C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
44/31, 260/648,
C07C 41/06 (2006.01) C07C 41/38 (2006.01) C07C 43/04 (2006.01) C10L 1/18 (2006.01)
Patent
CA 2027574
2027574 9011267 PCTABS00002 The process for manufacturing tertiary alkyl ethers such as MTBE, TAME and isopropyl tertiary alkyl ether and that for manufacturing di-isopropyl ether (DIPE) are integrated into an overall process to produce high octane gasoline rich in these ethers. The integration is preferably achieved in a combined separation step where the effluents from both etherification processes are fed to a water wash tower for separation into an organic phase containing C3+ hydrocarbons and oxygenates including C4+ ethers and an aqueous phase which contains methanol and isopropanol. The aqueous phase is recycled to the DIPE etherification zone while the organic phase is debutanized to produce a bottom stream comprising high octane gasoline rich ethers and an overhead stream comprising C4- hydrocarbons. The water wash step allows large excess quantities of methanol to be used in the MTBE etherification step without recycle. The invention advantageously employs a common water washing step and common debutanizing step in the manufacture of tertiary alkyl ethers and DIPE.
Harandi Mohsen N.
Owen Hartley
Harandi Mohsen N.
Kirby Eades Gale Baker
Mobil Oil Corporation
Owen Hartley
LandOfFree
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