Research on the dust reduction by spraying law of fully mechanized face using a large-scale dust and droplet coupling model

Ye, Yuxi; Yu, Haiming; Xie, Sen; Dong, Hui; Cheng, Weimin; Wang, Xingjie

doi:10.1016/j.psep.2024.01.047

Cited by 11 publications

(1 citation statement)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nie et al researched the optimal air volume for dust curtain suppression technologies in controlling dust pollution dispersion, finding that the best suppression efficiency of 85% was achieved with an air volume of 90 m 3 /min 27 . However, these studies also noted challenges, such as the need for high pressures in high-pressure spraying to achieve effective dust control, substantial air pressures required for dust curtain devices, generally poor performance on fine particulates, and inflexible installation of the devices 28 , 29 . Currently, several studies have demonstrated that a combination of air curtain dust control and high-pressure spray dust control technology is a highly efficient means of effectively managing coal dust 30 – 36 .…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical evaluation of the dust suppression efficiency of an innovative vortex pneumatic fog screen dust control device

Ren,

Jing,

et al. 2024

Sci Rep

View full text Add to dashboard Cite

To effectively control the dust generated by coal mining operations, a new type of cyclonic pneumatic mist curtain dust control device was developed. Using CFD software, numerical simulations were conducted on the internal airflow velocity field, the exit velocity of the cyclonic pneumatic mist curtain, and the mist droplet particle field of the curtain. Experiments were carried out to measure the spray coverage, droplet size, and the dust control performance of the model device. The results indicate that when the water pump supply pressure is 8 MPa, the fan supply wind speed is 12 m/s, and the nozzle installation angle is 75 degrees, the cyclonic pneumatic mist curtain dust control device model operates under optimal conditions. The effective coverage of the cyclonic mist curtain is 380 × 3300 mm, fully suppressing dust generation on one side of the curtain. An optimal dust removal distance of about 90 cm was determined. After installing the cyclonic pneumatic mist curtain dust control device, the average dust reduction efficiency for respirable dust reached 91.07%, and the overall dust reduction efficiency achieved 93.34%.

show abstract