Hertog Jan Brewery Case Study on Filtration

This case study presents the filtration practices at Hertog Jan, a brewery located in Arcen, Netherlands, which is part of the AB InBev group. The document details the importance of high-quality raw materials and processes in brewing specialty beers, as emphasized by Gerard van den Broek, the First Line Manager. The study specifically outlines the use of CPM sterile filters, types PSF 60 and 82, for sterile filtration of CO2 in the filling line and for supplying sterile air for various brewing processes. It describes the technical aspects of these filters, including their stainless steel housing, PTFE membranes, and low pressure loss capabilities. The document also addresses the operational reliability of these filters compared to plastic cartridges, noting that the condition of the filter membranes is visibly apparent, which is not possible with depth filters. The case study concludes with a discussion of the cost-effectiveness of using CPM filters, indicating potential savings of up to 50 percent in operational costs compared to conventional filter cartridges.