Liquid Phase Catalytic Oxidation of Low-Concentration H<,2>S in Cerium Doped Absorption Solution
For the goal of sulfur recovery, most methods are aimed at the tail gas with high-concentration H<,2>S, but few effective methods are used for low- concentration H<,2>S. In this work, Low-concentration H<,2>S could be purified well by liquid phase catalytic oxidation (LCO), and the sulfur resource could also be recovered. The absorption solution was prepared by FeCl<,3> and sulfosalicylic acid. Under the experimental conditions, the conversion of H<,2>S to S could be maintained above 94％ at 60℃. In order to enhance the economical efficiency of LCO method, the absorption solution was modified by doping Ce, and a series of experiments were designed to investigate its performance. The results showed that the conversion of H<,2>S had no obvious improvement, but above 98％ conversion could be gained at 60℃, and the H<,2>S conversion rate was enhanced. The optimum addition quality of Ce (NO<,3>)<,3> was 0.08g to 50ml Fe<3+> solution.
hydrogen sulfide liquid phase catalytic oxidation cerium rare earths
Yi Honghong(易红宏) Tang Xiaolong(唐晓龙) Ning Ping(宁平) Yu Lili(于丽丽)
Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650093, China
国际会议
第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)
包头
英文
253-256
2007-08-07（万方平台首次上网日期，不代表论文的发表时间）