고온 연료가스 정제를 위한 ZnO-CuO 혼성탈황제의 반응 특성연구

정용길; 박노국; 전진혁; 이종대; 류시옥; 이태진; Yong-kgil Jung; No-Kuk Park; JiH Hyuk Jun; Jong-Dae Lee; Si-Ok Ryu; Tae-Jin Lee

Clean Technology, Vol.9, No.4, 189-196, December, 2003

Export Citation

고온 연료가스 정제를 위한 ZnO-CuO 혼성탈황제의 반응 특성연구

A Study on Reactivity of ZnO-CuO Sorbent for Hot Gas Desulfurization

정용길, 박노국 , 전진혁, 이종대, 류시옥 , 이태진 ^†

영남대학교 응용화학공학부 국가지정연구실, 우)712-749 경북 경산시 대동 214-1번지

Yong-kgil Jung, No-Kuk Park , JiH Hyuk Jun, Jong-Dae Lee, Si-Ok Ryu , and Tae-Jin Lee^†

National Research Laboratory, School of Chemical Engineering & Technology, Yeunguam University, 214-1, Dae-dong, Gyeongsan-Si, Gyengsanbuk-dO, 712-745, Korea

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초록

고온 연로가스 정제를 위하여 ZnO-CuO 혼합탈황제를 제조하였으며, 탈황제들의 반응 특성을 조사하였다. ZnO와 CuO의 혼합비율에 다른 황화반응 속도는 CuO의 함량이 증가할수록 빨라졌다. ZnO와 CuO 비율을 달리한 각 탈황제의 재생특성을 조사하기 위하여 TPO실험을 수행한 결과, 400 °C 이상에서 CuSO4가 생성되고 700 °C이상에서 CuSO4가 열분해 됨을 알았다 600 °C에서 재생된 탈황제는 CuSO4에 의한 SO2 slippage 현상이 관찰되었으나 700 °C에서 재생할 경우에는 SO2 slippage가 관찰되지 않았다. 이로써 ZnO와 CuO의 혼합으로 CuO는 ZnO의 휘발을 억제하고 ZnO는 CuO에 대한 SO2 slippage를 최소화 시켰다.

ZnO-CuO mixed sorbent for desulfurization in hot gas cleaning process were prepared and investigation on their characteristics was performed in this study. The rate of sulfidation increased as the amount of copper oxide in the composite sorbent was raised. TPO experiments were carried out to investigate the characteristics of the regeneration of the sorbents with several different ratios of ZnO to CuO. Copper sulfate was formed at temperatures above 400 °C, while it was decomposed by pyrolysis above 700 °C. SO2 slipage due to CuSO4 was observed in the sorbent regenerated at temperatures above 600 °C. However, it was not observed when regenerated above 700 °C. It was confirmed in the ZnO-CuO mixed sorbent system that CuO suppressed the vaporization of ZnO on the on hand and ZnO minimized the SO2 slippage due to CuO on the other hand.

Keywords:desulfurization;sorbent;ultra clean up

[References]

Ruth LA, Proceeding of Workshop on Clean Energy Utilization Technology Seoul Korea, 19 (2001)
Federal Energy Technology Center, FETC, office of Fossil Energy, US Department of Enerty (1999)
Slimane RB, Akpolat OM, Lau FS, Experimental studies In Support of Ultra-Clean Gas Clean up Process Development, Eighteenth Annual International Pittsburgh Coal Conference Proceeding (2001)
Westmoreland PR, Harrison DP, Environ. Sci. Technol., 10, 659 (1976)
Kobayashi A, IHI Co. Report (1991)
Lew SJ, Sarofim AF, Chem. Eng. Sci., 47, 1421 (1992)
Gupta RP, Gangwal SK, Jain SC, Energy Fuels, 6, 21 (1992)
Gupta RP, Gangwal SK, Topical Report to DOE/METC (1992)
Kwon WT, Park NK, Lee TJ, Yi CK, Theor. Appl. Chem. Eng., 2, 2199 (1996)
Scheer P, Goett. Nachr., 2, 98 (1918)

[Related Articles]

[1] Ruth LA, Proceeding of Workshop on Clean Energy Utilization Technology Seoul Korea, 19 (2001)

[2] Federal Energy Technology Center, FETC, office of Fossil Energy, US Department of Enerty (1999)

[3] Slimane RB, Akpolat OM, Lau FS, Experimental studies In Support of Ultra-Clean Gas Clean up Process Development, Eighteenth Annual International Pittsburgh Coal Conference Proceeding (2001)

[4] Westmoreland PR, Harrison DP, Environ. Sci. Technol., 10, 659 (1976)

[5] Kobayashi A, IHI Co. Report (1991)

[6] Lew SJ, Sarofim AF, Chem. Eng. Sci., 47, 1421 (1992)

[7] Gupta RP, Gangwal SK, Jain SC, Energy Fuels, 6, 21 (1992)

[8] Gupta RP, Gangwal SK, Topical Report to DOE/METC (1992)

[9] Kwon WT, Park NK, Lee TJ, Yi CK, Theor. Appl. Chem. Eng., 2, 2199 (1996)

[10] Scheer P, Goett. Nachr., 2, 98 (1918)