Title:
【発明の名称】アルキレンオキシドを調製する方法
Document Type and Number:
Japanese Patent JP2003507374
Kind Code:
A
Abstract:
Process for the preparation of alkylene oxide, which process comprises passing a feed comprising an organic hydroperoxide and alkene through a bank of at least two serially connected reactors all containing a bed of heterogeneous epoxidation catalyst particles and operated in a cyclic mode, in which process:(a) the first reactor of the cyclically operated bank is put in a position further down this bank, when the activity of the epoxidation catalyst contained therein has decreased to an undesirably low level;(b) in this position the catalyst with decreased activity is contacted with the effluent from the reactor in the preceding position at a temperature which is at least 5° C. higher than the final temperature at which the catalyst was in use in the first position of the bank and for sufficient time to restore its activity to the desired level. The bank of cyclically operated epoxidation reactors may be followed by one or more additional fixed bed epoxidation reactors which are not operated cyclically.
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Inventors:
Delx,willem
Dale Kuzwaher, Hendrick
Juan del Fouen, Alexander Yang
Wermelling, Ruthher Johannes Franciscus
Dale Kuzwaher, Hendrick
Juan del Fouen, Alexander Yang
Wermelling, Ruthher Johannes Franciscus
Application Number:
JP2001517515A
Publication Date:
February 25, 2003
Filing Date:
August 16, 2000
Export Citation:
Assignee:
Ciel International Research Mart Shats Pay BV
International Classes:
B01J21/20; B01J38/04; C07B61/00; C07D301/19; C07D303/04; (IPC1-7): C07D301/19; C07D303/04
Foreign References:
| WO1999001445A1 | 1999-01-14 | |||
| WO1999032472A1 | 1999-07-01 | |||
| WO1999001445A1 | 1999-01-14 | |||
| WO1999032472A1 | 1999-07-01 |
Attorney, Agent or Firm:
Yoshio Kawaguchi (4 outside)