Dynamics of liquid-phase catalytic oxidation of hydrogen sulfide removal in rural biogas
来源期刊：中南大学学报(英文版)2014年第7期
论文作者：贾丽娟 宁平 向宇 QU Guang-fei(瞿广飞) XIONG Xiang-feng(熊向锋)
文章页码：2843 - 2847
Key words：liquid phase catalytic oxidation; hydrogen sulfide; rural biogas; purification efficiency; rare-earth
Abstract: Hydrogen sulfide in rural biogas was removed with liquid-phase catalytic oxidation. By using rare earth as catalyst, and sulfosalicylic acid as stabilizer, H2S purification efficiency could increase as high as 96%, and sulfur capacity of the composite solution was about 3 g/L. The results show that purification efficiency was affected by catalyst addition, pH, experimental temperature, and sulfur capacity. The parameters effects on catalytic oxidation were studied, and the optimized conditions were that Fe3+ concentration 0.08 mg/L, reaction temperature 70°C, pH 9.0, with a absorption solution volume of 50 mL, a gas flow rate 200 mL/min, and H2S mass concentration of 1.58-2.02 mg/m3.
JIA Li-juan(贾丽娟), NING Ping(宁平), WANG Xiang-yu(王向宇), QU Guang-fei(瞿广飞), XIONG Xiang-feng(熊向锋)
(Faculty of Environmental Science & Engineering, Kunming University of Science & Technology,
Kunming 650500, China)
Abstract:Hydrogen sulfide in rural biogas was removed with liquid-phase catalytic oxidation. By using rare earth as catalyst, and sulfosalicylic acid as stabilizer, H2S purification efficiency could increase as high as 96%, and sulfur capacity of the composite solution was about 3 g/L. The results show that purification efficiency was affected by catalyst addition, pH, experimental temperature, and sulfur capacity. The parameters effects on catalytic oxidation were studied, and the optimized conditions were that Fe3+ concentration 0.08 mg/L, reaction temperature 70°C, pH 9.0, with a absorption solution volume of 50 mL, a gas flow rate 200 mL/min, and H2S mass concentration of 1.58-2.02 mg/m3.
Key words:liquid phase catalytic oxidation; hydrogen sulfide; rural biogas; purification efficiency; rare-earth
