Journal of Energy Engineering (에너지공학)

The Korean Society for Energy (한국에너지학회)
권호 표지

Regeneration of Zinc Titanate Used for High Temperature Desulfurization of Fuel Gases

연료가스의 고온 탈황에 사용된 Zinc Titanate의 재생

  • 이태진 (영남대학교 화학공학 및 공업화학부) ;
  • 권원태 (영남대학교 화학공학 및 공업화학부)
  • Published : 1998.03.01
Download PDF
⟨ Previous Next ⟩

Abstract

Zinc titanate sorbents were prepared and regeneration of used sorbents for high temperature desulfurization of fuel gases was studied. Zn/Ti molar ratio of prepared sorbents was 1.5 and quartz fixed-bed reactors with 1 cm and 3 cm diameters were used. Regeneration of zinc titanate sorbents at high temperature is exothermic reaction; that brings about deterioration of sorbents. Therefore, we experimented regeneration reaction of zinc titanate sorbents for the purpose of obtaining the most suitable regeneration conditions by changing experimental parameters such as reaction temperature, oxygen concentration, flow rate and steam content. $H_2S$ and $SO_2$ breakthrough curves were obtained during desulfurization-regeneration. Also, properties of the sorbents before and after regeneration were analyzed using SEM, XRD, Hg-porosimetry and BET method. From such results, we obtained the most suitable regeneration conditions including regeneration temperature of 650$^{\circ}$C, $O_2$ content of 5% and steam content of 10% in the gas stream.

Zinc titanate 탈황제를 제조하여 연료가스의 고온탈황에 사용된 탈황제의 재생에 대해서 연구하였다. 준비된 탈황제의 Zn/Ti 몰비는 1.5이고 반응기는 내경 1 cm와 3 cm의 석영관 고정층반응기들을 사용하였다. 고온에서 zinc titanate 탈황제의 재생은 발열반응을 수반하여 탈황제의 물성을 저하시킨다. 따라서 zinc titanate 탈황제의 가장 적합한 재생조건을 선정하기 위해서 반응온도, 산소함량, 유량변화, steam 함량 등을 변화시키면서 재생반응을 실험하였다. 탈황-재생의 실험동안 H2S와 SO2의 파과곡선을 구하였다. 또한 반응실험 전후의 탈황제의 물성을 SEM, XRD, Hg-porosimetry 및 BET로 분석하였다. 이런 결과들로부터 zinc titanate 탈황제에 가장 적합한 재생조건은 $650^{\circ}C$, O2 함？ 5%, steam 함량 10% 이상이라는 결론을 얻었다.

Keywords

References

  1. 석탄가스화 복합발전기술 위크샵 v.55 국내 IGCC 개발내용 및 향후 계획 김종영;김종진;조상기
  2. 화학공학 v.34 no.4 고온석탄가스에 아연계 탈황제에 의한 H₂S의 제거 이태진;박노국;김장희;김기석;박영우;이창근
  3. 환경연구 v.16 no.1 Zinc Titanate에서 H₂S 흡수특성 조사 이태진;박노국;권원태;장원철;박영성
  4. Topical Report to DOE/METC Enhanced Durability of Desulfurization Sorbents for Fluidzied-Ved Applications Gupta, R. P.;Gangwal, S. K.
  5. Topical Report to DOE/METC Enhanced Durability of High-Temperature Desulfurization Sorbents for Moving-Bed Applications Option 2 Program: Development and Testing Of Zinc Titanate Sorbents Ayala, R. E.
  6. Proceedings of the Advanced Coal-Fired Power Systems '95 Review meeting Bench0Scale Testing of Flujdized-Bed Sorbents-ZT4 Gangwal, S. K.;Gupat, R. P.;Cicero, D. C.
  7. Topical Report to DOE/METC High-Temperature, High-Pressure Testing of Zinc Titanate in a VenchScale Fluidized-Bed Reactor for 100 Cycles Gupta, R. P.;Gangwal, S. K.
  8. Final Report to DOE/METC Integration and Testing of Hot Desulfurization and Entrained-Flow Dasification for Power Generation Systems Volume Ⅱ- Evaluation of Zinc Loss from Zinc Titanate Sorbents During Hot Gas Desulfurization Gupta, R. P.;Gangwal, S. K.;Johnson, E. W.
  9. Proceedings of the Coal-Fired Power Systems93- Advances in IGCC and PFBC Review Meeting Enhanced Durability of Desulfurization Sorbents for Fluidized-Bed Applications Gangwal, S. K.;Gupta, R. P.
  10. 화학공업과기술 v.11 no.5 석탄가스화 복합발전용 고온건식 탈황기술 박영성;이영우;손재익
  11. Proceedings of the Advanced Coal-Fired Power Systems '96 Review meeting Philips Sorbent Development for Tempa Electric Company and Sierra Pacific Power Company Khare, G. P.;Delzer, G. A.;Greenwood, G. J.;Kubicek, D. H.
  12. Proceedings of the Advanced Coal-Fires Power Systems '96 Review meeting Bench-Scale Testing of Attrition Resistant Moving Bed Sprbents Swisher, J. H.;Gupta, R. P.
  13. Proceedings of the Advenced Coal-Fired Power Systems '96 Review meeting Long Life ZnO-TiO₂and Novel Sorbents Copeland, R. J.;Cesario, M.;Feinberg, D.;MacQueen, B.;Sibold, J.;Windecker, B.;Yang, J.
  14. Proceedings of the Advanced Coal-Fired Power Systems '96 Review meeting Assessment of Hot Gas Contaminant Control Rutkowski, M. D.;Klett, M. G.;Zahachuk, R.
  15. Proceedidngs of the Coal-Fried Power Systems 93 - Avanced in IGCC and PFBC Review Meeting Testing of Zinc totanate Desulfurization Sorbents for Moving-Bed Applications Ayala, R. E.;Gal, E.;Gupta, R. P.
  16. Proceedings of the Coal-Fired Power Systems '96 Review Meething Hot Gas Desulfurization Using Transport Reactors Moorehead, E. L.;Henningsen, G. B.