Title:
SEPARATION OF PHENOL FROM 1-PHENYLETHANOL, ACETOPHENONE OR MIXTURE THEREOF
Document Type and Number:
Japanese Patent JP3812851
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce problems in disposal of used caustic wastes and economically separate phenol from a mixture by carrying out the extractive distillation of the mixture, etc., produced by an oxirane propylene oxide/styrene monomer process with sulfolane.
SOLUTION: The extractive distillation of (A) (A2) 1-phenylethanol or (A3) acetophenone containing a contanimating amount of (A1) phenol or a mixture thereof is carried out by using (B) a sulfolane extractive distillation agent effective in reducing the volatility of the component A1 as compared with those of the components A2, and A3 in an extractive distillation column 1 to separate the components A2 and A3 from the component A in the column top of the extractive distillation column 1. The separated components A2, and A3 are then taken out through a pipe 4 and the column bottom stream containing he components A1 and B is fed to a stripper 6 and distilled to separate the component A1 in the column top of the stripper 6. The separated component A1 is then recovered through a pipe 7. Furthermore, the component B is preferably pretreated with a basic ion exchange resin for use.
Inventors:
Tim Thiouon
Stefan H Harris
Thomas Suzak
Taechan
Stefan H Harris
Thomas Suzak
Taechan
Application Number:
JP17978396A
Publication Date:
August 23, 2006
Filing Date:
June 21, 1996
Export Citation:
Assignee:
ARCO CHEMICAL TECHNOLOGY LP
International Classes:
C07C29/84; C07C33/22; C07C37/80; C07C39/04; C07C45/83; C07C49/78; (IPC1-7): C07C33/22; C07C29/84; C07C37/80; C07C39/04; C07C45/83; C07C49/78
Domestic Patent References:
| JP6009594A | ||||
| JP8133995A | ||||
| JP6072911A |
Attorney, Agent or Firm:
Masamitsu Akizawa
Akira Satake
Akira Satake