Journal of the Korean Industrial and Engineering Chemistry, Vol.14, No.5, 556-563, August, 2003
석탄가스용 탈황제 제조 및 특성에 관한 연구
A Study on Shaping & Characteristics of Coal Gas Sorbent
E-mail:
초록
본 연구의 목적은 유동층이나 고속유동층 탈황반응기에 적용할 수 있는 고온고압 아연계 탈황제를 개발하고자 하는 것이다. 이러한 목적을 위하여 가압노즐 분무건조기를 이용하여 아연계 탈황제를 성형 제조하여 ZAC이라 명명하였다. 분무건조 성형된 탈황제 중 ZAC-9를 대상으로 SEM에 의한 형상분석, XRD 분석, BET 표면적 측정, 입자크기 및 분포측정, 내마모도 측정 등 물리적 특성을 분석하였으며, TGA와 고온고압 탈황반응기에서 황흡수력을 측정하였다. 그 결과 ZAC-9는 구형의 형상과 평균 116 μm의 크기를 갖는 등 유동층 공정에 적합한 물리적 특성을 갖추었으며, TGA 황흡수력은 16 ~ 21 wt%, 고온고압 탈황반응기에서의 황흡수력도 초기값의 50% 이상 유지하는 결과를 나타내었다.
The goal of this study was the development of HTHP Zn-based sorbents for adaptation in a fluidized bed desulfurizer or Transport Reactor. For this purpose, zinc-based sorbents using a spray dryer with a pressurized nozzle atomizer was developed and it was named ZAC. For the ZAC series sorbents the physical properties such mean particle size & distribution analysis and attrition ratio analysis for ZAC-9 sorbent were characterized using SEM, BET surface area, and XRD pattern. After the characterizations, TGA & HTHP (High Temperature High Pressure) reactor experiments were carried out for chemical sulfur absorbing capacity. The results showed that sorbents were spherical in shape and the mean particle size was about 116 μm. The attrition resistance was acceptable to be adapted in a fluidized bed desulfurizer. Sulfur absorbing capacity of a fresh sample, measured by TGA was approximately 16 ~ 21 wt%, and HTHP sulfur absorbing capacity was high, sustaining more than 50% of initial value.
- Ji PS, Park TJ, Kim JJ, Chem. Ind. Technol., 11(2), 76 (1993)
- Ryu CK, Wee YH, Lee JB, Lee YK, Chem. Ind. Technol., 16(1), 17 (1998)
- Ryu CK, Wee YH, Lee JB, Chem. Ind. Technol., 17(1), 41 (1999)
- Moorehead EL, Henningsen GB, Katta S, Oconell JJ, Hot gas Desulfurization Using Transport Reactors, Proceedings of the Advanced Coal-Fired Power Systems '96 Review Meeting, DOE/METC-96/1037, s3-2 (1996)
- Susan L, Adel FS, Maria FS, Ind. Eng. Chem. Res., 31(8) (1992)
- Gupta RP, Turk BS, Vierheilig AA, Desulfurization Sorbents for Transport-Bed Applications, Proceedings of the Advanced Coal-Fired Power Systems '97 Conference, DOE/FETC-97/1046, 2A.6 (1997)
- ASTM D 5757-95, Standard Method for Determination of Attrition of Powdered Catalysts by Air Jets.
- Abbasian J, Slimane RB, Wangerow JR, Zarnegar MK, Advanced Low-Temperature Sorbents for Fluid-Bed Application, Proceedings of the Advanced Coal-Based Power and Environmental Systems '97 Conference, Pittsburgh, PA, ps2a.5 in CD-ROM, July 22 ~ 24 (1997)
- ASTM D 4164-88, Standard Test Method for Mechanically Tapped Packing Density of Formed Catalyst and Catalyst Carriers.
- U.S. Patent, 5,294,298 (1995)
- Henningsen GB, Katta S, Mathur GK, Sorbent Testing and Commercialization of Transport Reactors for Hot Gas Desulfurization, Proceedings of the Advanced Coal-Fired Power Systems '97 Conference, DOE/FETC-97/1046, 2A.7 (1997)
- U.S. Patent, 5,739,072 (1998)
- Gupta RP, Turk BS, Vierheilig AA, Desulfurization Sorbents for Transport-Bed Applications, Proceedings of the Advanced Coal-Based Power and Environmental Systems '98 Conference, Morgantown, WV, 2A-2 in CD-ROM, 21 ~ 23 July (1998)
- Ranjani VS, METC-10 Desulfurization Sorbents for Low- and High-Temperature Application, Proceedings of the Advanced Coal-Based Power and Environmental Systems '98 Conference, Morgantown, WV, 2A-5 in CD-ROM, 21 ~ 23 July (1998)
- U.S. Patent, 5,714,431 (1998)