Insights into agglomeration and separation of fly-ash particles in a sound wave field

Lu, Mingjian; He, Mingchun; Liu, Shuxin; Luo, Zhongyang

doi:10.1039/c8ra09581g

Cited by 22 publications

(7 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consequently, when considering economic factors, there appears to be an optimal duration for practical agglomeration applications. Moreover, excessively prolonged agglomeration can lead to overly large particle sizes, potentially resulting in particle breakage if not accompanied by enhanced sound intensity, which can adversely impact the agglomeration effect. , …”

Section: Influence Of Related Parameters On Acoustic Agglomerationmentioning

confidence: 99%

Review of Acoustic Agglomeration Technology Research

Zhang,

Deng,

Luo

et al. 2024

ACS Omega

View full text Add to dashboard Cite

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.

show abstract

Section: Influence Of Related Parameters On Acoustic Agglomerationmentioning

confidence: 99%

Review of Acoustic Agglomeration Technology Research

Zhang,

Deng,

Luo

et al. 2024

ACS Omega

View full text Add to dashboard Cite

show abstract

“…In this case, different mechanisms of external exposure are more or less efficient (we consider the particle sedimentation time as the efficiency criterion) under different conditions. Coagulation is accelerated in turbulent flows [48], under the action of acoustic waves [49,50], under the combined action of ultrasound and vortex motion. Such a combined effect is successfully studied in the works of Khmelev et al [51][52][53].…”

Section: Aerosol Particle Coagulationmentioning

confidence: 99%

Symmetry in Aerosol Mechanics: Review

2022

View full text Add to dashboard Cite

The present review is concerned with the motion of aerosol particles, including that under the exposure to external fields, with special focus being put on the problems related to the similarity theory and invariants that manifest themselves as symmetry in physics. Research on the mechanics of aerosols is extremely important for managing environmental practices. Ultrasonic and electrostatic effects are used in technological processes for cleaning industrial aerosol emissions. In addition, aerosol systems are commonly used to prevent emergency situations (fire extinguishing, fog deposition). Understanding these processes requires knowledge of aerosol mechanics. At the same time, fundamental laws of particulate matter behavior have not been established until now, especially in the presence of external fields. In this paper, we consider the main similarity criteria that are applied for aerosol description. The motion of aerosol particles in the gravitational, electric, and ultrasonic fields is described. The results from studies into acoustic and electrostatic aerosol coagulations are presented herein.

show abstract

“…These can, therefore, enter the lungs and endanger human health [6][7][8][9]. Traditional dust removers, such as cyclone dust collectors and electrostatic precipitators (ESPs), although with high efficiency in decreasing the mass concentration of particles, exhibit low efficiency in removing PM 1 (85% or less) [10][11][12]. Wet electrostatic dust removal devices cover a large area, and they increase equipment operating cost.…”

Section: Introductionmentioning

confidence: 99%

The Influences of Acoustic and Pulsed Corona Discharge Coupling Field on Agglomeration of Monodisperse Fine Particles

He¹,

Luo²,

Wang³

2020

Applied Sciences

Self Cite

View full text Add to dashboard Cite

In view of the low efficiency of traditional electrostatic precipitators in removing fine particles, acoustic and pulsed corona discharge coupling fields were proposed to increase particle size. In this paper, monodisperse particles with three different sizes (0.5 μm, 2 μm, and 4 μm) were generated to investigate the agglomeration effect under different parameters in external fields. A larger reduction ratio of particle number concentration resulted in a higher agglomeration efficiency. Results indicated that, in the range from 800 to 2400 Hz, the acoustic agglomeration effect on 4-μm particles was better than that on 0.5-μm and 2-μm particles. In the pulsed corona discharge field, agglomeration efficiencies of the three particle sizes were lower than those in the acoustic field. However, application of the coupling field highly improved agglomeration efficiency compared with the single field. When a pulse input voltage of 50 kV with acoustic sound pressure level (SPL) of 143 dB and frequency of 1600 Hz was selected, the corresponding number reduction ratio of 0.5-μm, 2-μm, and 4-μm particles increased to 0.464, 0.526, and 0.918 from 0.254, 0.438, and 0.814 in the acoustic wave field and 0.226, 0.385, and 0.794 in the pulsed corona discharge field.

show abstract

Insights into agglomeration and separation of fly-ash particles in a sound wave field

Cited by 22 publications

References 49 publications

Review of Acoustic Agglomeration Technology Research

Review of Acoustic Agglomeration Technology Research

Symmetry in Aerosol Mechanics: Review

The Influences of Acoustic and Pulsed Corona Discharge Coupling Field on Agglomeration of Monodisperse Fine Particles

Contact Info

Product

Resources

About