Oxygen removal concept for the sodium nitrite butadiene feeding tank
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Sodium nitrite in the butadiene plant serves as an antioxidant, and it is necessary to remove the air from the tank during its addition. The traditional method is to use nitrogen for displacement. I have an idea: to install a pipeline at the top of the tank that leads to the OD line, along with a sight glass. Using a solvent to remove oxygen from the tank completely – I’m not sure if this is feasible; I would appreciate some advice from those with experience. My account level is too low, so I can’t apply textures; it seems that the images uploaded elsewhere don’t display either. I wonder if there’s any other way?
Great, I think by doing it this way you’ve indeed saved a step, and it’s also a closed-system discharge – good idea.
I have a question: even if you use sealed emission, the oxygen in this tank is still introduced into the system. Where is it finally discharged from?
It is recommended to first flush in nitrogen for displacement, and then use the method you mentioned to remove the gas from the tank.