The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2009
Filed:
Sep. 29, 1999
Stephen William Colley, Dormanstown, GB;
Christopher Richard Fawcett, London, GB;
Mohammad Sharif, Middlesbrough, GB;
Michael William Marshall Tuck, London, GB;
David John Watson, London, GB;
Michael Anthony Wood, Yarm, GB;
Stephen William Colley, Dormanstown, GB;
Christopher Richard Fawcett, London, GB;
Mohammad Sharif, Middlesbrough, GB;
Michael William Marshall Tuck, London, GB;
David John Watson, London, GB;
Michael Anthony Wood, Yarm, GB;
Davy Process Technology Limited, London, GB;
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.