What is the component responsible for the pungent odor produced when 92% concentrated sulfuric acid is unloaded?
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The facility has a tank containing 92% concentrated sulfuric acid; every time the acid is unloaded, a very strong and irritating odor fills the area, making it impossible to enter. Isn’t it said that concentrated sulfuric acid doesn’t emit any odor? What are the components of this smell?
How does it revert to sulfur dioxide? How are these gases removed?
I plan to use a water film absorber in combination with spraying; is it still necessary to add alkali?
If the sulfuric acid concentration is too high, sulfurous acid, H2SO4+SO3, is formed; when exposed to air, SO3 escapes, which is why there is an irritating odor.
In the sulfuric acid production process, sulfur dioxide dissolved in concentrated sulfuric acid is generally present in larger amounts when acid is produced from pyrite; whereas sulfuric acid is produced in dryers, where dry air serves to remove moisture, resulting in less sulfur dioxide being dissolved.
I agree with the view expressed by the wise person on floor 5. One factor is sulfur trioxide present in concentrated sulfuric acid; another is that when the concentration of liquid sulfuric acid is high, volatilization of sulfuric acid from its surface occurs as well. This phenomenon is not visible to the naked eye, but by using an absorber to remove the air above the sulfuric acid, it is possible to detect the presence of sulfuric acid clearly. The more this happens, the more obvious it becomes