Spray nozzle VarioJet II-3

atomizingcoolingair

Improved nozzle technology for small liquid flow rates enables considerable savings potentials with regard to atomizing air volume consumption and energy costs for gas cooling and DeNOx. Lechler VarioJet nozzles atomize according to the principle of internal mixing. With this twin-fluid nozzle, the water is fed in axially. After arriving at the distribution plate, the liquid is split up into a thin liquid film. This thin liquid film is split into finest droplets by the atomizing air in the mixing chamber. The resulting two-phase mixture is then atomized a second time when exiting via several bore holes arranged in a circular fashion. In addition to the VarioJet nozzles of the sereis VJ II-6 and VJ II-8, a new series has now been developed. The new series VJ II-3 is designed for small liquid flow rates of 0.045 - 10 l/min and currently comprises five nozzles. In this liquid range, the product portfolio of Lechler twin-fluid nozzles is extended by nozzles that produce finer droplets at small air/liquid ratios compared to Lechler Laval nozzles, while having a large spray angle. Fine droplets and a large spray angle are an ideal condition to accelerate heat and mass transfer processes. This leads to shorter evaporation times in gas cooling or to faster reaction times in the injection of ammonia water for DeNOx-systems. The benefits of the VarioJet II-3 nozzles are their lower operating costs (since less atomizing air is required), their large control ratio of up to 50:1 and their variably adjustable droplet size.