Title:
アセトアルデヒドの製造方法
Document Type and Number:
Japanese Patent JP6700327
Kind Code:
B2
Abstract:
Provided is a method for producing high-purity acetaldehyde from acetic acid inexpensively and industrially efficiently. The present invention relates to a method for producing acetaldehyde via acetic acid hydrogenation. The method hydrogenates acetic acid to give a reaction fluid. The reaction fluid is charged into an absorber. From the reaction fluid, condensed components are absorbed with an absorbing liquid, and non-condensable gases are dissolved in the absorbing liquid. A bottom liquid of the absorber is decompressed (reduced in pressure) to strip the dissolved non-condensable gases from the absorbing liquid. The residual liquid after the non-condensable gas stripping is recycled to the absorber.
Inventors:
Kawabe Masato
Nohisa Mizutani
Nohisa Mizutani
Application Number:
JP2018047617A
Publication Date:
May 27, 2020
Filing Date:
March 15, 2018
Export Citation:
Assignee:
Daicel Corporation
International Classes:
C07C45/41; C07C45/82; C07C47/06; C07C67/08; C07C69/14
Domestic Patent References:
| JP11322658A | ||||
| JP1099603A | ||||
| JP2001072623A | ||||
| JP2010065001A | ||||
| JP8012612A | ||||
| JP60226839A | ||||
| JP2006096764A | ||||
| JP2003137830A | ||||
| JP8040966A | ||||
| JP50034522B1 |
Attorney, Agent or Firm:
Goto Patent Office