Thermal oxidation with regenerative heat recovery (RTO) for textile coating

Solution / Highlights

In order limit the operation to only one exhaust air purification system, all emission sources were consolidated and fed to one thermal oxidation system. In this manner, the partially high heating values of several contaminants could be used for oxidation of the weakly loaded volume flows. The RTO system, model ROXITHERM RTK, was deployed in order to achieve optimal clean gas and consumption values. Due to the very high exhaust air volume flows, a 5-chamber system was used. The functions just as the conventional 3-chamber system, with the difference that 2 chambers can always be simultaneously flowed on or flowed off.

Based on the local on-site conditions, only one assembly on a drive-under, steel base structure could be considered. A warm water heat exchanger for hall heating was integrated for usage of the residual heat in the clean gas.

As the softener condensate in the raw gas could not be avoided, the system is outfitted with condensate drains and a "burn-out" function, which makes it possible to vaporise caked accumulations in the inlet area of the heat reservoir.