Nozzle lances and systems for denitrification

Drawing on our extensive expertise, we assist you in complying with limit values.

In DeNOx applications, twin-fluid nozzles are used as a general rule. Thereby the reagent is atomized with compressed air. The advantage that twin-fluid nozzles have compared to single-fluid nozzles lies in the controllability of the droplet size and generally in the realization of a large flow-rate control range. Due to the varying local conditions and the different response characteristics of the incedted media, it must be possible to control the droplet size and thus the depth of penetration. Our range of solutions includes various DeNOx systems for different specified limits. We will be happy to help you to find an individual solution that fits perfectly today and will grow tomorrow to keep up with rising demand.

Lechler nozzle lances and systems for denitrification


Laval-Düse (für DeNOx-Anwendungen)

Laval nozzle lances

Special twin-fluid nozzles for DeNOx applications. In DeNOx applications with SNCR processes, small Laval nozzles are usually used. These nozzles are characterized by a high discharge velocity, enabling the optimum droplet spectrum to be introduced into the reactor with a great penetration depth.

Laval Nozzle Lances
Laval-Flachstrahldüse (für DeNOx-Anwendungen)

Laval flat fan nozzle lances

Special twin-fluid nozzles for DeNOx applications. The Lechler laval flat fan nozzle is a special nozzle engineered to meet the specific requirements of the SCR and SNCR processes. The air/liquid mixture exits via three spray holes creating a wide and flat spray with an even better surface coverage.

Laval Flat Fan Nozzle Lances

1AW nozzle lances

Twin-fluid nozzles with finest droplet size range.This twin-fluid nozzle enables finest droplet size range and shortest evaporation distances while also allowing very good controllability of the flow rate. Cluster heads designed specifically for these nozzles multiply the flow rates and adapt the spray pattern to the requirements at the point of injection.

1AW Nozzle Lances
MasterNOx nozzles

MasterNOx nozzle lances

Twin-fluid nozzles with a small outer diameter. The nozzles specially developed for the retrofitting of existing power plants is characterized by a small outer diameter.

MasterNOx nozzle lances
Lechler KSD0 nozzle

KSD nozzle lances

Precise atomization of urea suspension. These twin-fluid nozzles operate on the principle of external mixing and therefore have an inclination to less crystallization when urea is injected.

KSD nozzle lances
VarioJet nozzle lances

VarioJet nozzle lances

Twin-fluid nozzles with a large orifice angle for uniform distribution of the liquid. VarioJet nozzles are ideally suited for use in DeNOx technology. They are particularly characterized by their low specific air consumption.

VarioJet nozzle lances
VarioClean – NOx denitrification system

VarioClean – NOx denitrification system

The powerful starter system for denitrification. Lechler VarioClean – NOx is the entry-level system for the SNCR process. Standardized units with fixed components allow for affordable pricing, all while maintaining Lechler’s famous high quality standard.

VarioClean – NOx
VarioClean – heSNCR denitrification system

VarioClean – heSNCR denitrification system

The denitrification solution that grows with the requirements. Lechler has joined forces with STEAG to develop an SNCR concept that reliably ensures compliance with the valid limit values. Depending on the requirements of the legal situation, the modular system VarioClean – heSNCR can be flexibly upgraded.

VarioClean – heSNCR