Elimination of Sulfuric Acid Mist
Elimination of Sulfuric Acid Mist
(OP)
I am in the process of designing a wet scrubber for the removal of sulfuric acid mist from exhaust air.
This mist is reported as having particle size of 5 - 6 micrometers and specific gravity slightly above 1, while the packing manufacturer has data only for 7 - 12 micron particles at that SPGR, and for SPGR 2 -4 at the particle size of interest.
Is there any equation to correlate removal efficiencies? Or rules of thumb to the same effect?
This mist is reported as having particle size of 5 - 6 micrometers and specific gravity slightly above 1, while the packing manufacturer has data only for 7 - 12 micron particles at that SPGR, and for SPGR 2 -4 at the particle size of interest.
Is there any equation to correlate removal efficiencies? Or rules of thumb to the same effect?





RE: Elimination of Sulfuric Acid Mist
I think you'll need fabric elements.
Hope you can stand the element pressure drop.
RE: Elimination of Sulfuric Acid Mist
RE: Elimination of Sulfuric Acid Mist
H2SO4 mist / aerosols should be much finer than that, so It's pretty sure that if the 5-6 microns you report is correct, it is not H2SO4 mist.
As said H2SO4 aerosols call for , a good mesh pad, and more effectives options would be ceramic candles / fabric (but you need to reheat if downstream a wet scrubber) or a wet electrostatic precipitator (WESP). A WESP is expensive, and ceramic filters mean pressure drop.
RE: Elimination of Sulfuric Acid Mist
I'm a bit rusty on the mist terminology: "d50 cut" means removal of 50% of the particles?
RE: Elimination of Sulfuric Acid Mist
The particule distribution is a key element. If your mist is really 5-6 microns in size, a wet scrubber should get it by itself. A mesh pad too, and you will not need more sophisticated technolgies.