Foam producing substances are amongst others dead bacteria, their metabolites as well as unsoluable extracts from raw material. These substances are not only unwanted in the finished product but can also lead to lower fermentation performance as well as disruptions.Therefore the goal is to efficiently remove and in the long run minimize the amount of foam on the fermentation liquid. Due to its sophisticated design and ease in handling, the Cetotec foam system is ideally suited for this specific task. The Cetotec foam system has been successfully installed in numerous vinegar fermenters worldwide.
The foam is carried out by the exhaust air exiting the vinegar fermenter through a hole in the upper part of the outside fermenter wall. The foam flows into a foam collection basin with integrated foam separator and is subsequently pumped into a tank by the foam pump. High-value raw materials can be reintroduced into the fermentation process as foam concentrate.
The portion of removed or reintroduced foam can, relative to the foam pressure, either be manually controlled or via an automatic valve. The specially developed foam pump only needs 1,5kW and is started up only if a specific amount of foam concentrate has settled in the system. As every pump needs to be serviced after a couple of years, the convenient installation next to the fermenter enables user-friendly maintenance procedures.
CETOTEC delivers custom-tailored foam systems for all fermenter sizes in vinegar production.
The foam liquid is usually collected in a foam tank and can be further processed depending on the concentration.
The following things should be checked first: raw material, aeration, concentration in the fermenter, temperature control.