Study on Catalytic Wet Oxidation of H_2S into Sulfur on Fe/Cu Catalyst

摘要

A wet catalytic oxidation at room temperature was investigated with solution containing ferric, ferrous and cupric ions for H_2S removal. The experiments were carried out in a two step process, and the results obtained show that the removal efficiency of H_2S can always reach 100% in a 300 mm scrubbing column with four sieve plates, and the regeneration of ferric ions in 200 mm bubble column can match the consumed ferric species in absorption. Removal of H_2S, production of elemental sulfur and regeneration of ferric, cupric ions can all be accomplished at the same time. No raw material is consumed except O_2 in flue gas or air, the process has no secondary pollution and no problem of catalyst degradation and congestion.