With Flumroc, the heat in the exhaust gas should be used to operate an ORC process. As a result of the drop in temperature, the dew point of the sulfuric acid is not reached. This can additionally be used to reduce sulfuric acid emissions. The Lucerne University of Applied Sciences and Arts will clarify and document the relationships in order to maximize the possible benefits. The exhaust gas temperature can be reduced further than originally assumed. A concept for wiring together two heat exchangers was examined. A significant reduction of the sulfur content can only be achieved with an additional catalytic stage.