Acid gas treatment issues in the storage and handling areas for fuming sulfuric acid
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In the tank area, there are storage tanks for storing and transporting fuming sulfuric acid (105%). The SO3 that escapes from the vent openings reacts with water vapor in the air to form acidic mist, which can cause corrosion, pollution, and safety issues. How can this be addressed? Please ask the forum members for help!
If the gas volume is large, a small absorption tower can be installed in the tank area to use process water to absorb the acid mist； If the capacity is relatively small, a water seal tank can be added; by entering “Sulfur-containing wastewater tank water seal structure diagram” in the forum, you can find it
We can customize acid mist absorbers for you, filled with adsorption resin and connected to the ventilation outlet of the acid tank. Replace the resin regularly to maintain environmental hygiene and safety.
I saw a patent that uses a small tank, in which a baffle is welded from the top down to divide the tank into two interconnected halves. There is a gap below the baffle to allow communication between the two halves, and the lower end of the baffle is made serrated; one side of this baffle is connected to the vent pipe of the storage tank while the other side is used to release air. Concentrated sulfuric acid is placed inside the tank. During exhalation, half of the concentrated sulfuric acid in the storage tank’s vent pipe is pushed to the other half; acid mist emerges from the bottom of the serrated baffle and is washed by the concentrated sulfuric acid. During inhalation, conversely, the water vapor in the air is dried by concentrated sulfuric acid. I think it’s good; I just wonder how effective it actually is