Process

Details Process Process

1999-09-29

2009-06-30

Manoharan, Virginia (Department: 1797)

Distillation: processes, separatory

Distilling to separate or remove only water

From organic compound

C203S019000, C203S075000, C203S077000, C203S078000, C203S080000, C560S248000, C568S890000, C568S913000, C568S916000

Reexamination Certificate

active

07553397

ABSTRACT:
A process is described for the recovery of substantially pure ethyl acetate from a feedstock including ethyl acetate, ethanol and water. The process includes supplying the feedstock to a first distillation zone maintained under first distillation conditions effective for distilling from the feedstock a first distillate including ethyl acetate, ethanol, and less than about 10 mol % water. The first distillate is recovered from the first distillation zone and is supplied to a second distillation zone maintained under second distillation conditions, which include use of a higher pressure than that of the first distillation zone. The second distillation conditions are effective for distilling from the first distillate a second distillate including ethanol, water, and a minor proportion of ethyl acetate and yielding a substantially pure ethyl acetate bottom product, which is recovered. The second distillate is returned to the first distillation zone.

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