Process for light olefins hydration and mtbe production

Details Process for light olefins hydration and mtbe production Process for light olefins hydration and mtbe production

C - Chemistry, Metallurgy

07

C

260/648

C07C 41/06 (2006.01) C07B 61/00 (2006.01) C07C 27/10 (2006.01) C07C 29/04 (2006.01) C07C 31/10 (2006.01) C07C 31/12 (2006.01) C07C 43/04 (2006.01)

Patent

CA 2018524

PROCESS FOR LIGHT OLEFINS HYDRATION AND MTBE PRODUCTION Abstract of the Disclosure A process is disclosed for converting C3 and C4 olefins to high octane ethers and alcohols. The invention incorporates C4 tertiary olefin etherification to produce lower alkyl tertiary butyl ether in a first etherification step under mild conditions and olefins hydration using zeolite catalyst in a second sequential step to produce other oxygenates. The invention comprises an integrated process for the conversion of hydrocarbon feedstock comprising C3-C4 olefins containing isobutylene to high octane alcohol and ether, including lower alkyl tertiary butyl ether, comprising the steps of: introducing the feedstock and lower alkyl alcohol to an etherification zone under isobutylene etherification conditions in contact with acidic etherification catalyst and recovering lower alkyl tertiary butyl ether and unreacted hydrocarbons comprising propylene and butene. The unreacted hydrocarbons and water are passed into an olefins hydration zone in contact with acidic hydration catalyst such as zeolite Beta under olefins hydration and etherification conditions whereby high octane gasoline boiling range C3-C8 acyclic aliphatic oxygenates are produced. In a preferred embodiment the lower alcohol comprises methanol and methyl tertiary butyl ether (MTBE) is produced.

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