Influence of multiple factors on the atomization and dust reduction characteristics of internal mixing pneumatic atomization nozzles

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-01-11 DOI:10.1016/j.powtec.2024.120591

Linquan Tong , Yuhao Guo , Xin Jia , Tian Zhang , Zhen Zhang , Jianguo Liu

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引用次数: 0

Abstract

To investigate the spray and dust reduction characteristics of internal mixing pneumatic atomizers, experiments were conducted using a self-developed atomization angle and droplet size testing platform, along with a dust-fog coupling experimental platform. The results showed that under pneumatic pressures of 0.2–0.4 MPa and water flow rates of 10-16 L/h, the volume median diameter (V₅₀) and Sauter mean diameter (SMD) of the internal mixing pneumatic atomization droplets decreased with increasing pneumatic pressure and increased with rising water flow rates, with pneumatic pressure having a greater effect. At dust movement speeds of 1–3 m/s and aerosol velocities of 2-5 m/s and 5-11 m/s, the highest dust reduction efficiency occurred at droplet sizes of 40-50 μm and 30-40 μm, respectively. Setting the aerosol velocity to 8-11 m/s and the dust velocity to 1 m/s, with the droplet size (SMD) evenly distributed between 20‐ and 40 μm, resulted in effective coupling and settling with dust particles ranging from 0 to 50 μm, achieving the highest dust reduction efficiency. This study offers theoretical and experimental support for the use of internal mixing pneumatic atomization in dust control.

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.