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Spray Nozzles for Denitrification (DeNOx)

Companies with processes that use combustion systems may deal with the creation of toxic gasses such as nitrogen oxides. These nitrogen oxides end up being released into the environment, which can lead to excessive air pollution that can cause environmental harm. To reduce the amount of nitrogen released, companies use spray nozzles for denitrification processes in their selective non-catalytic reduction (SNCR) systems.

Importance of Spray Nozzles in Denitrification

Denitrification within an SNCR system involves the use of a nitrogen oxide-reducing agent, such as ammonia or urea, which becomes injected into the hot flue gasses. These reducing agents mix with the nitrogen oxides (NOx) and convert them to harmless water vapor and nitrogen.

Employing these systems can reduce harmful emissions without the use of a catalyst. Spray nozzles placed in key areas of the process need to provide a wide distribution range and high discharge velocity to thoroughly interact with the moving flue gasses.

Special Laval twin fluid nozzles from Lechler offer a range of spray patterns based on the SNCR system along with desired droplet sizes, turn-down ratios, and pressure ranges to suit your applications.

Applications for Spray nozzles for Denitrification

Selecting the right spray nozzles will be dependent on the temperature of the flue gasses, the injection rate of the NOx reduction agent, distribution, and how long the agent remains in the air before full evaporation. Each application process is different, which may require one or several spray nozzles solutions equipped in key areas of the SNCR system.

Chemical applications may have corrosive processes while needing to lower NOx limits due to regulatory standards. Spray nozzles are designed with corrosion-resistant materials that lessen the likelihood of clogging.

Scrubbing applications rely on scrubbing agents to target nitrogen oxides as well as other chemicals and gasses that may be present, including sulfur dioxide (SO2) and halogen. Scrubbers are categorized based on the characteristics of the agent, such as wet scrubbers and dry scrubbers.

Wastewater treatment applications can create high nitrogen levels during the bacterial biological treatment process. Denitrification is used in a two-step process by using spray nozzles to reduce nitrite and nitrate and turn them into nitrogen gas.

Aeration & mixing processes involve the use of spray nozzles to ensure that oxygen also becomes introduced in the application when dealing with biological environments and treatments. Lechler spray nozzles can be designed with a primary and secondary air flow for a fine atomization spray.

Why Choose Lechler for Your Spray Nozzles?

Lechler offers a range of denitrification spray nozzles for companies in a range of industries such as wastewater treatment, cement production, chemical processing, and power plant generation -- among many others. We offer Laval nozzles, Laval flat fan nozzles, 1AW nozzles, and MasterNOx nozzles.

Our nozzles are made from corrosion-resistant and durable materials that prevent clogging and allow for a range of spray distributions and flow rates based on where the nozzle is placed in applications. In addition, we also offer our SmartNOx and VarioClean systems when you are looking for standalone SNCR systems and denitrification systems that can grow with your operations.