Thanks for the link, at our plant we only use liquid seal pots.
The problem right now is that HAZOPs usually require proof that these liquid seals prevent the tank from being pressurised above its design pressure. At low flow this is not a problem as the gas will bubble through the liquid seal...
The central tube is connected to the tank.
In one instance we're working with 100 inches water column (250mbar)
I'm afraid I am not familiar with the term roof sleeve, what do you mean by this?
Moltenmetal, do you have any suggestions as to how I can check whether our liquid seals were designed correctly? (I know this is not an easy, if not impossible, question without seeing the flowsheet or installation drawings, but any suggestions as to how we can proceed in making our plant...
Thank you both for the replies!
I agree that some of the liquid seals will not be adequate as a measure against overpressure, depending on the scenario's, and will have to be replaced.
I was wondering though, up to which gas velocities can liquid seals be considered as a reliable overpressure...
Hi,
At our plant we have several tanks protected against overpressure by a liquid seal.
These liquid seals consist of a small pipe in another pipe with a larger diameter and a closed bottom end. (I've added a basic sketch for clarity)
In case of overpressure the liquid will move upwards and at...
