Patent ID: 7603867
Filing Date: 2009-10-20
Classification: F25J

Abstract:
1. The process that includes providing the following elements for treating source refrigerated LNG: a) a heat exchanger/condenser through which refrigerated LNG passes, b) a vaporizer receiving LNG from the heat exchanger/condenser to produce heating grade LNG product, c) a distillation column producing distillate condensed in the heat exchanger/condenser to produce vehicle grade LNG, the column having an upper outlet to pass near pure methane gas to the condenser from which said vehicle grade LNG is delivered to storage, and from which condensate is returned to the column, there being means to deliver at least some of the vehicle grade LNG to mix with LNG flowing to the vaporizer, d) the distillation column having input of refrigerated LNG from said source, e) the distillation column having a lower outlet through which produced C2+ is delivered, f) said column input located at a mid-region of the column above said column lower outlet.