source, filter, pressure reducing valve, solenoid valve, electric control unit, acoustic energy device, resonant element, electrostatic precipitator and dust collector. The core is the acoustic energy device, which can emit low frequency and high energy acoustic waves. So, what are the effects of acoustic ash remover?

When the acoustic dust remover works normally, the electrostatic precipitator operates normally, the smoke exhaust is stable, and the electric field current is stable. Low frequency sound wave, wavelength, large amplitude, slow attenuation (not easy to be absorbed). The low-frequency sound wave radiation angle is spherical, 360 degrees, that is, multi-directional. It can spread in solid, liquid and gas. Just like light, it can be reflected and refracted, as well as electromagnetic wave can be diffracted, with strong low-frequency reflection and diffraction ability. These are the physical characteristics of sound waves. The acoustic wave for ash cleaning is selected at low frequency. It can be seen that the acoustic wave with a certain strength at low frequency can lead to the space with ash and slagging (such as boiler flue, heat exchanger, electrostatic precipitator, bag type dust collector). The acoustic wave plays the role of "acoustic fatigue" on ash and slag, that is, due to the repeated effect of acoustic vibration, it is applied to ash and slag to change the tension and compression cycle. When a certain number of cycle stress is reached, the combination of ash and slag is destroyed due to fatigue. At the same time, due to the reflection, transmission and diffraction of sound waves.