Cryogenic fluid vaporizer system and process

摘要

A cryogenic liquid vaporizer system 10 comprising an outer tube 22 for exposure to the atmosphere and enclosing an inner tube 16 to form an annulus 36. The fluid enters the inner tube 16 as liquid, flows in the inner tube 16 where it is at least partially vaporized, and discharges into the outer tube 22. In one embodiment the fluid discharges near the end 34 of the outer tube 22 and counterflow in the annulus 36 where it is usually completely vaporized and partially superheated. In another embodiment, the fluid discharges into the outer tube 22 and continues to flow in the longitudinal space 38 provided by the length of outer tube 22. The annulus 36 is occupied by quiescent fluid.