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Filtration
Spaten-Franziskaner Bräu KGaA in Munich had been examining commercial and technical aspects of modernising filtration for some time. As a result of the merger with Löwenbräu AG in 1997, the project had to be tackled right away. This paper describes the investment in a "new filter cellar" from an economic and ecological standpoint. In addition, technological features and operating experiences gathered on the plant are covered.
An initial economic feasibility study and analysis of critical points of filtration at Spaten-Franziskaner-Bräu KGaA was carried out back in 1993 by JMF, Josef Meier Filtrationsberatung. After the merger with Löwenbräu AG in 1997, the concept then formulated had to be revisited.5 million hl p.a.00 DM/hl.
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Filtration
In on-going in vitro investigations, xanthohumol prenylflavonoid exhibits a surprisingly great diversity of positive attributes. A test series was run to establish the behaviour of a xanthohumol-rich hop product in beer production (compared to a-acids) and to evaluate the resulting bitter impression.
First results about the biological effect of xanthohumol were summarised in a review article published in 1998 (1).
Brief survey on status of research into xanthohumol
Biological effects
Growth inhibition of certain tumour cells, antioxidative and other anti-carcinogenic properties (activation of the "Quinon-reductase" enzyme or inhibition of human enzymes of the "P450 CYP1A2" class) has been reported.
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Filtration
This paper describes a novel wort boiling process which achieves huge energy savings compared to conventional boiling systems, while simultaneously maintaining overall evaporation. The process presented by the Kaspar Schulz company makes a further distinction between hot holding and boiling-off - with advantages in terms of flexibility and use of primary energy.
In older designs of coppers with low evaporation rates, no problem arose in terms of breakdown of precursors of undesirable aroma components at boiling times of 80 min and more. As far as protein excretion is concerned, the objective has always been to "boil out" sufficient protein in the absence of protein-stabilising additives in beer. Foam problems could hardly be ascribed to wort boiling itself.
Filtration
Final carbonation of filtered beer may occasionally result in different CO2 values arising in the various bright beer tanks. It may also happen that, due to a change in demand, a different CO2 value in the finished beer is subsequently required, e.g. due to a different container or the like.
Moreover, one might possibly have to transfer the contents of a bright beer tank to a transport tank for filling elsewhere.
In some instances, it may be favourable to do final carbonation in the particular bright beer tank to avoid having to filter and carbonate the whole content of the bright beer tank again. This is time-consuming and involves additional costs, furthermore the equipment used is not otherwise available for hours.
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Filtration
Athenian Breweries S.A. installed new filter equipment and largely fully automatic process technology in the brewery plants in Athens, Thessaloniki and Patras. This report provides details on the new installations.
The first "FS 130 System Beer" kieselguhr filter from the "Clear-plus-2000" programme of A. Steinecker Maschinenfabrik GmbH, Freising/Germany, was installed in Patras in 1982. In line with a capacity increase, a second line, again with a capacity of 400 hl/h, was added in 1985.
Convinced about the technology, decision-makers in the Patras brewery asked the planners to undertake a complex job: In the context of automation and extension, the two filter lines had to be moved, one after the other, to a new building while continuing with production..
Filtration
Precoat filtration using centrifugal horizontal filters (ZHF) has been established for decades as an efficient and economic process for beer filtration. In co-operation with Carlsberg, SeitzSchenk Filtersystems GmbH has been developing a new precoat carrier for the ZHF since 1995.
n January 1999, one of three existing filter lines (ZHF-S) at Carlsberg in Copenhagen was fitted with the new Durafil precoat carrier.
The new Durafil precoat carrier was successfully tested and validated by Carlsberg in Copenhagen, both on a pilot as well as a commercial scale. All objectives set by Carlsberg were achieved.
Characteristics of Durafil precoat carrier
Durafil is a perforated stainless steel sheet with a thickness of 0. 1).
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Filtration
Ultrafiltration has become increasingly popular in recent years. In combination with a suitable stabilisation process, concentrates and juices of the highest quality can be produced. Adsorber technology opens up promising perspectives for stabilisation.
Ultrafiltration plants have been operated successfully worldwide for filtration of fruit juices and concentrates for years. Many producers of clear, bright fruit juices regard these plants as a key component of their production lines. In the fruit juice industry, ultrafiltration plants with organic pipe modules are a prominent feature nowadays. The Supercor modules (fig. 1) with ½ inch pipe diameter provide high operational safety and long run times, coupled with uniform filtration characteristics.
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Filtration
Over 70 million hl of beer are "cold filtered" with membrane filters annually worldwide. Breweries in the Far East account for the largest portion. Activities of German breweries are comparatively modest. Can we learn from breweries in the Far East? Using various examples, the following article emphasises not just equipment used for membrane filtration but also covers the benefits and advantages of this technology from a marketing standpoint.
In the German brewing sector, the technology of membrane filtration as a method for extending the shelf-life of beer has been discussed for more than 10 years. It has been technologically praised, at other times dismissed because of excessively high operating costs, and then again very often hailed as a future-oriented technology.
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Filtration
The Raible-Test was unveiled in 1990 as a "simple method for evaluating the filtration characteristics of beer". The authors relate the filtration test to the historical evolution of filtration in general and to developments in the evolution of the evaluation of filterability in particular. Based on the authors’ research results, the potential and forte of the filtration test are assessed and quantified.
It has become common practice when writing scientific articles dealing with aspects of brewing technology to cite only those publications which have been published over the last 20 years. This approach ignores pioneering and fundamental sources from preceding years. Thus, the introduction will briefly deal with development of beer filtration. Lorenz A.e.
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Filtration
Subsequent to a validation period of over six months, the Ecoflux KF1600/50 kieselguhr precoat filter was tested and evaluated by the State Testing and Evaluation Institute for Brewery Equipment of the Technical University of Munich in Weihenstephan. Optimal results were obtained in terms of operating cycle time, kieselguhr consumption, microbiology, haze and oxygen concentration in the filtrate, these results are discussed in this article.
A microbiological monitoring test of the new SeitzSchenk candle precoat filter KF1600/50 Ecoflux was carried out in a German brewery on November 30th, 1999. At the same time, pressure relationships, oxygen values, kiesel-guhr consumption as well as hazes measured from two different angles were checked. Klaus Litzenburger.
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Filtration
SeitzSchenk Filter Systems GmbH of Bad Kreuznach/Waldstetten in Germany have developed a new generation of candle filters to round off their product program. When used for beer filtration, these provide significant benefits in terms of ease of operation and economics. The first results are discussed in this article.
In the brewing industry, candle filters are, together with horizontal filters, one of the most common filtration systems for filtration of beer. These filters are used especially for pre-filtration as precoat filters, customarily using kieselguhr as a filter aid. SeitzSchenk Filter Systems GmbH, Bad Kreuznach/Waldstetten in Germany, have developed a new generation of candle filters to round off their product program.
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