Title:
エチレンのエポキシ化を操作する方法
Document Type and Number:
Japanese Patent JP5097325
Kind Code:
B2
Abstract:
There is provided a process for the vapor phase oxidation of ethylene to ethylene oxide in the presence of a supported highly selective silver-based catalyst, the process comprising operating fresh catalyst for an initial operation phase, then operating at a further operation phase when the catalyst has reached an advanced aged defined by a cumulative ethylene oxide production exceeding 1.5 kT EO per m3 of catalyst. In the further operation phase the composition of the reaction mixture is changed to contain from 1.1 to 4 times the concentration of ethylene used in the initial operation phase and the corresponding optimised and safe concentration of oxygen.
Inventors:
Wayne Eral, Evans
Chippman, Peter Ingraham
Chippman, Peter Ingraham
Application Number:
JP2002510467A
Publication Date:
December 12, 2012
Filing Date:
June 05, 2001
Export Citation:
Assignee:
Ciel International Research Mart Shats Pay BV
International Classes:
C07D301/08; C07D301/10; B01J23/68; C07B61/00; C07C29/10; C07C31/20; C07C41/02; C07C43/13; C07D303/04
Domestic Patent References:
| JP59021634A | ||||
| JP50046612A | ||||
| JP63126552A | ||||
| JP6009591A | ||||
| JP52100406A | ||||
| JP7188199A |
Attorney, Agent or Firm:
Yoshio Kawaguchi
Mitsuru Inoue
Akio Ichiiri
Makoto Ono
Katsuma Osaki
Mitsuru Inoue
Akio Ichiiri
Makoto Ono
Katsuma Osaki