Patent ID: 8695376
Filing Date: 2014-04-15
Classification: F17C,F25J

Abstract:
1. A method of providing a natural gas product, comprising: providing vaporized supercritical LNG at a temperature of −20° F. to 20° F. to an LNG processing unit; expanding the vaporized LNG in the LNG processing unit, and using refrigeration content of the expanded vaporized LNG to provide cooling to a first and second recompressor discharge stream and a reflux condenser to condense C2 components from a deethanizer overhead product and to thereby completely convert the expanded vaporized LNG into a heated LNG vapor stream; splitting the heated LNG vapor stream into a first and second vapor portion; condensing the first vapor portion to form a reflux stream for a demethanizer, wherein the reflux stream has a temperature sufficient for recovery of at least C2 components, and turbo-expanding the second vapor portion and feeding the expanded second vapor portion to the demethanizer; and producing a demethanizer overhead product, and feeding a demethanizer bottom product to the deethanizer.