would otherwise be required side reboiler 68 and demethanizer feed preheater 38 allow reduced duty cycles in bottom reboiler 70 alternatively reflow of either the first portion 58 or the second portion 62 of the condensed lng product stream 54 may be omitted if reflow of the first portion 58 of the condensed lng product stream 54 is omitted there will be no reflow to the flash absorber 32 if reflow of the second portion 62 of the condensed lng product stream 54 is omitted there will be no reflow to the demethanizer 40 in either case the overall efficiency of the ngl recovery would be lessened relative to that available by using both reflows demethanizer bottom product 72 may be pumped by ngl product pump 74 to ngl terminal 76 for delivery as y grade ngl product similarly lng product 78 is delivered to lng terminal 80 an alternative treatment of the ngl product may be provided by delivering demethanizer bottom product 72 to a deethanizer 82 details not shown and using ethane delivery pump 84 and ngl delivery pump 88 to deliver ethane and y grade ngl product to ethane terminal 86 and y grade ngl product terminal 90 respectively those of skill in the art will recognize that heat exchange relationships may be altered in the above description without departing from the spirit of the invention so long as flow streams are heated and cooled appropriately to maintain desired operating conditions accordingly selection of various flow streams used in heat exchangers as described above is a matter of engineering preference and efficiency the above examples are included for demonstration purposes only and not as limitations on the scope of the invention other variations.