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Zhang Z, Deng Z, Luo P, Shen G, Zhang S. Review of Acoustic Agglomeration Technology Research. ACS OMEGA 2024; 9:21690-21705. [PMID: 38799352 PMCID: PMC11112563 DOI: 10.1021/acsomega.3c08815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 04/27/2024] [Accepted: 04/30/2024] [Indexed: 05/29/2024]
Abstract
Acoustic agglomeration is employed as a precursor technique that modifies the sound field of fine particles to increase their size, thereby facilitating more efficient emission control. This paper reviews progress in the field of acoustic agglomeration technology, clarifies the mechanisms at play within the acoustic agglomeration process, and outlines its applicability in both gas-liquid and gas-solid phases. Furthermore, it analyzes the factors impacting the efficacy of acoustic agglomeration, summarizes the numerical simulation research of acoustic agglomeration, and proposes directions for technological enhancement.
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Affiliation(s)
- Zerun Zhang
- School of Energy, Power and
Mechanical Engineering, North China Electric
Power University, Beijing 102206, China
| | - Zhixiao Deng
- School of Energy, Power and
Mechanical Engineering, North China Electric
Power University, Beijing 102206, China
| | - Pei Luo
- School of Energy, Power and
Mechanical Engineering, North China Electric
Power University, Beijing 102206, China
| | - Guoqing Shen
- School of Energy, Power and
Mechanical Engineering, North China Electric
Power University, Beijing 102206, China
| | - Shiping Zhang
- School of Energy, Power and
Mechanical Engineering, North China Electric
Power University, Beijing 102206, China
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Zhao B, Xiao P, Li S, Liu X, Lin H, Yan D, Chen Z, Chen L. Study on the influence pattern and efficiency enhanced mechanism of acoustic-chemical spray dust reduction. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 900:165913. [PMID: 37527714 DOI: 10.1016/j.scitotenv.2023.165913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 07/18/2023] [Accepted: 07/28/2023] [Indexed: 08/03/2023]
Abstract
To study the influence pattern and efficiency enhanced mechanism of acoustic-chemical spray method on dust reduction, a self-developed acoustic excitation test platform, viscosity test, surface tension experiment and sinking experiments were used to investigate the chemical spray properties and the wetting behavior of coal dust excited by acoustic waves. The self-developed acoustic-chemical spray dust reduction simulation platform was used to study the influence of acoustic waves on coal dust reduction effect and its efficiency enhanced mechanism. The results showed that the surface tension and viscosity of the chemical spray solution fluctuated between 0.4 mN/m and 0.4 mPa·s along with the variations in acoustic wave frequency and sound pressure level (SPL), thereby confirming that acoustic waves had on effected on chemical spray solution properties. However, the wetting time of the chemical spray solution on coal dust increased by 33.64 % at an acoustic frequency (f) of 1300 Hz and SPL of 120 dB because of the liquid interface vibrations caused by acoustic waves. With an increasing of acoustic frequency, the dust reduction efficiency demonstrated a parabolic trend and reached its maximum value at f = 1300 Hz. The dust reduction efficiency also increased exponentially along with increasing SPL. Acoustic waves not only increased the collision frequency between particles and droplets by changing the trajectory of dust but also accelerated the wetting and agglomeration effect of chemical spray reagents on coal dust by causing vibrations at the gas-liquid interface, thereby enhancing the dust reduction efficiency. Compared to the dust reduction efficiency of chemical spray technology, the total dust reduction efficiency was increased by 8.53 %, and the respirable dust reduction efficiency was increased by 21.93 %. The effect of acoustic waves on the respirable dust reduction efficiency was more significant than that on total dust.
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Affiliation(s)
- Bo Zhao
- College of Safety Science and Engineering, Xi'an University of Science & Technology, Xi'an, Shaanxi 710054, China; Key Laboratory of Western Mine Exploitation and Hazard Prevention Ministry of Education, Xi'an University of Science and Technology, Xi'an, Shaanxi 710054, China; Western Engineering Research Center of Mine Gas Intelligent Drainage for Coal industry, Xi'an, Shaanxi 710054, China.
| | - Peng Xiao
- College of Safety Science and Engineering, Xi'an University of Science & Technology, Xi'an, Shaanxi 710054, China; Key Laboratory of Western Mine Exploitation and Hazard Prevention Ministry of Education, Xi'an University of Science and Technology, Xi'an, Shaanxi 710054, China; Western Engineering Research Center of Mine Gas Intelligent Drainage for Coal industry, Xi'an, Shaanxi 710054, China.
| | - Shugang Li
- College of Safety Science and Engineering, Xi'an University of Science & Technology, Xi'an, Shaanxi 710054, China; Key Laboratory of Western Mine Exploitation and Hazard Prevention Ministry of Education, Xi'an University of Science and Technology, Xi'an, Shaanxi 710054, China; Western Engineering Research Center of Mine Gas Intelligent Drainage for Coal industry, Xi'an, Shaanxi 710054, China
| | - Xiaoxiao Liu
- College of Safety Science and Engineering, Xi'an University of Science & Technology, Xi'an, Shaanxi 710054, China; Key Laboratory of Western Mine Exploitation and Hazard Prevention Ministry of Education, Xi'an University of Science and Technology, Xi'an, Shaanxi 710054, China; Western Engineering Research Center of Mine Gas Intelligent Drainage for Coal industry, Xi'an, Shaanxi 710054, China
| | - Haifei Lin
- College of Safety Science and Engineering, Xi'an University of Science & Technology, Xi'an, Shaanxi 710054, China; Key Laboratory of Western Mine Exploitation and Hazard Prevention Ministry of Education, Xi'an University of Science and Technology, Xi'an, Shaanxi 710054, China; Western Engineering Research Center of Mine Gas Intelligent Drainage for Coal industry, Xi'an, Shaanxi 710054, China
| | - Dongjie Yan
- College of Safety Science and Engineering, Xi'an University of Science & Technology, Xi'an, Shaanxi 710054, China; Key Laboratory of Western Mine Exploitation and Hazard Prevention Ministry of Education, Xi'an University of Science and Technology, Xi'an, Shaanxi 710054, China; Western Engineering Research Center of Mine Gas Intelligent Drainage for Coal industry, Xi'an, Shaanxi 710054, China
| | - Zixi Chen
- College of Safety Science and Engineering, Xi'an University of Science & Technology, Xi'an, Shaanxi 710054, China; Key Laboratory of Western Mine Exploitation and Hazard Prevention Ministry of Education, Xi'an University of Science and Technology, Xi'an, Shaanxi 710054, China; Western Engineering Research Center of Mine Gas Intelligent Drainage for Coal industry, Xi'an, Shaanxi 710054, China
| | - Liping Chen
- College of Safety Science and Engineering, Xi'an University of Science & Technology, Xi'an, Shaanxi 710054, China; Key Laboratory of Western Mine Exploitation and Hazard Prevention Ministry of Education, Xi'an University of Science and Technology, Xi'an, Shaanxi 710054, China; Western Engineering Research Center of Mine Gas Intelligent Drainage for Coal industry, Xi'an, Shaanxi 710054, China
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