Exhaust air purification
We plan and integrate highly efficient exhaust air purification plants in accordance with TA-Luft and the Bundesimmissionsschutzgesetz or Federal Emission Protection Act (BImSchG) in painting plants. The focus of the planning is on the most favourable design from an energy perspective. The goal is to purify VOC content autothermally, i.e. without additional energy, and to return the released energy back to the process.
We supply the following exhaust air purification plants
The VOC-containing dryer exhaust air is cleaned via thermal oxidation. The energy released during the burning of the solvent is used for heating the dryer.
- Regenerative Thermal Oxidation (RTO) for painting plants in circulating air operation
In modern automatic painting plants, the circulating air currents are concentrated on a solvent content of approx. 2 - 3 g/m³. Under these preconditions, a RTO runs in the autothermal range and is thus the most favourable form of exhaust air purification. If required, the plant can be fitted with a heat exchanger for heating up the water.
- Concentration of solvent-containing exhaust air via Zeolith rotor with downstream thermal oxidation (TO) or regenerative thermal oxidation (RTO) for painting plants in supply air/exhaust air operation
Here, large exhaust air streams with a low VOC content from a manual painting system or an older painting plant are concentrated by means of a Zeolith rotor. This highly concentrated VOC exhaust air stream is cleaned in a thermal oxidation (TO) or regenerative thermal oxidation (RTO) process. The energy released in this process is used for desorption in the concentration process.
