Wet method used for preparing sulfuric acid from exhaust gas containing hydrogen sulfide
A technology for hydrogen sulfide and sulfuric acid production, which is applied in chemical instruments and methods, sulfur compounds, inorganic chemistry, etc., can solve the problems of high pressure level of waste heat recovery equipment, difficult manufacturing operations, and easy to be exposed to dew point corrosion, and achieves by-product steam. The effect of improving heat recovery efficiency and avoiding dew point corrosion of heat exchange tubes
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[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0035] The embodiment of the present invention specifically adopts following technological process:
[0036] figure 1 The waste gas containing hydrogen sulfide in the waste gas is stabilized to a certain pressure by the equipment 1 and then sent to the equipment 2, and is in countercurrent contact with the dilute sulfuric acid sprayed on the top of the tower to wash and remove the ammonia in the waste gas containing hydrogen sulfide. The washing liquid flows into the equipment 3, and the hydrogen sulfide gas in the washing liquid is taken out by introducing air. The stripping gas is mixed into the gas at the outlet of equipment 2, and then sent to equipment 4 for incineration. The ammonium sulfate solution from equipment 3 is sent to evaporation and concentration to produce solid products. The combustion-supporting air sent by the equipment ...
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