Yanbin Yu , Lianxin Fang , Bo Zhou , Wenting Cui , Shi Yin , Kezhi Song
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引用次数: 0
Abstract
Dust pollution from industrial production seriously threatens workers’ occupational health and enterprise safety. The cylindrical vortex dust removal system based on artificial tornadoes was proposed to mitigate dust pollution in workspaces. To elucidate the flow field characteristics and dust control mechanisms of this ventilation system, the airflow-dust two-phase coupling model was established based on the Euler-Lagrange method, and the influence of different jet angle θ and blowing-suction flow ratio k on the airflow-dust coupling diffusion was simulated. The findings indicated that jet interactions significantly influence dust control efficacy. Increasing θ and k can transform jet interactions from entrainment to impact. Appropriate adjustment of θ and k can significantly reduce the area polluted by high-concentration dust clusters. When 20°≤θ ≤ 30° and 0.90 ≤ k ≤ 1.15, the cylindrical vortices generated within the space demonstrated pronounced stability and effective dust control capabilities. Currently, the proportion Vd′ of the high-concentration dust pollution range is less than 10 %, and the dust removal efficiency ε exceeds 85 %. Compared to traditional single-vent ventilation, which depended solely on the exhaust air volume for dust capture and control, the dust removal efficiency in the cylindrical vortex dust removal system increased by 167.69 % when the total air volume remained constant. This research furnished the theoretical foundation and design guidelines for implementing cylindrical vortex dust removal systems in industries.
期刊介绍：
The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide.
The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them.
Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)
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