Example of a real project

Initial situation:
Preheater rotary kiln with a NO_x emissions ranging between 800 and 1500 mg/Nm³

Targeted NO_x emission level: < 500 mg/Nm³
Based on the historical emissions and the reduction target, decision to implement a Selective Non Catalytic Reduction (SNCR) for the NO_x emissions

Tasks carried out:

• Identification of the ideal window of temperature for the SNCR
  
  
  
  
• Identification of the physical area corresponding to the range of temperatures required for the SNCR
  
  
• Selection of the detailed injection technology through pilot tests


• Determination of the optimal location of the injectors as a function of the diameter of the droplets and the spatial distribution of the temperature


• Selection of the optimal reducing agent (urea vs. ammonia)


• Basic engineering
  
  

Results:
NO_x abatement up to 80%