GLOBAL October 2019
KHS extends its beer stabilisation technology to smaller breweries
KHS regenerative beer stabilisation technology is now available for smaller breweries with annual outputs of up to 70,000 hectolitres. KHS Innopro ECOSTAB S, due to its movable base, can be flexibly integrated into the production process. In addition, the stabilising system is characterised by low media consumption and cost of investment.
Even if the ‘best before date’ on beer bottles suggests otherwise, beer does not actually spoil. According to Gerold Tandler, head of Product Management Process Technology at KHS, “It simply changes. After a while, haze substances and small lumps form which are often thought to be yeast but in fact are primarily compounds of protein and polyphenols. They form large agglomerates that precipitate in the bottle and then become visible.” Visually, they have a negative effect on buying behavior. For this same reason, beer that has been transported a long distance or stored for a long period must be stabilised.
KHS Innopro ECOSTAB product line offers regenerative stabilisation using polyvinylpolypyrrolidone (PVPP) for this purpose. This process removes some of the haze-forming polyphenols from the beer. First, a frequency-controlled pump doses PVPP into the product line. The beer is then stabilised in a small module where the PVPP is retained by bound tannin molecules. "Since the PVPP doesn't remain in the beer, the result is low mixing phases, low media consumption and reliable production," said Tandler. The PVPP in the modules is then regenerated and returned to the dosage tank where it is ready for the next stabilisation cycle. Regeneration improves the use of raw materials significantly.
This technology was initially intended for large and medium-sized breweries. Innopro ECOSTAB C, with an output of 150 to 600 hectolitres per hour is ideal for companies with an output of more than 400,000 hectolitres per year. The Innopro ECOSTAB B stabilises between 50 and 240 hectoliters per hour in batches and is thus the suitable solution for companies with annual outputs of more than 50,000 hectoliters.
However, KHS technology is highly relevant even for many smaller brewers with annual outputs of 10,000 to 70,000 hectolitres or breweries that only want to stabilise a small part of their production particularly for export market. With the Innopro ECOSTAB S, KHS now offers its customers its tried-and-tested solution in a smaller size that is easy to use, mobile and carries a small price tag.
Brewers can then decide which share of their beer to stabilise. Milk pipe fittings are used to connect the machine. “Everything that is required for stabilisation under constant conditions is located in the system itself,” added Tandler. No additional equipment is required and the simple and the fully manual operation eliminates the need for any integrated software. The Innopro ECOSTAB S usually means a return on investment in less than 2 years.
KHS GmbH is one of the leading manufacturers of filling and packaging systems for the beverage, food and non-food industries with a sales turnover of €1.161 billion (US$1.3 billion) in 2018.



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