Fe-Ce双金属氧化物常温脱除低浓度H2S  

Fe-Ce bimetal oxides for removal of low concentration H;S at room temperature

作　　者：郭壮壮 张智宏[1] 杨晓波 GUO Zhuangzhuang;ZHANG Zhihong;YANG Xiaobo(School of Petrochemical Engineering,Changzhou University,Changzhou 213164,China)

机构地区：[1]常州大学石油化工学院,江苏常州213164

出　　处：《化工环保》2022年第1期80-86,共7页Environmental Protection of Chemical Industry

基　　金：江苏省产学研前瞻项目(BY2014037-10)。

摘　　要：采用共沉淀法制备了Fe-Ce双金属氧化物脱硫剂,通过XRD、FTIR、N_(2)吸附-脱附和XPS对脱硫剂进行了表征。在常温下对H_(2)S质量浓度为607μg/L的H_(2)S-N_(2)混合气体进行脱硫研究,探讨了Ce与Fe的摩尔比和无水乙醇洗涤对脱硫剂在常温下脱硫性能的影响,考察了脱硫剂的再生性能。实验结果表明:Ce与Fe摩尔比为0.10、使用无水乙醇洗涤的脱硫剂具有最佳的脱硫性能,在脱硫精度为0.15μg/L的条件下穿透硫容达到203.7 mg/g。脱硫剂在常温下经过空气再生后,第1次再生的穿透硫容达到69.8 mg/g,约为新鲜脱硫剂的34.2%,3次再生脱硫剂的累计穿透硫容达333.0 mg/g。The Fe-Ce bimetal oxide desulfurizers were prepared by coprecipitation method,and characterized by XRD,FTIR,N_(2) adsorption-desorption and XPS.The desulfurization of H_(2)S-N_(2) mixed gas with 607μg/L of H_(2)S mass concentration was studied at room temperature.The effects of molar ratio of Ce to Fe and absolute ethanol washing on the desulfurization capability of the desulfurizer at room temperature were discussed,and the regeneration of the desulfurizer was investigated.The experimental results show that:The desulfurizer with 0.10 of molar ratio of Ce to Fe and washed with absolute ethanol has the best desulfurization capability,and the breakthrough sulfur capacity reaches 203.7 mg/g under the condition of desulfurization accuracy 0.15μg/L;After regenerated by air at room temperature,the breakthrough sulfur capacity of the first-time regenerated desulfurizer reaches 69.8 mg/g which is about 34.2%of that of the fresh desulfurizer,and the cumulative breakthrough sulfur capacity of the three-time regenerated desulfurizers reaches 333.0 mg/g.

关 键 词：Fe-Ce双金属氧化物 常温脱硫 H_(2)S 再生 

分 类 号：X701.3[环境科学与工程—环境工程]