Multicyclic Study on Improved Zn/Ti-Based Desulfurization Sorbents in Mid-Temperature Conditions

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• 作者：Si Ok Ryu ; No Kuk Park ; Chih Hung Chang ; Jae Chang Kim ; and Tae Jin Lee
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2004
• 出版时间：March 17, 2004
• 年：2004
• 卷：43
• 期：6
• 页码：1466 - 1471
• 全文大小：345K
• 年卷期：v.43,no.6(March 17, 2004)
• ISSN：1520-5045

文摘

Conventional zinc titanate sorbent was modified with cobalt oxide, nickel oxide, molybdenumoxide, and iron hydroxide in order to achieve the desirable reactivity and mechanical durabilityin mid-temperature ranges, and 100 repetitive cycles of sulfidation/regeneration were carriedout to investigate its reactivity and attrition resistance. In the attrition tests for the improvedsorbents, the results showed that the attrition resistance was 94.08% and that the sulfur capacitywas 23 g of S/100 g of sorbent and 15 g of S/100 g of sorbent in the 3- and 100-cycle tests,respectively. The changes in the properties of the ZTG40 sorbent formulated in this study werealso investigated with the aid of X-ray diffraction, scanning electron microscopy, Hg porosimetry,and Brunauer-Emmett-Teller surface area measurement during a 100-cycle test. From theanalysis, it was concluded that ZTG40 has the desirable physical and chemical properties fordesulfurization of coal fuel gases at medium temperatures and is suitable for fluidized-bed coalgas desulfurization systems.