| US 7,581,405 B2 | ||
| Storage vessel for cryogenic liquid | ||
| Paul Higginbotham, Guildford (United Kingdom); Kelvin Graham Hayes, East Horsley (United Kingdom); and Declan Patrick O'Connor, Chessington (United Kingdom) | ||
| Assigned to Air Products and Chemicals, Inc., Allentown, Pa. (US) | ||
| Filed on Sep. 06, 2006, as Appl. No. 11/516,220. | ||
| Claims priority of application No. 0519886.6 (GB), filed on Sep. 29, 2005. | ||
| Prior Publication US 2007/0068177 A1, Mar. 29, 2007 | ||
| Int. Cl. F17C 5/02 (2006.01); F17C 3/10 (2006.01) | ||
| U.S. Cl. 62—47.1 [62/48.2] | 13 Claims |
| 1. A storage vessel for cryogenic liquid having a lower portion for storing said cryogenic liquid and a vapor space provided
thereabove, said vessel having:
a condenser for condensing boil-off vapor by direct heat exchange with an external cryogenic liquid supply feed to the vessel,
said condenser comprising a packed arrangement of vapor-liquid contact packing, said arrangement comprising a top end portion
and a bottom end portion, wherein at least said top end portion is open to the vapor space to allow entry of boil-off vapor
into the arrangement and said bottom end portion is in fluid flow communication with the lower portion of the storage vessel;
an inlet for providing the external cryogenic liquid supply feed to the top end portion of the packed arrangement of vapor-liquid
contact packing; and
an outlet for removing cryogenic liquid from the lower portion of the vessel wherein substantially all of the refrigeration
for condensing the boil-off vapor is supplied by the external cryogenic liquid supply feed to the vessel.
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