H2SO4 mixer options 3

[granny75]

I am looking for a device that will mix 96-92%H2SO4 with water and create a final solution of 5-10% H2SO4. I have found static mixers(on skids) and glass type mixers. Are there any other options? The plant currently has a mixing "pot". The method or type of mixing has to be safe, easy to maintain, and proven. Currently the solution outlet flow rate is about 6gpm. Any help would be appreciated.

 

[SENGUTTUVAN]

Try in for static mixer made of Impervious graphite material impregnated with suitable resin ( which can withstand the heat of dilution ). These mixers are common to dilute the H2so4 from 96% to the required concentration in the phosphoric acid production plant. These Imperviouss graphite blocks can be machined to any required venturi shape / pipe to add acid and the water . The outer side of the graphite tube is enclosed with a CS shell and water is circulated to take away the heat of dilution. Check with Le carbone , UK and Alpha Laval Vicarb.

 

[corrosionman]

Granquist Whichever system you finally choose, design it so it can be easily changed if you ever decide that you did not make the correct choice or if something stops the mixing process.
Dropping conc Sulphuric into water is just like dropping water into a tank of oil - it goes straight to the bottom and sits there - - no "self mixing" or "self dilution" will occur and the lining of the mixing tank will be destroyed very soon. GRP, Butyle rubber,. Hypalon rubber
etc. Of the plastics, only PVDF seems to be resistant.
Cheers
CM