Method and apparatus for dispensing compressed natural gas...

B - Operations – Transporting – 60 – S

Patent

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Details

B60S 5/02 (2006.01) B67D 7/04 (2010.01)

Patent

CA 2525368

A fueling facility and method for dispensing liquid natural gas (LNG), compressed natural gas (CNG) or both on-demand. The fueling facility may include a source of LNG, such as cryogenic storage vessel. A low volume high pressure pump is coupled to the source of LNG to produce a stream of pressurized LNG. The stream of pressurized LNG may be selectively directed through an LNG flow path or to a CNG flow path which includes a vaporizer configured to produce CNG from the pressurized LNG. A portion of the CNG may be drawn from the CNG flow path and introduced into the CNG flow path to control the temperature of LNG flowing therethrough. Similarly, a portion of the LNG may be drawn from the LNG flow path and introduced into the CNG flow path to control the temperature of CNG flowing therethrough.

L'invention concerne un poste de ravitaillement et un procédé pour distribuer du gaz naturel liquéfié (GNL), du gaz naturel comprimé (GNC) ou les deux sur demande. Ce poste de ravitaillement peut contenir une source de GNL, telle qu'une cuve de stockage cryogénique. Un pompe haute pression à bas volume est reliée à cette source de GNL pour produire un flux de GNL sous pression. Ce flux de GNL sous pression peut être dirigé de manière sélective à travers un circuit de GNL ou vers un circuit de GNC qui comporte un vaporiseur conçu pour produire du GNC à partir du GNL sous pression. Une partie du GNC peut être extraite du circuit de GNC et introduite dans le circuit de GNC pour réguler la température du GNL circulant à travers ce circuit. De façon similaire, une partie du GNL peut être extraite du circuit de GNL et introduite dans le circuit de GNC pour réguler la température du GNC circulant à travers ce circuit.

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