Green Process and Material R&D Group, Korea Institute of Industrial Technology, Cheonan-si, Chungnam, South Korea.
J Air Waste Manag Assoc. 2012 Nov;62(11):1257-63. doi: 10.1080/10962247.2012.696530.
A pleated filter bag is often used to treat exhaust gas in many industrial applications, due to its fairly high dust collection efficiency and relatively low pressure drop. This work deals with the optimum pleating geometries of a pleated filter made with a newly developed PTFE/glass composite filter. It was found that pleating geometries, including pleat height and pleat pitch, directly affect the cleaning efficiency The design index, alpha, which stands for the ratio of pleat height to pleat pitch, is 1.48 for optimum operation. When the alpha value was higher than 1.48, the pressure drop across the pleated filter medium increased, resulting in a decreased cleaning interval due to the difficulty of filter cleaning. Therefore, it is necessary that the optimum pleating geometry should be determined by employing the dimensionless parameter, alpha, in the design of cartridge filters.
褶式滤袋由于其较高的捕尘效率和相对较低的压降，常用于许多工业应用中的废气处理。本文针对一种新开发的聚四氟乙烯/玻璃复合滤料褶式滤料的最优褶式几何形状进行了研究。结果表明，褶式几何形状，包括褶高和褶距，直接影响清灰效率。设计指标α代表褶高与褶距的比值，最优运行时为 1.48。当α值高于 1.48 时，褶式过滤介质的压降增加，由于过滤清洗困难，导致清灰间隔时间缩短。因此，在设计筒式过滤器时，通过采用无量纲参数α来确定最优褶式几何形状是必要的。
