Production of diisopropyl ether

Details Production of diisopropyl ether Production of diisopropyl ether

C - Chemistry, Metallurgy

07

C

C07C 41/09 (2006.01) C07C 41/05 (2006.01) C07C 43/04 (2006.01)

Patent

CA 2041239

-13- F-5723 ABSTRACT PRODUCTION OF DIISOPROPYL ETHER In a diisopropyl ether production process the distillation step for the separation of aqueous IPA recovered from the DIPE extraction operations is modified to avoid carrying out the distillation under conditions that yield IPA-water azeotrope. The overhead and bottom streams from an aqueous IPA fractionation process operated under off-azeotrope conditions in DIPE production are recycled, respectively, to the DIPE reactor and extractor operations. Recycling the water and IPA overhead mixture eliminates the requirement for adding fresh water to the DIPE reactor. Returning the water and IPA bottom stream to the extractor reduces the requirement for distilled water addition to the extraction step. A less complex and costly aqueous IPA separation process results.

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