How to handle the excessive H2S in smelting production
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The smelter is equipped with sulfur-based acid production units as well as hydrogen sulfide treatment systems; if there are problems in the smelting section, it is necessary to remove H2S. What methods are available to deal with this H2S? Direct emptying does not meet environmental requirements, and the amount involved is also significant
Since the combustion of H2S produces moisture, and the dryers used in sulfuric acid production typically dry the air that is fed into the sulfur combustion furnace directly, introducing the flue gas resulting from H2S combustion directly into the sulfuric acid production system has a significant impact on the moisture levels in that system. The following process is proposed for reference in an instant: H2S combustion flue gas → cooling → drying using a new small dryer → introducing a fan before the sulfur acid production dryer
It is recommended to use the CLAUS process for sulfur recovery, with the exhaust gases being incinerated.