发明名称 |
Process |
摘要 |
<p>A process is described for the recovery of substantially pure ethyl acetate from a feedstock comprising ethyl acetate, ethanol and water. This uses a first distillation zone maintained under first distillation conditions effective for distillation therefrom of a first distillate comprising 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, which are effective for distillation therefrom of a second distillate comprising ethanol, water, and a minor proportion of ethyl acetate and which yield a substantially pure ethyl acetate bottom product, which is recovered. The second distillate is returned to the first distillation zone. A typical feedstock to the process contains less than about 20 mol % water which is supplied to the first distillation zone. Typically the first distillation zone is operated at a pressure of less than about 4 bar (2 x 10<5> Pa), while the second distillation zone is preferably operated at a pressure of from about 9 bar (9 x 10<5> bar) absolute to about 15 bar (1.5 x 10<6> Pa) absolute. <IMAGE></p> |
申请公布号 |
EP0992482(A1) |
申请公布日期 |
2000.04.12 |
申请号 |
EP19980308010 |
申请日期 |
1998.10.01 |
申请人 |
KVAERNER PROCESS TECHNOLOGY LIMITED |
发明人 |
COLLEY, STEPHEN WILLIAM;FAWCETT, CHRISTOPHER RICHARD;SHARIF, MOHAMMAD;TUCK, MICHAEL WILLIAM MARSHALL;WATSON, DAVID JOHN;WOOD, MICHAEL ANTHONY |
分类号 |
C07C67/54;C07C69/14;(IPC1-7):C07C67/54 |
主分类号 |
C07C67/54 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|