Patent ID: 7687048

Claim:
A process for treating an ethylene-rich hydrocarbon and carbon dioxide-containing stream, said process comprising: contacting at least a portion of the ethylene-rich hydrocarbon and carbon dioxide-containing stream in an absorption zone with an amine absorption solvent and at contact conditions effective to absorb a significant portion of the carbon dioxide from the contacted portion of the ethylene-rich hydrocarbon and carbon dioxide-containing stream and to form a hydrocarbon-containing process stream substantially free of carbon dioxide and a carbon dioxide-rich amine absorption solvent-containing process stream including ethylene; processing at least a portion of the carbon dioxide-rich amine absorption solvent-containing process stream in a first stripping zone at first stripping conditions effective to strip at least a portion of hydrocarbons remaining in the carbon dioxide-rich amine absorption solvent-containing process stream to form a first process stream comprising stripped hydrocarbons including ethylene and less than 1 wt % of carbon dioxide and a second process stream comprising carbon dioxide and amine absorption solvent; and processing at least a portion of the second process stream in a second stripping zone at second stripping conditions effective to strip at least a portion of the carbon dioxide from the second process stream to form a carbon dioxide purge stream and an amine stream.