Abstract: A method for recovering a sour natural gas liquids stream is provided. In one embodiment, a carbon dioxide recycle stream that comprises carbon dioxide, natural gas liquids, and acid gas is received. The carbon dioxide recycle stream is separated into a purified carbon dioxide recycle stream and a natural gas liquids stream. The purified carbon dioxide recycle stream comprises the carbon dioxide, and the natural gas liquids stream comprises the natural gas liquids and the acid gas. In another embodiment, a system comprises piping and a separator. The piping is configured to receive a recycle stream that comprises an injection gas, natural gas liquids, and acid gas. The separator is configured to separate the recycle stream into a purified recycle stream and a natural gas liquids stream. The purified recycle stream comprises the injection gas, and the natural gas liquids stream comprises the natural gas liquids and the acid gas.

Abstract: A method for processing heavy hydrocarbons in an NGL recovery system is provided. In one embodiment, a feed stream is separated into a carbon dioxide recycle stream and a heavy hydrocarbon stream. The heavy hydrocarbon stream comprises carbon dioxide and natural gas liquids, and the heavy hydrocarbon stream comprises heavy hydrocarbons. The carbon dioxide recycle stream is separated into a purified carbon dioxide recycle stream and a natural gas liquids stream. The purified carbon dioxide recycle stream comprises the carbon dioxide, and the natural gas liquids stream comprises the natural gas liquids. In another embodiment, a set of process equipment comprises a first separator and a second separator. The first separator is configured to separate a feed stream into a recycle stream and a heavy hydrocarbons stream, and the second separator is configured to separate the recycle stream into a purified recycle stream and a natural gas liquids stream.

Abstract: A method for processing heavy hydrocarbons in an NGL recovery system is provided. In one embodiment, a feed stream is separated into a carbon dioxide recycle stream and a heavy hydrocarbon stream. The heavy hydrocarbon stream comprises carbon dioxide and natural gas liquids, and the heavy hydrocarbon stream comprises heavy hydrocarbons. The carbon dioxide recycle stream is separated into a purified carbon dioxide recycle stream and a natural gas liquids stream. The purified carbon dioxide recycle stream comprises the carbon dioxide, and the natural gas liquids stream comprises the natural gas liquids. In another embodiment, a set of process equipment comprises a first separator and a second separator. The first separator is configured to separate a feed stream into a recycle stream and a heavy hydrocarbons stream, and the second separator is configured to separate the recycle stream into a purified recycle stream and a natural gas liquids stream.

Abstract: A method for recovering a sour natural gas liquids stream is provided. In one embodiment, a carbon dioxide recycle stream that comprises carbon dioxide, natural gas liquids, and acid gas is received. The carbon dioxide recycle stream is separated into a purified carbon dioxide recycle stream and a natural gas liquids stream. The purified carbon dioxide recycle stream comprises the carbon dioxide, and the natural gas liquids stream comprises the natural gas liquids and the acid gas. In another embodiment, a system comprises piping and a separator. The piping is configured to receive a recycle stream that comprises an injection gas, natural gas liquids, and acid gas. The separator is configured to separate the recycle stream into a purified recycle stream and a natural gas liquids stream. The purified recycle stream comprises the injection gas, and the natural gas liquids stream comprises the natural gas liquids and the acid gas.

Abstract: A method comprises receiving a hydrocarbon feed stream; separating the hydrocarbon feed stream into a heavy hydrocarbon rich stream and a recycle stream, wherein the recycle stream comprises a gas selected from the group consisting of carbon dioxide, nitrogen, air, and water; and separating the recycle stream into a natural gas liquids (NGL) rich stream and a purified recycle stream. A plurality of process equipment configured to receive a hydrocarbon feed stream, separate the hydrocarbon feed stream into a heavy hydrocarbon rich stream and a recycle stream comprising at least one C3+ hydrocarbon and a gas selected from the group consisting of carbon dioxide, nitrogen, air, and water, and separate the recycle stream into a NGL rich stream and a purified recycle stream.