Recovery of tertiary butyl hydroperoxide and tertiary butyl...

Details Recovery of tertiary butyl hydroperoxide and tertiary butyl... Recovery of tertiary butyl hydroperoxide and tertiary butyl...

C - Chemistry, Metallurgy

07

D

260/372.3, 260/6

C07D 301/19 (2006.01) C07C 29/48 (2006.01) C07C 29/80 (2006.01) C07C 31/12 (2006.01) C07C 407/00 (2006.01) C07D 301/32 (2006.01) C07D 303/04 (2006.01)

Patent

CA 2026939

RECOVERY OF TERTIARY BUTYL HYDROPEROXIDE AND TERTIARY BUTYL ALCOHOL (Docket No. 80,727-F) ABSTRACT OF THE DISCLOSURE A heavy distillation fraction comprising tertiary butyl hydroperoxide, tertiary butyl alcohol, impurities and dis- solved molybdenum catalyst resulting from the removal of propylene, propylene oxide and tertiary butyl alcohol from an epoxidation reaction product is mixed with about 5 to about 10 wt.%, based on the weight of the heavy liquid dis- tillation fraction, of a lower aliphatic alcohol containing from l to 3 carbon atoms to provide a charge mixture, and the charge mixture is: charged to a falling film evaporator and separated therein, under evaporator operating conditions including a temperature within the range of about 20° to about 150°C. and a pressure of about l to about 200 mm Hg., into an overhead vaporized fraction comprising substantially all of the aliphatic alcohol and from about 90 to about 95 wt.% of the heavy distillation fraction charged to the falling film evaporator. The practice of the present invention will also provide a clear liquid falling film evaporator residue fraction comprising tertiary butyl hydroperoxide, tertiary butyl alcohol, substantially all of the molybdenum contained in the heavy liquid fraction, and impurities.

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