METHOD FOR DEGASSING OF VERTICAL CYLINDRICAL VESSELS BEFORE REPAIR Russian patent published in 2014 - IPC B08B9/08 

FIELD: machine building.

SUBSTANCE: for degassing purposes fluid is removed from a vessel, then it is cleaned from fluid residues by raising them by means of water bottom and cleaned from hard deposits by rinsing them with jets from jetting heads and washing machines. Oil, oil products or cleaning water solutions are used for rinsing. Afterwards air from a fan is supplied to the vessel on two opposite axially symmetrical sides of the vessel along its walls in flows/jets in opposite direction. Incoming air flows/jets provide for swirling of supply air in the vessel plane and for forming of a vortex which is mixed with the gas present in the vessel and is forced out from the vessel through a gas outlet pipe installed on the vessel roof strictly in its centre. At swirling air supply into the vessel inside, the two axially symmetrical flows provide for the circulation motion of liquid at the vessel bottom.

EFFECT: more enriched mixture is forced out at mixing of collision planes of fluid and supplied air in a vessel.

5 tbl, 5 dwg