Large gas bubbles in gasoline storage tanks
Large gas bubbles in gasoline storage tanks
(OP)
I am interested in determining the effect of injecting nitrogen at 5 barg into the bottom of a gasoline storage tank at atmospheric pressure.
I would like to determine if the "shock" of this gas would cause a significant wave(s) at the liquid surface.
I would like to determine if the "shock" of this gas would cause a significant wave(s) at the liquid surface.





RE: Large gas bubbles in gasoline storage tanks
API 653 Tank Inspection, Repair, Alteration,
and Reconstruction APPENDIX B—EVALUATION OF TANK BOTTOM SETTLEMENT, B.2 Types of Settlement, B.2.1 ELEVATION MEASUREMENTS, B.3 Determination of Acceptable Settlement,
B.3.3 INTERNAL BOTTOM SETTLEMENTS OR
BULGES.
RE: Large gas bubbles in gasoline storage tanks
One problem that has occurred during gas injection is floating roof damage. I have investigate a couple of roof sinkings that occurred after latge slugs of gas were inadvertantly injected into the tank product.
Steve Braune
Tank Industry Consultants
www.tankindustry.com
RE: Large gas bubbles in gasoline storage tanks
RE: Large gas bubbles in gasoline storage tanks
If you are using a non symetrical swing joint, you may face troubles.
In order to avoid this, you could use a diffuser (12"x16" for instance) with holes equally distributed. This would decrease the effects of the nitrogen bubble.
RE: Large gas bubbles in gasoline storage tanks
you must use a diffuser period. otherwise you'll have all sorts of problems