Acoustic Agglomeration Process of Fine Particles in a Resonance Structure

8th International Conference on Environmental Science and Technology

生态环境科学

Shi, Chen-Hao^1 ; Zhang, Jian^2 ; Zhao, Yun^3 ; Liang, Jie^1

College of Environmental Science and Engineering, Hunan University, Changsha

410082, China^1

School of Information Science and Engineering, Central South University, Changsha

410083, China^2

School of Optoelectronic Science and Engineering, National Defense Science and Technology University, Changsha

410073, China^3

关键词: Acoustic agglomeration;    Acoustic resonance;    Application prospect;    Different operating conditions;    Finite element simulation model;    Removal efficiencies;    Resonance structure;    Sound pressure level;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/78/1/012001/pdf
DOI  :  10.1088/1755-1315/78/1/012001

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

It was proved that the acoustic agglomeration technology has a good application prospect in the removal of fine particles. In this paper, a removal system of acoustic agglomeration is constructed by the acoustic resonance structure. With the finite element simulation model, the effect and condition of sound pressure level (SPL) increment of high intensity sound in the resonance structure are defined. In the experiment, the contrast of the sampling weight and particle size distribution changes of fine particles was compared under different operating conditions to examine the effect of acoustic agglomeration on the removal efficiency of fine particles. The results show the SPL increment of 10dB is obtained with SPL 145-165 dB when the working frequency is changed from 400 to 2000 Hz. Under the action of acoustic agglomeration, fine particles in the aerosol were significantly reduced, and the removal effect is markedly improved with the increase of SPL.