Abstract: A process for the recovery of ethane and heavier hydrocarbon components from a hydrocarbon feed gas stream. Feed gas stream is cooled into a first and second cooled streams. First and second cooled streams are sent to a cold absorber and separated into a first gas stream and a first liquid stream. First gas stream is expanded and sent to a fractionation tower. At least a part of the first liquid stream is sent to a pre-demethanizer stripper tower. Stripper tower produces a stripper overhead stream and a stripper bottoms stream. Stripper overhead vapor stream is cooled and sent to the fractionation tower as second reflux stream. Stripper bottoms stream is supplied to the fractionation tower. Temperatures and pressures of the streams and columns are maintained to recover a major portion of ethane and heavier hydrocarbon components as a bottoms product stream, and produce a residue gas stream at the fractionation tower overhead.

Abstract: A process and apparatus for the recovery of ethane and heavier components from a hydrocarbon feed gas stream. Feed gas stream is cooled and separated into a vapor stream and a condensed stream. Vapor stream is divided into a first and a second gas streams. First gas stream is expanded and sent to a fractionation tower. Second gas stream is supplied to an absorber tower. At least a part of the first liquid stream is cooled and sent to the absorber. Absorber column produces a lean vapor stream and a second condensed stream. Lean vapor stream is cooled and sent to the fractionation tower. Second condensed stream is subcooled and supplied to the fractionation tower. Temperatures and pressures of the streams and columns are maintained to recover a major portion of ethane and heavier hydrocarbon components as bottom product, and produce at the fractionation tower overhead, a residue gas stream.

Abstract: An ethane recovery process resulting in a reduction in the amount of carbon dioxide in the recovered NGL stream is provided. To reduce the amount of carbon dioxide, a fractionation tower is provided with a bottom reboiler, and possibly one or more side reboilers higher up in the tower that are integrated with the cooling train. The process disclosed modifies the flow of cold liquid from the separator and tower reboiling to reject some of the more volatile components such as carbon dioxide from the less volatile fraction while maintaining recovery of desirable components such as C2+ hydrocarbon components. The modification includes heating a part of the separator liquid and introducing it at least one stage below the remaining liquid.