Process and apparatus for the production of ether-rich fuel

Details Process and apparatus for the production of ether-rich fuel Process and apparatus for the production of ether-rich fuel

C - Chemistry, Metallurgy

07

C

260/648, 23/395.

C07C 41/06 (2006.01) B01J 19/00 (2006.01) C07C 43/04 (2006.01)

Patent

CA 2022308

ABSTRACT OF THE DISCLOSURE Methanol or ether alcohol is converted to high octane gasoline components by an integrated process wherein crude aqueous alcohol feedstock is extracted with a liquid extractant containing C4 + iso-olefin and reacted to form tertiary-alkyl ethers, such as MTBE. The aqueous raffinate is converted to predominantly gasoline range liquid hydrocarbons in a MTG catalytic reactor, with byproduct alkanes rich in propane and isobutane. Dehygrogenation of C3-C5 alkanes from the MTG unit provides propene and isobutene reactants for subsequent etherification steps. Propene from the MTG dehydrogenation step is reacted with water to produce di-isopropyl ether, which may he blended with MTBE and C6 + MTG hydrocarbons to produce high octane gasoline. Isobutylene and isoamylenes from the MTG dehydrogenation step can be recovered and recycled as a liquid extractant .

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