Desulfurizer, mainly be used for removal of H2S in pipeline gas, water gas, semi-water gas, coke oven gas, methane(biogas). Desulfurizer, activated ferric ... desulfurizer, mainly be used for removal of H2S in pipeline gas, water gas, semi-water gas, coke oven gas, methane(biogas).Advantages:1 ... after boiling it 2 hours or soaking it 15 days in water. It's activity and intensity are still same as before ...