Gas liquefaction with work expansion of major feed portion

Claim 1

AN IMPROVED PROCESS FOR TRANSFORMING GAS FROM A PIPELINE AT ELEVATED PRESSURE TO LIQUID FOR STORAGE AT SUBSTANTIALLY ATMOSPHEREIC PRESSURE SOLELY WITH THE AID OF REFRIGERATION DERIVED FROM DECREASING SAID ELEVATED PRESSURE OF SAID GAS, SAID GAS CONTAINING MOISTURE AND ANOTHER CONDENSIBLE IMPURITY, WHICH COMPRISES TREATING SAID GAS TO EFFECT MOISTURE REMOVAL, DIVIDING THE TREATED GAS INTO A MINOR STREAM AND A MAJOR STREAM, REMOVING ANOTHER CONDENSIBLE IMPURITY FROM SAID MINOR STREAM, COOLING THE THUS PURIFIED MLINOR STREAM TO EFFECT IN TURN LIQUEFACTION AND SUBCOOLING OF THE LIQUID, REDUCING THE PRESSURE OF THE SUBCOOLED LIQUID TO A PRESSURE ABOVE ATMOSPHERIC PRESSURE TO YIELD FLASH VAPOR AND SUBCOOLED LIQUID PHASES, FURTHER REDUCING THE PRESSURE OF THE SUBCOOLED LIQUID PHASE WHILE DISCHARGING IT INTO A STORAGE ZONE MAINTAINED AT SUBSTANTIALLY ATMOSPHERIC PRESSURE, WITHDRAWING VAPOR FROM SAID STORAGE ZONE, PASSING THE WITHDRAWN VAPOR AND THE FLASH VAPOR PHASE IN COUNTERCURRENT AND INDIRECT HEAT EXCHANGE RELATION WITH SAID PURIFIED MINOR STEAM UNDERGOING LIQUEFACTION AND SUBCOOLING OF THE LIQWUID, COOLING SAID MAJOR STREAM TO A LOW TEMPERATURE WHICH WILL PERMIT EXPANSION OF THE COOLED MAJOR STREAM WITH THE PERFORMANCE OF WORK SUBSTANTIALLY WITHOUT LIQUEFACTION OF SAID COOLED MAJOR STREAM, EXPANDING SAID COOLED MAJOR STREAM WITH SAID PERFORMANCE OF WORK TO A PRESSURE ABOVE ATMOSPHERIC PRESSURE, PASSING THE EXPANDED MAJOR STREAM WITH SAID CURRENT AND INDIRECT HEAT EXCHANGE RELATION WITH SAID PURIFIED MINOR STREAM UNDERGOING LIQUEFACTION AND WITH SAID MAJOR STREAM UNDERGOING COOLING PRIOR TO EXPANSION, AND UTILIZING SAID PERFORMANCE OF WORK TO COMPRESS AT LEAST A PORTION OF SAID GAS.