Department of Mechanical Engineering, National Central University, Jhongli City, Taoyuan County 32001, Taiwan, ROC.
J Hazard Mater. 2009 Nov 15;171(1-3):987-94. doi: 10.1016/j.jhazmat.2009.06.103. Epub 2009 Jun 26.
The goal of this study was to evaluate the performance of a moving granular bed filter designed for cold test to filter coal particulates. A series of experiments were carried out at room temperature to demonstrate the collection efficiency of this method of filtration technology (i.e., the moving granular bed filter) at different filtration superficial velocities and mass flow rates of filter granules but with a fixed inlet dust concentration. The dynamic characteristics of the filter system were evaluated by measuring variations in the outlet concentration and size distribution of dust particulates. The collection mechanisms of the filter granules in the moving granular bed filter were also studied. Experimental results showed that the collection efficiency could be enhanced by using a filtration superficial velocity of 30 cm/s and mass flow rate of 450 g/min. The results of this study indicate this type of method could be useful for application in different cross-flow filter systems for gas cleanup. The focus in the current study is essentially the development of a moving granular bed filter that could be applied in a high-temperature environment. The results are expected to serve as the basis for future research.
本研究的目的是评估为冷试验设计的用于过滤煤粉的动粒层过滤器的性能。在室温下进行了一系列实验，以证明这种过滤技术（即动粒层过滤器）在不同过滤表面速度和过滤颗粒质量流速但固定入口粉尘浓度下的过滤效率。通过测量出口浓度和粉尘颗粒的粒度分布的变化来评估过滤系统的动态特性。还研究了动粒层过滤器中过滤颗粒的收集机制。实验结果表明，采用 30cm/s 的过滤表面速度和 450g/min 的质量流速可以提高收集效率。本研究的结果表明，这种方法可能对不同的用于气体净化的横流过滤系统的应用有用。本研究的重点实质上是开发一种可应用于高温环境的动粒层过滤器。研究结果有望为未来的研究提供依据。
