Configurations and methods for deep feed gas hydrocarbon dewpointing

摘要: An natural gas processing plant allows for recovery of at least 98% butane and heavier hydrocarbons, about 60 to 80% propane hydrocarbons from a rich feed stream with single fractionator that operates two different pressures, receives chilled turboexpander in the upper C5+ liquid lower section, while producing C2- vapor section is used as reflux section. Most typically, contemplated configurations methods operate without use external refrigeration.