Study on Atomization and Dust Reduction Mechanisms of AEO-9-Charged Solution

Liying Sun, Shaocheng Ge (), Xi Chen and Shuo Liu
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Liying Sun: College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Shaocheng Ge: College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Xi Chen: College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Shuo Liu: College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Energies, 2023, vol. 16, issue 6, 1-14

Abstract: To effectively improve the dust reduction rate of fine dust and prevent the occurrence of secondary dust, surfactant-charged water mist dust reduction technology is proposed. First, the water mist induction-charged atomization mechanism was perfected by an induction-charged spray experiment and the optimal atomization-charged voltage was determined to be 10 kV. Second, by surface tension and spray experiments on AEO-9-charged solutions, the lower the surface tension and viscosity of the solution, the better the atomization effect; the best atomization solution was 10 kV and 0.02% AEO-9. Finally, according to an electrostatic adsorption experiment, it was identified that there was an electrostatic interaction between coal dust and charged droplets. The contact angle experiment showed that the contact angle of the AEO-9 droplets decreased by 68.44% compared with water after 3 s of contact with coal dust. The wetting effect of bituminous coal was significantly improved by adding AEO-9 to water. A molecular simulation was used to study the molecular interaction mechanism among the H 2 O, AEO-9, and bituminous coal molecules. The simulation results showed that AEO-9 was more active than water, it easily interacted with bituminous coal, and the hydrophilic group covered the surface of the bituminous coal molecules, which increased the electrostatic interaction between the water molecules and bituminous coal surface molecules. After adding AEO-9 to H 2 O, the intermolecular interaction energy of the H 2 O/AEO-9/bituminous coal system was enhanced more than that of the H 2 O/bituminous coal system. This study provides the basis for the application of surfactant-charged water mist dust reduction technology.

Keywords: AEO-9-charged solution; spray droplet size; charged and atomization mechanism; molecular simulation; dust reduction mechanism (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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