Catalytic post-combustion chamber

Catalytic post-combustion system

Due to the use of catalysts, the oxidation of pollutants can take place at lower temperatures and is therefore particularly energy-saving. The presence of so-called catalyst poisons such as sulphur, heavy metals or halogens can be a problem for this plant technology. These would severely limit the service lifetime of a catalytic converter. Contact us whether your exhaust air is suitable for the use of a catalytic converter.

Operating principle

The pollutant exhaust air is extracted by a fan and fed into the cleaning system. To reduce fuel consumption, the exhaust gas is heated considerably by the upstream heat exchanger before it is brought to the required reaction temperature with an electric heater or burner. The catalytically active substance lowers the required temperature level compared to thermal combustion, so that the oxidation of the pollutants takes place at a temperature of approximately 350°C - 450°C. The purified exhaust gas then flows through the heat exchanger and transfers a large part of its energy to the pollutant-laden raw gas.

The purified exhaust gas essentially contains O2, N2, CO2 and H2O and can easily be released into the atmosphere.

Due to the preheating via the heat exchanger and the lowered reaction temperature, this process is a very cost-effective method for exhaust air purification.

Industry solutions

Catalytic exhaust air purification is used in applications where defined process conditions exist and possible catalyst poisons can be excluded.

The catalysts and operating conditions are adapted to the respective area of application.

This is taken into account in the following industrial sectors, among others:

Chemical/pharmaceutical industry
Petrochemical industry

Technical data

Exhaust air volume	500 bis 100.000 Nm³/h
Heat exchanger efficiency	bis zu 70 %
Typical contaminants	VOC, NOx
Pollutant concentrations	low to medium loading
Temperature range	300 – 450°C

Benefits

Suitable for applications without possible catalyst poisons
Optimized/lower energy requirement compared to other cleaning processes
Can be integrated into the production plant
Low maintenance effort
Easy accessibility and therefore good options for cleaning and catalyst replacement
Potential for heat recovery with water, thermal oil or air
Electric heating as an alternative to gas is possible
Low space requirement due to the compact design and comparatively low weight
The system can be installed indoors/outdoors, horizontally/vertically, on a foundation/steel structure or on a roof

Further products

RTO

Our regenerative thermal oxidation is characterized by H&OUML; Even small pollutants & shy; concentrations ensure a autothermal operation, i.e. there is no additional heating energy. The modular design enables a wide range of applications.

Compact TNV

Regenerative compact system

Optimal energy utilization is ensured by the integrated tube bundle heat exchanger. The compact design enables flexible integration into the production process and efficient use of energy by feeding it back into the process.

Combustion chamber

Each combustion chamber is individually adapted to your process. It is the solution for complex exhaust air flows and challenging installation situations.

DeNOx

If there is NOx in the exhaust air, the usual oxidation processes are not suitable. Selective catalytic reduction (SCR) or non-catalytic processes (SNCR) are used here.

Energy saver

For optimal utilization of the energy sources used, ENVIROTEC offers appropriate heat recovery units for all systems. By using this technology, an active contribution can be made to conserving resources and reducing CO2 emissions.

System Solutions

Based on experience, we look at systems holistically.
We design and build complete systems for industrial exhaust air and exhaust gas purification.
Turnkey, but also modularly possible.