Research Topic

Investigation of various pleated filter media geometries on the operating behavior of surface filters in gas cleaning

In various industrial applications (e.g., cement plants, spray drying plants, and coal-fired power plants), regenerable surface filters are used to reduce emissions or extract products from the gas phase. One type of surface filter is pleated filter elements. These create more filtration area with a more compact design by folding the filter media. This offers, for example, the possibility of small, compact extraction systems with a large filter media area, which are mobile and can be used as needed. Furthermore, the use of pleated filter media in existing systems can reduce the differential pressure and thus the energy consumption of the system while maintaining the same volume flow. However, pleating the medium can lead to certain difficulties in filtration operation with regard to regeneration and the service life of the filter elements.

In order to better understand the influence of different filter media geometries on the operating behavior of filters, various pleated filter elements in different sizes (laboratory and technical scale) are being investigated as part of the research. The investigations focus primarily on the regenerability of the filter elements and the influence of various process and operating parameters on the development of operating behavior over time. These investigations enable a better understanding of the influence of geometry on important parameters (e.g., differential pressure development) and provide support for media manufacturers and plant engineers in the design of filter elements and systems.