Carbon Dioxide Fractionalization
First Claim
1. A method comprising:
- separating a hydrocarbon feed stream comprising carbon dioxide into a heavy hydrocarbon stream and a light hydrocarbon stream;
separating the light hydrocarbon stream into a carbon dioxide-rich stream and a carbon dioxide-lean stream, wherein the carbon dioxide-lean stream comprises less carbon dioxide than the hydrocarbon feed stream; and
feeding at least a portion of the carbon dioxide-lean stream to a hydrocarbon sweetening process.
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Accused Products
Abstract
A method comprises separating a hydrocarbon feed stream having carbon dioxide into a heavy hydrocarbon stream and a light hydrocarbon stream. The light hydrocarbon stream is separated into a carbon dioxide-rich stream and a carbon dioxide-lean stream. At least a portion of the carbon dioxide-lean stream is fed to a hydrocarbon sweetening process. Another method comprises receiving a hydrocarbon feed stream that comprises 30 molar percent to 80 molar percent carbon dioxide. A heavy hydrocarbon stream is separated from the hydrocarbon feed stream, wherein the heavy hydrocarbon stream comprises at least 90 molar percent C3+ hydrocarbons. A carbon dioxide-rich stream is separated from the hydrocarbon feed stream, wherein the carbon dioxide-rich stream comprises at least 95 molar percent carbon dioxide.
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Citations
20 Claims
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1. A method comprising:
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separating a hydrocarbon feed stream comprising carbon dioxide into a heavy hydrocarbon stream and a light hydrocarbon stream; separating the light hydrocarbon stream into a carbon dioxide-rich stream and a carbon dioxide-lean stream, wherein the carbon dioxide-lean stream comprises less carbon dioxide than the hydrocarbon feed stream; and feeding at least a portion of the carbon dioxide-lean stream to a hydrocarbon sweetening process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15, 16)
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8. A method comprising:
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receiving a hydrocarbon feed stream that comprises 30 molar percent to 80 molar percent carbon dioxide; separating a heavy hydrocarbon stream from the hydrocarbon feed stream, wherein the heavy hydrocarbon stream comprises at least 90 molar percent C3+ hydrocarbons; and separating a carbon dioxide-rich stream from the hydrocarbon feed stream, wherein the carbon dioxide-rich stream comprises at least 95 molar percent carbon dioxide. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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17. A method comprising:
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receiving a hydrocarbon feed stream that comprises carbon dioxide; separating the hydrocarbon feed stream into a carbon dioxide-lean stream and a carbon dioxide-rich stream, wherein the carbon dioxide-lean stream comprises at least 20 molar percent less carbon dioxide than the hydrocarbon feed stream, and wherein the carbon dioxide-rich stream comprises less than 10 molar percent hydrocarbons. - View Dependent Claims (18, 19, 20)
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Specification