The exhaust gas is fed into the partial condenser E01 and flows downwards in this condenser with the condensing exhaust gas charges, which leads to a defined depletion of the exhaust gas contents. Waste gas and liquid flow together into the temperature-controlled sump V01, where the cleaned waste gas is separated from the liquid and, depending on the process requirements, either discharged or fed via a vacuum pump or a blower (e.g. VP01) into a second process stage consisting of condenser E02 and collection vessel V02 at a lower temperature. For many batch processes, it is sufficient to treat the loaded liquid after the process; for larger loading quantities, continuous depletion or pumping off of loaded solvent is required.
For the recovery of partial fractions, e.g. aromas in beverage production or partial components to be recovered from waste gas, a temperature graded condensation can be applied.