In processing natural gas for {HEAD ~ the removal} of nitrogen, {TAIL ~ hydrocarbon recoveries} of greater than 99 mol % are achieved 
In processing natural gas for { HEAD ~ the removal } of nitrogen , { TAIL ~ hydrocarbon recoveries } of greater than 99 mol % are achieved
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH