Nitrogen oxide reduction 

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.

  • Industrial spray-unit

    Media-connectorsRead more
  • Industrial spray-unit

    Spray-units two-substanceRead more
  • Pressure Nozzles - 100-200

    Circular hollow-coneRead more
  • Three- & Four-Substance 946, 0/56

    Circular full-coneRead more
  • Two-Substance - 0/2-0/9

    External mixing - circular full-coneRead more
  • Two-Substance - 0/41 S3/0/51 S3

    Flat-jet - oval flat sprayRead more
  • Two-Substance - 0/64-0/60

    Internal mixing - circular full-conesRead more
  • Two-Substance - 940

    External mixing - circular full-coneRead more
  • Two-Substance - 970

    External mixing - circular full-coneRead more

Zweistoffdüsen Flachstrahl

  • Modell 0/41 S43

Externe Mischung Vollkegel

  • Modell 970
  • Modell 940
  • Modell 0/2-0/9


  • Modell 946, 0/56

Industrial spray-unit

  • Media-connector

Druckdüsen Hohlkegel

  • Modell 100​​​​​​​


  • Brilliant Droplets

    Nozzles and injection lances in use with flue gas denitrogenation installations

    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.

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  • In fine vapors

    Atomisation technology in nitrogen oxide reduction using urea

    During 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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