A Study on the Desulfurization and Demineralization by Chemical Treatment of Petroleum Cokes

Petroleum Cokes의 화학적 처리에 의한 황성분 및 회분제거에 관한 연구

  • Han, Woong (Dept. of Fine Chem. Eng. and Chemistry, Chungnam Nat'l Univ.) ;
  • Lee, Si-Hyun (Korea Institute of Energy Reaserch) ;
  • Park, Chu-Sik (Korea Institute of Energy Reaserch) ;
  • Yang, Hyun-Soo (Dept. of Fine Chem. Eng. and Chemistry, Chungnam Nat'l Univ.)
  • 한웅 (충남대학교 정밀공업화학과) ;
  • 이시훈 (한국에너지기술연구소) ;
  • 박주식 (한국에너지기술연구소) ;
  • 양현수 (충남대학교 정밀공업화학과)
  • Received : 1996.07.29
  • Accepted : 1996.09.09
  • Published : 1996.12.10

Abstract

An MCL(Molten Caustic Leaching) treatment is a chemical refinery process which is used for the desulfurization and demineralization by alkali treatment. The MCL treatment removes ash by converting mineral like Si, Fe, V, Ni etc. in petroleum cokes into soluble salts. The MCL has an advantage minimizing carbon loss in comparison to other desulfurization process. Reaction variables for the desulfurization and demineralization in the study were leaching temperature, leaching time, ratio of caustic to cokes, acid concentration and time for washing, and particle size. At the optimum condition, above 99% of desulfurization and about 90% of demineralization was obtained. FT-IR and SEM analysis showed that the structure and surface of the particle was closely related with the degree of sulfur and ash removal, and leaching temperature as well.

Keywords

Acknowledgement

Supported by : 과학기술처

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