Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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A Study on the Desulfurization Efficiency of Limestone Sludge with Various Admixtures

  • Seo, Sung Kwan (Energy & Environmental Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Chu, Yong Sik (Energy & Environmental Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Shim, Kwang Bo (Energy & Environmental Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Lee, Jong Kyu (Energy & Environmental Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Song, Hun (Division of Materials Science and Engineering, Hanyang University)
  • Received : 2015.07.01
  • Accepted : 2015.10.15
  • Published : 2015.11.30
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Abstract

The flue gas desulfurization (FGD) process is one of the most effective methods to reduce the amount of $SO_2$ gas (up to 90%) generated by the use of fossil fuel. Limestone is usually used as a desulfurizing agent in the wet-type FGD process; however, the limestone reserves of domestic mines have become exhausted. In this study, limestone sludge produced from the steel works process is used as a desulfurizing agent. Seven different types of additives are also used to improve the efficiency of the desulfurization process. As a result, alkaline additive is identified as the least effective additive, while certain types of organic acids show higher efficiency. It is also observed that the amount of FGD gypsum, which is a by-product of the FGD process, increases with the used of some of those additives.

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References

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