... ). Desulfurizer, activated ferric oxide desulfurizer, mainly be used for removal of H2S in pipeline gas, water gas, semi-water gas, coke oven ... ), Desulfurization rate: when H2S content at entrance is 2000mg/Nm3, the value of outlet gas is H2S max 5mg/Nm32), Sulfur Removal Volume ... after boiling it 2 hours or soaking it 15 days in water. It's activity and intensity are still same as ...