Acid tank level indication
Acid tank level indication
(OP)
Any suggestions for a good simple way to measure liquid level in an acid circulating tank.
Conditions:
Acid strength up to 37% HCL
Tank size- 6 ft inside diameter, 8 feet tall.
Some solids entrained occasionally.
Have already tried magnetic strip and various clearish tubing but they all foul up shortly. Glass is frowned upon due to safety reasons.
Cost limit of 1000 USD.
Thanks
Conditions:
Acid strength up to 37% HCL
Tank size- 6 ft inside diameter, 8 feet tall.
Some solids entrained occasionally.
Have already tried magnetic strip and various clearish tubing but they all foul up shortly. Glass is frowned upon due to safety reasons.
Cost limit of 1000 USD.
Thanks





RE: Acid tank level indication
RE: Acid tank level indication
As a chem eng/metallurgist the first part of any answer I give starts with "It Depends"
RE: Acid tank level indication
RE: Acid tank level indication
Nylon is not compatible with acids, though other thermoplastics are.
RE: Acid tank level indication
RE: Acid tank level indication
RE: Acid tank level indication
But, the parts inside the tank ( I believe that it is called the dome ?) must be C276/Hasteloy C
Why not call your local acid supplier and ask what he uses in his storage tanks ?
Be respectful and let us know about your final decision and the reasons for it.....
Regards
RE: Acid tank level indication
However Perry as above shows polyethylene (PE), PVC (unplasticised ?), epoxy resins, polyesters, etc, as suitable materials. Some of them could be the base for a low budget solution of floating ball system, complying with several previous suggestions. Moreover a "guiding" pipe seems to be needed, especially for a "circulating tank".
A thick pipe of hard PE, or probably PVC, could be appropriate. Avoiding bending is assumed possible for a pipe length of (say) 6 ft (2 ft clearance from bottom). At first look, this would be preferable to the option of plastic coated steel pipe.
I would address to same vendor for a proposal on a floating ball + guiding pipe, according to its experience.
Yes, MJCronin, final implementation would be useful for us to know.
(note: my actual experience concerns phosphoric acid tanks).
RE: Acid tank level indication
RE: Acid tank level indication
Thanks again and I will be sure to update when the permanent system is functional
RE: Acid tank level indication
The acid is eating away at either. You have a potential leak at a low elevation in the tank.
RE: Acid tank level indication
put the tank on load cells.
Kind Regards,
hahor
RE: Acid tank level indication
RE: Acid tank level indication
I suggest ultrasonic level transmitter is off course a good option. However, we have experienced that some times, this sensor malfuntions if there are extensive fumes generation and hence condensation on sensor. Similarly, in case your tank pressurizes,then it may again malfunction
Best Regards
aahmed