1AW-Nozzle lances
Sprühbild 1AW-Einzeldüse
1AW-Bündeldüse
Sprühbild 1AW-Bündeldüse

1AW Nozzle Lances

Special twin-fluid nozzles for SCR applications.

The Lechler 1AW nozzle works according to a newly developed and patented atomization principle. It divides the supplied atomizing air into a primary and secondary air flow. Thanks to the specific inflow geometry, the secondary air exits through an annular gap causing a very fine atomization in the edge region of the spray. This twin-fluid nozzle enables finest droplet spectra and shortest evaporation distances while also allowing very good control 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.

Technical data (pdf, 95 KB)

Properties

Spray angle of the individual nozzle
Spray angle of the individual nozzle 15° as full cone
Turn-down ratio
Turn-down ratio of 10:1
Typical pressure range
Typical pressure range Liquid 14.5-73 psi, g; Atomizing air 14.5-73 psi, g
Particularly fine droplets
Particularly fine droplets
Design
Design as single or bundle nozzle lances
Adjustment of the droplet spectrum
Adjustment of the droplet spectrum by changing the air/fluid ratio

In order to achieve an optimized distribution of the reagent over the duct cross-section, the atomized volume flow can be distributed over cluster heads with up to four individual 1AW nozzles.

The 1AW cluster heads are available in the following versions:

  • Round head with 3 nozzles with a total spray angle of approx. 30°
  • Round head with 3 nozzles with a total spray angle of approx. 40°
  • Flat head with 3 nozzles with a total spray angle of approx. 55°
  • Round head with 4 nozzles with a total spray angle of approx. 40°

Use

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

Application areas

SNCR process

Denitrification DeNox SNCR

SCR process

Denitrification DeNox SNCR

Contact

Lechler, Inc. Phone (800) 777-2926 Fax (630) 377-6657 info(at)lechlerusa.com