Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Removal Effect of Acid Gases by Reactant Mixer and Distributor of Bag Filter in Dry Scrubbing with NaHCO3

중탄산나트륨 건식공정에서 반응제 혼합 장치 및 백필터 분배장치에 의한 산성가스 제거 영향

  • Lee, Young-Man (Department of Civil & Environmental Engineering, Graduate School, Hanyang University) ;
  • Kwak, Yeon-Ho (KOLON Engineering & Construction Co., LTD.) ;
  • Bae, Woo-Keun (Department of Civil & Environmental Engineering, Graduate School, Hanyang University) ;
  • Kwon, Ki-Wook (Department of Civil & Environmental Engineering, Graduate School, Hanyang University)
  • 이영만 (한양대학교 대학원 건설환경공학과) ;
  • 곽연호 (코오롱건설(주)) ;
  • 배우근 (한양대학교 대학원 건설환경공학과) ;
  • 권기욱 (한양대학교 대학원 건설환경공학과)
  • Published : 2009.10.31
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Abstract

Sodium bicarbonate ($NaHCO_3$) was used as a reactant for the removal of acid gases from a waste incinerator. The removal efficiencies of HCl and $SO_x$ were tested with a reactant mixing apparatus and a distributor installed at the bag filter inlet. It was shown that the stoichiometric ratio of $NaHCO_3$ to the acid gases which allows a removal of over 90% for both HCl and $SO_2$ was about 1.2. When a reactant mixing apparatus was installed on the duct, the removal efficiencies of HCl and $SO_2$ at the end of the duct were increased by approximately 1.5 and 3 times respectively, compared to when the apparatus was not installed. At the end of the bag filter, the removal efficiencies of the both were as high as 98% with a stoichiometric ratio of 1.35. Installing a reactant mixing apparatus on the duct and a distributor at the entrance of the bag filter and using $NaHCO_3$ as a reactant helped overcome the problem of low removal efficiencies of acid gases by dry scrubbing.

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References

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