How does Poret®, a unique open-celled pre-filter medium, perform with a pulse filtration system?
Different from normal synthetic media, this pre filter wrap is pulsable, washable and reusable. But mainly it increases the dust holding capacity of your pulse filters by up to 50% and can thus contribute to an extended operating time of a pulse filtration system. The pre filter efficiency is optimized for effective coalescing effect and high dust load.
The Poret® Wrap is suitable for the application fields of gas turbines and HVAC System
The diagram compares the dust holding capacity of a cartridge filter without pre filter wrap, with a synthetic pre-filter medium as well as with the Poret® Wrap. The dust loading was performed without a pulse effect up to a final pressure difference of 300 Pa.
While the use of a synthetic pre-filter media hardly contributes to a higher dust holding capacity of a pulse filter, the dust holding capacity increased by up to 50 % with the Poret® Wrap at an identical final pressure difference.
The following diagram shows the difference in the initial pressure difference of a pulse filter with and without pre filter wrap. At a typical volume flow of 2500 m³/h for control mode, the initial pressure difference of the pulse filter with and without the Poret® Wrap is almost congruent.
As a pre-filter media, the Poret® Wrap contributes only minimally to a higher initial pressure difference of the pulse filters. Rather, the wrap ensures a more stable pressure difference during operation in order to realise an extended service life of the cartridge filters and thus a low maintenance requirement.
Synthetic pre-filter media are not suitable for pulse filtration system because the fibre structure is quickly blocked by coarse particles, which in turn can hardly be shaken off even by a pulse effect. In contrast, the Poret® Wrap also excels in the pulse effect as an optimal protective shield fo the pulse filter. As the following video shows, coarse particles are successfully separated by the Poret® Wrap before they reach the pulse filter. During the pulse effect, the separated dust particles are in turn shaken off smoothly.
Even under high loads of dust particles, the open-cell pore structure of Poret® remains permanently open. Dust accumulates inside the pore structure, so there is no blocking of the media by the particles, as it is the case with synthetic fibres within a very short time.
The Poret® Wrap can be easily washed, so it will be as clean as before usage. Thus, it is reusable for multiple times. Even after cleaning, the open-cell pore structure of the prefilter wrap remains intact and always exhibits stable filter efficiency and consistent initial pressure drop.
