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Dry Sorbent Injection VOC and Odour Control System

Denitrification System - SCR/SNCR

De-NOx system is based on reactions between reductants and nitrogen oxides. KC Cottrell has supplied highly reliable De-NOx systems fitting the diverse needs and situations of our customers throughout the world. We have successfully installed DeNOx systems in Power Plants, Waste to Energy and heavy industries like steel and non-ferrous.

Selective Catalytic Reduction(SCR)

Selective Catalytic Reduction(SCR) process has a reduction reaction at comparatively low temperature using catalysts.
This process shows the highest efficiency and stability in removing nitrogen oxides.

Process

Denitrification or DeNOx system eliminates NOx (Nitrogen Oxydes) by reaction with injection of ammonia or urea based on the following equations:

4NO + 4NH3 + O2 --> 4N2 + 6H2O
6NO2 + 8NH3 --> 7N2 + 12H2O

Advantages

References

  • Samcheonpo Thermal Power Plant No.1~2 500MWx2, Korea (2009)
  • Gheco Thermal Power Plant No.1 700MW, Thailand (2010)
  • POSCO Gwangyang Sinter Plant No.5, Korea (2010)
  • North Jeju Thermal Power Plant No.2~3 75MWx2, Korea (2010)
  • Atomtech Cheng loong Paper Plant, Taiwan (2011)
  • POSCO SNNC Gwangyang Fe-Ni Refining Plant, Korea (2014)
  • Sejong Thermal Power Plant 500MW, Korea (2013)
  • Shinseojeon Thermal Power Plant 1000MW, Korea (2019)
  • Saemangeum Power Plant

  • Atomtech Cheng loong Paper Plant

  • Shinboryeong Thermal Power Plant

Selective Non-Catalytic Reduction(SNCR)

Selective Non-Catalytic Reduction(SNCR) process happens in a higher temperature (850ºC~1,050ºC) area than SCR.
KC Cottrell guarantees the best performances of SNCR by selecting exact areas to spray reductants based on the simulation of flue gas flow patten.

Catalyst Regeneration Process

Catalysts account for a large part of operating costs. Therefore, we developed a technology to regenerate used catalysts.
Regenerated catalysts can show efficiencies more than 90% of new ones while reducing expenses and protecting environments.

  • 0. Used catalyst

  • 1. Pre-washing

  • 2. Bubbling

  • 3. Ultrasonic

  • 4. Washing

  • 5. Coating

  • 6. Drying

References

  • POSCO Pohang Steel Mill No.1~12, Korea (2011~2012)
  • CFBC Boiler, LG Chem Company, Korea (2008)
  • Yeocheon Plant, KCES Company, Korea (2004)
  • Sunglim Oil & Chemical Company, Korea (2003)
  • Taiwan Taoyuan International Airport
    (Chiang Kai-shek International Airport), Taiwan (2000)
  • CFBC Boiler, LG Chem Company

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