Carbon dioxide fractionalization process
First Claim
1. A process comprising:
- receiving a hydrocarbon feed stream comprising carbon dioxide;
separating the hydrocarbon feed stream into a light hydrocarbon stream and a heavy hydrocarbon stream;
separating the light hydrocarbon stream into a carbon dioxide-rich stream and a carbon dioxide-lean stream;
andexchanging heat between the hydrocarbon feed stream and the carbon dioxide-lean stream;
feeding the carbon dioxide-lean stream into a hydrocarbon sweetening process, thereby increasing the processing capacity of the hydrocarbon sweetening process compared to the processing capacity of the hydrocarbon sweetening processwhen fed the hydrocarbon feed stream.; and
cooling the light hydrocarbon stream with the carbon dioxide-lean stream.
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Abstract
A process comprising receiving a hydrocarbon feed stream comprising carbon dioxide, separating the hydrocarbon feed stream into a light hydrocarbon stream and a heavy hydrocarbon stream, separating the light hydrocarbon stream into a carbon dioxide-rich stream and a carbon dioxide-lean stream, and feeding the carbon dioxide-lean stream into a hydrocarbon sweetening process, thereby increasing the processing capacity of the hydrocarbon sweetening process compared to the processing capacity of the hydrocarbon sweetening process when fed the hydrocarbon feed stream. Included is an apparatus comprising a first separation unit that receives a hydrocarbon feed stream containing carbon dioxide and produces a heavy hydrocarbon stream and a light hydrocarbon stream, and a second separation unit that receives the light hydrocarbon stream and produces a carbon dioxide-rich stream and a carbon dioxide-lean stream, wherein the apparatus is configured to feed the carbon dioxide-lean stream to a physical solvent, membrane, or carbon dioxide recovery process.
61 Citations
22 Claims
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1. A process comprising:
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receiving a hydrocarbon feed stream comprising carbon dioxide; separating the hydrocarbon feed stream into a light hydrocarbon stream and a heavy hydrocarbon stream; separating the light hydrocarbon stream into a carbon dioxide-rich stream and a carbon dioxide-lean stream;
andexchanging heat between the hydrocarbon feed stream and the carbon dioxide-lean stream; feeding the carbon dioxide-lean stream into a hydrocarbon sweetening process, thereby increasing the processing capacity of the hydrocarbon sweetening process compared to the processing capacity of the hydrocarbon sweetening processwhen fed the hydrocarbon feed stream.; and cooling the light hydrocarbon stream with the carbon dioxide-lean stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 16)
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12. A process comprising:
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receiving a hydrocarbon feed stream comprising carbon dioxide; cooling the hydrocarbon feed stream using a carbon dioxide-lean stream; separating the cooled hydrocarbon feed stream into a light hydrocarbon stream and a heavy hydrocarbon stream; compressing the light hydrocarbon stream; cooling the compressed light hydrocarbon stream using the carbon dioxide-lean stream; separating the compressed light hydrocarbon stream into a carbon dioxide-rich stream and the carbon dioxide-lean stream; and removing at least some of the carbon dioxide in the carbon dioxide-lean stream using a hydrocarbon sweetening process. - View Dependent Claims (13, 14, 15)
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17. A process comprising:
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receiving a hydrocarbon feed stream comprising carbon dioxide; separating the hydrocarbon feed stream into a light hydrocarbon stream and a heavy hydrocarbon stream; separating the light hydrocarbon stream into a carbon dioxide-rich stream and a carbon dioxide-lean stream; cooling the light hydrocarbon stream using the carbon-dioxide lean stream; and feeding the carbon dioxide lean stream into a hydrocarbon sweetening process, thereby increasing the processing capacity of the hydrocarbon sweetening process when fed the hydrocarbon feed stream. - View Dependent Claims (18)
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19. A process comprising:
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receiving a hydrocarbon feed stream comprising carbon dioxide; separating the hydrocarbon feed stream into a light hydrocarbon stream and a heavy hydrocarbon stream; separating the light hydrocarbon stream into a carbon dioxide-rich stream and a carbon dioxide-lean stream; cooling the light hydrocarbon stream with the carbon dioxide-lean stream; further processing the heavy hydrocarbon stream; feeding the carbon-dioxide-rich stream to further processing including at least one heat exchanger; and feeding the carbon dioxide-lean stream into a hydrocarbon sweetening process comprising a SELEXOL plant, thereby increasing the processing capacity of the hydrocarbon sweetening process when fed the hydrocarbon feed stream. - View Dependent Claims (20, 21, 22)
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Specification