Korean Journal of Chemical Engineering

The Korean Institute of Chemical Engineers (한국화학공학회)
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Technology development for the reduction of NOx in flue gas from a burner-type vaporizer and its application

  • Son, Jeongeun (Graduate School of Chemistry and Chemical Engineering, Inha University) ;
  • Yang, Huicheon (Graduate School of Chemistry and Chemical Engineering, Inha University) ;
  • Kim, Geonjoong (Graduate School of Chemistry and Chemical Engineering, Inha University) ;
  • Hwang, Sungwon (Graduate School of Chemistry and Chemical Engineering, Inha University) ;
  • You, Hyunseok (New Energy Technology Center, KOGAS Research Institute)
  • Received : 2016.11.25
  • Accepted : 2017.02.06
  • Published : 2017.06.01
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Abstract

We developed a modified process of a submerged combustion vaporizer (SMV) to remove nitric oxides (NOx) efficiently from flue gas of the SMV at liquefied natural gas (LNG) terminals. For this, excess oxygen is injected into exhaust gas that contains NOx from SMV burner. Then, the mixed gas spreads into a hydrogen peroxide solution or water bath. We initially performed experiments of the modified system to estimate the effect of various process variables (temperature, excess $O_2$ concentration, pH of water, residence time of flue gas in water tank, and $H_2O_2$ concentration) on NOx conversion, and developed a mathematical model of the system based on the experiment results. Lastly, we confirmed higher performance of the modified system and validated the feasibility for its field application.

Keywords

Acknowledgement

Supported by : Korea Gas Corporation, Ministry of Trade

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