Extended Range of Filter Cartridges

The Filtration Division of the power management company Eaton has developed a new BECO filter cartridge range that can be combined to provide effective pre-filtration and final filtration for stable and bright beer.

For beer filtration, a two-stage pre-filtration system effectively protects downstream membranes. In the first stage, a pre-filter from the BECO Protect PG range with a retention rating (ß ratio ≥ 5000) of five or ten µm is used as a particle filter. In the second stage, a fine filter from the BECO Protect FS FineStream range with a retention rating of 0.3 or 0.5 µm helps ensure optimal preparation of the beer for the next step, membrane filtration, by reducing the colloids, proteins and tannins that can result in premature membrane blockage. For sterile filtration before bottling, the BECO Membran PS Beer membrane filter cartridge, which can be tested for integrity and has an absolute retention rating of 0.45 or 0.65 µm, can be used as a downstream “police filter” to reduce or remove yeast and bacteria.

The pleating of the fine polypropylene fleece in the BECO Protect FS FineStream pre-filter cartridge increases the filter area in the filter cartridge while keeping the pressure difference at a low level. The looped pleating around the inner core ensures the individual loops hold each other in place and maximize mechanical stability. This special design also helps prevent deformation of the pleating during backwashing at up to two bar and 80 °C.

The BECO Membran PS Beer membrane filter cartridge is optimally tailored to the requirements of final filtration. The filter material consists of pleated polyethersulfone and provides high microbiological retention. The membrane’s asymmetrical pore size distribution minimizes blockage, the filter area is designed for high flow rates. The fully welded design with additional polypropylene support fleece increases mechanical stability, withstands a differential pressure of five bar in and two bar against the direction of flow at 20 °C, as well as more than 100 steam cycles.