Sprühbild MasterNOx®-Düse

MasterNOx nozzle lances

Special twin-fluid nozzles for SNCR applications.

The Lechler MasterNOx nozzles are usually used in the non-catalytic denitrification of flue gases (SNCR process). They are usually designed as flat fan nozzles and achieve a high spraying range to make the liquid penetrate as far as possible into the boiler.

Technical data (pdf, 2 MB)
Lechler India Pvt. Ltd.
Fon +91-22-40634444
Fax +91-22-40634498


Spray angle
Spray angle15°, 30°, 60°
Turn-down ratio
Turn-down ratioof over 50:1
Typical pressure range
Typical pressure rangeLiquid 1-10 bar, g; Atomizing air 1-6 bar, g
Adjustment of the droplet spectrum
Adjustment of the droplet spectrumby changing the air/water ratio

The nozzle specially developed for the retrofitting of existing power plants is characterized by a small outer diameter, so that it can fit between the pipes of the boiler wall. It can also have a protective flow of barrier air around it without the need for the pipes to be bent aside.


  • „„Injection of ammonia water for DeNOx processes (SNCR)

Application areas

SNCR process

Denitrification DeNOx SNCR