Abstract: Catalytic wet oxidation of H2S to sulfur on Fe/Cu catalyst in plate column was investigated，and the effects of superficial velocity，liquid-gas ratio，initial pH value of absorbent and the inlet concentration of H2S on H2S removal efficiency were studied，and the dependency of the oxidation rate of ferrous ion on the air flux and height of ferrous solution column was also investigated. The results showed that the removal efficiency of H2S could almost reach 100% for 1000×10－6 (V/V) H2S under the conditions that the concentrations of Fe2＋，Fe3＋and Cu2＋ were 70 g•L－1，70 g•L－1 and 120 g•L－1 respectively. In general，the possible advantages of this process are low energy demand for operation and reduced consumption of chemicals (no other raw material will be consumed except O2 in flue gas)，and the process has no secondary pollution and no problem of reaction system degradation.

摘要：

阐述了筛板塔Fe/Cu湿式催化氧化脱除H₂S气体制硫磺流程，考察了操作空塔气速、液气比、起始pH值和H₂S入口浓度对H₂S脱除效率的影响及鼓风量、液柱高度对Fe^3＋氧化再生的影响；并进行了综合实验。结果表明，含120g/L的Cu²⁺、70g/L的Fe²⁺及70g/L的Fe³⁺的吸收体系即能对体积分数为1000×10^－6的H₂S废气近100％稳定脱硫，流程简短、能耗低，体系除消耗O₂外，过程不消耗原料，不产生二次污染，体系无降解问题。