Title:
多重後蒸留を伴うシクロヘキサノン生産プロセス
Document Type and Number:
Japanese Patent JP2011506546
Kind Code:
A
Abstract:
The present invention relates to a method for continuously preparing cyclohexanone from phenol making use of a catalyst comprising at least one catalytically active metal selected from platinum and palladium comprising hydrogenating phenol to form a product stream comprising cyclohexanone and unreacted phenol; separating at least part of the product stream, or at least part of the product stream from which one or more components having a lower boiling point than cyclohexanone have been removed, into a first fraction comprising cyclohexanone and a second fraction comprising phenol and cyclohexanol, using distillation; separating the second fraction into a third fraction, rich in cyclohexanol, and a fourth fraction, rich in phenol, using distillation; -subjecting at least part of the fourth fraction to a further distillation step, thereby forming a fifth fraction and a sixth fraction, wherein the fifth fraction is enriched in phenol compared to the sixth fraction, and wherein the sixth fraction comprises side-products having a higher boiling point than phenol, and phenol; and which method is characterized in the additional step of continuously or intermittently separating at least part of the sixth fraction to yet a further distillation step, thereby forming a seventh fraction and an eight fraction, wherein the seventh fraction is enriched in phenol compared to the eight fraction, and wherein the eight fraction comprises side-products having a higher boiling point than phenol.
Inventors:
Dormont, Juan, Gauder Fridas Maria
Holcelus, Marlin
Parton, Rudy Francois Maria Joseph
Tinge, Johann Thomas
Holcelus, Marlin
Parton, Rudy Francois Maria Joseph
Tinge, Johann Thomas
Application Number:
JP2010538653A
Publication Date:
March 03, 2011
Filing Date:
December 16, 2008
Export Citation:
Assignee:
DSM IP ASSETS B.V.
International Classes:
C07C45/00; C07C49/303; C07B61/00
Domestic Patent References:
| JP2011506545A | 2011-03-03 | |||
| JP2011506547A | 2011-03-03 |
Foreign References:
| US4306944A | 1981-12-22 |
Attorney, Agent or Firm:
Yuichi Yamada
Masakazu Noda
Yoshinori Shimizu
Ikeda adult
Masakazu Noda
Yoshinori Shimizu
Ikeda adult