Patent ID: 7396972

Claim:
A process for forming an olefin stream, the process comprising: (a) separating a CO 2 -containing stream from a first natural gas stream, the natural gas stream comprising at least 2 mol % CO 2 and the CO 2 -containing stream comprising at least 75% CO 2 by weight; (b) reforming a second natural gas stream to form a synthesis gas stream; (c) adding at least a portion of the separated CO 2 -containing stream into the synthesis gas stream; (d) contacting the synthesis gas stream with a carbon oxide conversion catalyst to form a methanol composition comprising: i. at least 50 wt % and less than 99.85 wt % methanol, based on total weight of the methanol composition, ii. greater than 10 wppm and not greater than 15 wt % ethanol, based on total weight of the methanol composition, and iii. greater than 10 wppm and not greater than 15 wt % acetaldehyde, based on total weight of the methanol composition; and (e) contacting the methanol composition with an olefin forming catalyst to form an olefin stream comprising greater than 65 wt % ethylene and propylene.