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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >CFD Modeling of Ventilation and Dust Flow Behavior in Polishing and the Design of an Innovative Wet Dust Removal System
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CFD Modeling of Ventilation and Dust Flow Behavior in Polishing and the Design of an Innovative Wet Dust Removal System

机译：抛光通风和粉尘行为的CFD建模及创新湿尘拆除系统的设计

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摘要

Fine aluminum dust pollution in the polishing process was detected during a field survey. To obtain a fundamental understanding of the airflow patterns and the fine dust dispersion characteristics during a polishing process, computational fluid dynamics simulations were first performed to analyze the data collected in field measurements. The inappropriate ventilation arrangement and lack of effective dust control measures were identified as the main reasons for the high dust exposure levels (in excess of 1000 μg/m ). Simulation results showed that inhalable dust particles (PM10) could be significantly diluted at the operator’s breathing level by adding a supply air inlet above the operating area. Moreover, dry dust collection systems create a risk of aluminum dust explosion accidents. An innovative design of wet dust removal system which could mitigate the occurrence of dust explosions was proposed and then implemented on site. An independent field dust assessment showed that a reduction of fine dust particles up to 95% in the worker’s breathing area and the fine dust in the vents was reduced to 80%. Therefore, the proposed strategies are implemented immediately to address the combustible dust in the polishing working environment and can provide guidance for operators.
机译：在田间调查期间检测到抛光过程中的细铝粉污染。为了在抛光过程中获得气流模式和细小粉尘色散特性的基本理解，首先进行计算流体动力学模拟，以分析现场测量中收集的数据。不恰当的通风安排和缺乏有效的防尘控制措施被确定为高粉尘暴露水平的主要原因（超过1000μg/ m）。模拟结果表明，通过在操作区域上方添加供应空气入口，可以在操作者的呼吸水平下显着稀释可吸入的粉尘颗粒（PM10）。此外，干尘收集系统造成铝粉尘爆炸事故的风险。提出了一种创新的湿尘清除系统设计，可以减轻粉尘爆炸的发生，然后在现场实施。一个独立的现场粉尘评估表明，工人呼吸区域的细粉颗粒高达95％的细粉尘颗粒和通风口的细粉尘降低至80％。因此，拟议的策略立即实施，以解决抛光工作环境中的可燃粉尘，可以为运营商提供指导。

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