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Exhaust gas cleaning processes


Backed by decades of experience and extensive expertise in the field of dust separation, Scheuch was able to turn its skills to contaminant separation early on. We use a whole range of plant concepts to accommodate the specific requirements that arise in each application – covering everything from straightforward to high-end solutions whose designs vary according to the amount of emissions, the raw materials and the fuel composition.

Scheuch makes use of three process-adapted SCR technologies (selective catalytic reduction) as well as the new  DeCONOx procedure as a means of reducing NOx emissions.

Components for dry sorption round off the exhaust gas cleaning product range.

Our Solutions


Simultaneous reduction of nitrogen oxides and organic carbon compounds

The DeCONOx process combines regenerative thermal oxidation (RTO) with a low-dust SCR – two proven technologies in a single system.

DeCONOx makes it possible to reduce nitrogen oxides and organic carbon compounds simultaneously. NOx levels are depleted by means of a catalytic reduction process that uses ammonia, while carbon compounds are reduced by combustion (thermal oxidation in a combustion chamber). The heat that is produced in the afterburning process covers at least some of the thermal energy requirements of the denitrification that is needed to return the flue gas to the catalytic converter's necessary operating temperature. As a result, the expenditure associated with energy in the DeCONOx process is much lower than in a low-dust SCR.




Dry sorption

Sorption process for additional contaminant removal

We offer in-house-developed adsorption systems that can be used for purifying exhaust gases in applications where energy from contaminated primary or secondary fuels is being recycled.

During the dry sorption process, an absorbent – generally referred to as an additive – in the form of a finely disperse solid is dispersed in the exhaust gas flow. The air pollutants in the exhaust gas are separated at the inner and outer interphase of the additive by means of chemisorption and physisorption. A downstream deduster separates the resulting reaction products from the exhaust gas flow; ideally, this device should take the form of a fabric filter. The process of removing contaminants begins as soon as the additive is incorporated.



NOx reduction

As a means of reducing NOx, Scheuch has optimised its SCR technology and opened it up to the cement industry too. Depending on the plant configuration, you can choose from a high-dust, semi-high-dust or low-dust SCR system for achieving exceptionally low NOx emission values.

Experience has clearly shown that information about a given SCR plant configuration cannot be applied equally to every cement plant because of plant-specific process parameters. In its capacity as an expert provider of NOx reduction solutions, therefore, Scheuch's aim is to work with the customer in order to develop the right process and provide a turnkey installation – all from a single source. In pursuing this aim, we look at all kinds of technologies from the outset in order to ensure that we are creating the very best solution for every application case.


Klaus Emprechtinger
Head of Sales Energy & Metals Tel.: +43 7752 905-5369
Fax.: +43 7752 905-65369

Georg Lechner
Head of Sales
Industrial Minerals Industry
Tel.: +43 7752 905-5138
Fax.: +43 7752 905-65138

Thomas Kreuzhuber
Head of Sales
Panels Industry
Tel.: +43 7752 905-5257
Fax.: +43 7752 905-65257

Alexander Kimberger
Sales Manager Components Tel.: +43 7752 905-5156
Fax.: +43 7752 905-65156

Scheuch GmbH, Weierfing 68, A-4971 Aurolzmünster, Tel.: +43 77 52 905-0, Fax: -65000, E-Mail:

We provide systems for maintaining clean air

Innovative air and environmental technology for industrial applications has been Scheuch‘s stock in trade for 50 years now. Whether the solutions involve extraction, dedusting, conveying, flue gas purification or plant manufacturing, Scheuch is a leading expert with a pole position on the market in numerous sectors, and offers its customers application-specific, high-quality solutions to their air and environmental technology issues.