Main Content

Waste-air purification

The best way to protect the environment is to prevent emissions.

Our innovative waste-air purification systems minimize pollutants while maximizing profitability.

The fastest and surest way to purify combustible organic pollutants is through oxidation. This process involves heating the polluted air until the organic substances essentially oxidize into water and carbon dioxide. Regenerative thermal oxidation (RTO) works best when the resulting combustion energy is returned directly to the production process by a heat recovery system. RTO has proven itself to be a sturdy, safe and universally applicable “omnivore”. Over 1,200 RTO plants have already left our production site in Böblingen fully pre-assembled and tested and been delivered to satisfied customers around the world. Using RTO keeps air safely below the required clean gas limit of 20 mg C/Nm³. RTO also leaves clean gas with low CO and NOx values.

Since it uses very little additional energy, regenerative thermal oxidation (RTO) is a highly efficient exhaust air clearing system. In the Eisenmann solution, the complex valve system is replaced by a special air diffuser system with rotating distributor with a high rate of availability and low maintenance. Eisenmann’s regenerative thermal oxidizers feature uncomplicated, robust technology with low operating costs. The space-saving single reactor system treats exhaust air flows from 10,000 to 120,000 Nm³/h, depending on size. For larger air quantities, multiple reactors are deployed in parallel.

Waste-air purification through adsorption
Unlike thermal oxidation processes, adsorption does not require chemically transforming pollutants or raising the temperature. In contrast to thermal oxidation processes, adsorption does not involve chemical transformation of pollutants or a significant increase in temperature. Adsorption makes use of the propensity of certain compounds (e.g. activated carbon or zeolite) to attract and adhere gas or vapor to their surface. The adsorbed pollutants then need to be removed. To this end, adsorption is always followed by desorption. The resulting desorption flow is up to 20 times more concentrated and accordingly has a much smaller volume. This means it can be treated much more cost-effectively.

Adsorption wheel
Adsorption is used to concentrate exhaust air with low concentrations. The smaller and more concentrated the exhaust air volume to be disposed of, the lower the investment and operating costs. This is why large volumes of exhaust air with low concentrations of pollutants require concentration as a preliminary step, so that the final combustion or solvent recovery can take place efficiently.

When it comes to purifying exhaust air heavily laden with halogen and explosive solvent mixtures, the way to go is a combustion chamber. Eisenmann has various configurations of combustion chambers available. Depending on the application, the Turaktor can be used as an vertical or horizontal combustion chamber for waste-gas purification. The Eisenmann combustion chamber is integrated into the production process by means of a suitable heat recovery system and reliably maintains the required exhaust air thresholds as it purifies fumes.



Aidin  Yousefnejad


Eisenmann Anlagenbau GmbH & Co. KG


work T
+49 7031 78-3217


Brochures, Datasheets, Flyers & Whitepapers
You will find here. Downloads Downloads

© 2019 Eisenmann SE