This Rothemühle heat exchanger differs from heat exchangers with rotating heating elements that the gases to be cooled down or warmed up are channelled through the stationary heating elements. The gases are distributed by means of rotating covers that are positioned in identical structures on the top and bottom of the heat exchanger. Both rotating covers are connected by a central shaft and are suspended in the center of the stator.
Rothemühle heat exchangers work in accordance with the counter-flow principle. In the flue gas cleaning sector, Rothemühle heat exchangers are used as gas preheaters in low-dust denitrification (deNOx) plants and for flue gas desulfurization (deSOx) plants.