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Beer fermentation with the ISO-MIX Mixing Technology
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Improve yeast viability and optimize your fermentation processes
Applying the ISO-MIX Mixing Technology in beer fermenters and in tanks for maturation of beer will reduce production time and improve the beer quality. When the ISO-MIX Mixing Technology is used in brewhouses in the fermentation process, fermentation capacity is maximised and yeast viability improved.
The ISO-MIX fermentation technology ensures brews with stable and superior beer quality.
Operation
The ISO-MIX Rotary Jet Head mixer is installed in the fermentation tank and submerged in the wort. The mixer is fed from a recirculation loop routed from the bottom of the tank via a boost pump.
The recirculation requirement in a 2000 hl tank is approx. 180 hl/hour at about 3.5 bar, measured at the mixer inlet.
Benefit
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Improving the yeast viability and thereby optimizing the brewing process. During fermentation the settlement of yeast leads to hot spots in the cone area where the yeast is starving and exposed to maximum concentration of alcohol and CO2. This will have a negative effect on the viability of the yeast.
Operating the ISO-MIX brewing system for a few minutes every hour eliminates the problem as it controls the yeast sedimentation by redistributing the yeast in the entire vessel.
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When recirculating beer over the pump and the turbine for 5 minutes every hour during the diacetyl rest, the yeast cell concentration will remain high throughout the fermentation tanks, and the resting time can be reduced due to a faster elimination of diacetyl.
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When cooling down the beer, the cooling time may be reduced by recirculation of the beer during this period, when the temperature falls to below 6°C. This circulation increases the heat transfer at the cooling surfaces, which otherwise suffers when the thermal convection dies out (in the temperature range between 6 and 0°C.)
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The ISO-MIX brewing equipment can be used for dosing chemical stabilizers more uniformly at a more efficient phase in the process. This will minimize the amount of beer stabilizer being used and allow for the use of a cheaper and/or more effective agent.
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The total reduction of the process time depends upon the specific process. Significant reductions have been experienced in many applications. Reduced production costs and improved chemical stability will be achieved as well.
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6.
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The ISO-MIX system can be used as a very efficient tank cleaning - cleaning in place (CIP) unit in the empty tank.
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