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As a leading nozzle manufacturer, high quality standardised solutions are business-as-usual for us.
However, thanks to the breath of our manufacturing capacities and comprehensive expertise, we can also produce custom and individual designs for specific applications.
No matter how small the series
or short the timeframe.
SNCR procedure (selective non-catalytic reduction)
In order to meet the increasingly stringent requirements for air pollution control, the SNCR process (selective non-catalytic reduction), among other things, was developed for the denitrification of exhaust gases. A reducing agent (ammonia, urea or urea solution) is purposefully introduced into the hot exhaust gas stream via injection lances or nozzles, thus causing a selective NO reduction. In practice, the temperature window is between 850 and 1100°C. Low investment costs, direct spraying into the boiler and quick retrofitting speak in favour of this technology.
The SNCR and SCR procedures were developed for flue gas denitrogenation in order to meet the strict air purification requirements. Injection lances for the defined insertion of the reducing agent are an important component of both processes. These differ in their structural and procedural design depending on the application.
Read moreDuring flue gas denitrogenation, the addition of a reducing agent is used to transform nitrogen oxides into a substance that can be emitted without causing any damage or can be used again. The reducing agent ammonia is increasingly being replaced by innocuous urea. However, urea has a tendency to crystallise during atomisation. When observing the nozzle systems used in urea atomisation, it can be seen that trouble-free operation is not always guaranteed.
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