The robust and compact design of the absorber column and absorber reservoir is complemented by a reliable automation system. The exhaust air, consisting of ethanol and acetic acid is transported through the absorber column and thereby cleaned. By using a dual-stage exhaust air scrubber, the exhaust air is passed through two washing columns in succession, thereby increasing the recovery of volatiles to more than 90%.
The exhaust air scrubber functions on the basis of physical absorption. The resources contained in the exhaust air are washed out of the gas phase and gathered within the washing liquid. The special design of the filling material within the absorber column guarantees a very high surface and therefore leads to an optimal mass transfer during the cleaning. The washing liquid can be used for mash preparation or dosed back into the vinegar fermenter. In case of using the fed-batch process the liquid can be dosed into the fermenter during the charge phase.
Standard sizes: 300 – 4000 m3 / h air volume. Exhaust air scrubbers and condensers can be constructed based on customer requirements and tailored to local specifications.
Yes, the wash water is collected in a reservoir and especially when using the fed-batch process, the wash water can be dosed into the fermenter during the cycle as charging water.
Cetotec exhaust air scrubbers offer the ideal solution for cleaning the air and simultaneously recovering valuable resources, especially for industrial vinegar fermenters in the production of spirit vinegar, as the wash water can be returned to the fermenter.
Condensers are particularly recommended for the production of wine vinegars and specialty vinegars.