... be used for removal of H2S in pipeline gas, water gas, semi-water gas, coke oven gas, methane(biogas). Desulfurizer, activated ferric oxide ... be used for removal of H2S in pipeline gas, water gas, semi-water gas, coke oven gas, methane(biogas).Advantages:1), Desulfurization rate: ... 18 years7. Export experience 8. Sample available CHINA very hot star --Ferric oxide Desulfurizer - coal based