Methods for long-term and continuous filtration of draft beer without using a centrifuge

We embarked on establishing methods for the long-term and continuous filtration of draft beer, using our existing candle filter system without a centrifuge, toward the goals of productivity improvement, cost reduction, order-driven production with flexible output, and others. This study shows some of the methods that proved to be quite effective, such as optimizing precoating and kieselguhr mixtures and dosage and establishing an evaluation procedure for young beer. Relative to precoat optimization, we discovered that kieselguhr could be uniformly coated on the elements by modifying the method and timing of the kieselguhr slurry addition. In the kieselguhr mixture optimization, modifying the kieselguhr mixtures minimized the differential pressure increase. Relative to dosage optimization, optimizing the flow volume reduced both the amount of cake buildup and the differential pressure increase. In the evaluation test of young beer, relativity was discovered between the number of yeast cells in young beer and the differential pressure increase. Accordingly, an effective filtration pattern was created by precounting the number of yeast cells in the young beer prior to filtration and adjusting the filtration parameters accordingly. We are reporting the methods mentioned above as they relate to long beer filtration cycles while maintaining the filtering function to trap microorganisms and the quality of foam retention, as well as the results of the forcing test and others.