| abstract |
A method for the recovery of natural gas liquor is disclosed, which process comprises a gas stream comprising nitrogen, methane, ethane, and propane and other C3 + hydrocarbons, a light fraction comprising nitrogen, methane, ethane, and propane and propane and other Fractionating into two or more fractions, including a heavy fraction comprising C3 + hydrocarbons; Separating the hard fraction into two or more fractions including a nitrogen-rich fraction and a nitrogen-depleted fraction in a first separator; Separating the nitrogen-depleted fraction into a propane-rich fraction and a propane-depleted fraction in a second separator; Feeding at least a portion of the propane-rich fraction to the fractionation step as reflux; Recycling at least a portion of the propane-depleting fraction to the first separator. In some embodiments, the nitrogen-rich fractions can be separated in a nitrogen removal unit to produce a nitrogen-depleted natural gas stream and a nitrogen-rich natural gas stream. |