SELECTIVE RECOVERY OF C2+ HYDROCARBONS FROM NATURAL GAS FOR STEAM CRACKER FEED IN AN INTEGRATED REFINERY AND STEAM CRACKER COMPLEX USING PRESSURE SWING ADSORPTION

摘要

The invention provides for sending a natural gas stream through a pressure swing adsorption unit to send a gas stream comprising mainly nitrogen, methane and hydrogen to a fuel gas stream and a gas stream comprising a significant majority of C2+ hydrocarbons from the natural gas stream to a tail gas stream to then go to a stream cracker.

主权项

1. A process for treating a natural gas stream comprising:
(a) sending a natural gas stream to at least one pressure swing adsorption unit; and (b) separating said natural gas stream into a fuel gas stream and a tail gas stream, wherein the fuel gas stream comprises a higher concentration of methane and nitrogen than said natural gas stream and said tail gas stream comprises a higher concentration of C2+ hydrocarbons than said natural gas stream.