Arbon, Thurgau region, Switzerland
CO2 gas from cider fermentation process
“With the compact CO2 recovery system we have simply created space for our unique selling proposition – the wooden barrels. And the quality of the CO2 is much better as well.”
- Markus Möhl, Technologist at the Möhl cider factory
“We have everything cold in the cellar and everything hot is installed on the top floor,” Möhl said. “In winter we use the waste heat for indoor heating, and in summer it is carried away over the roof. We take the cold air to cool the cellar. So the concept is also energy efficient.” The Pentair Haffmans plant draws in 75 kg/h. That is the largest possible option with an air-cooled compressor, and was chosen to optimize the price/performance ratio.
With its compact CO2 recovery system the Möhl cider factory now fully recovers the CO2 necessary for its operations. Fermenting mixed concentrate makes continuous production throughout the year possible. This is where the cycle has similarities with the brewing industry. Comparable quantities are also involved: the “base wort” of the apple juice corresponds to that of a “full beer” (beer with 11-14 percent original wort) and its rapid fermentation is fully comparable with the production of wheat beer. The proven Pentair Haffmans solutions are transferable across different beverages as Möhl expressly confirmed, “The whole system works outstandingly well.”
|MÖHL’S CO2 RECOVERY SYSTEM AT A GLANCE|
|Medium||CO2 Gas from Cider Fermentation Process|
|Suction capacity||75 kg/h|
|Suction conditions||CO2 gas, 1,0 bar at 20 °C|
|CO2 gas inlet purity to plant||≥ 99,7 Vol. % CO2|
|CO2 outlet purity||> 99,97 Vol. % CO2 w|
|Storage conditions||17,5 bar(g) at -24 °C|
|Cooling plant||Environmentally friendly medium|
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