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Patent Searching and Data


Title:
METHOD FOR PRODUCING ACETALDEHYDE
Document Type and Number:
WIPO Patent Application WO/2014/119185
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a method for producing acetaldehyde from acetic acid in an industrially efficient manner and with reduced energy consumption. The method for producing acetaldehyde from acetic acid according to the present invention is a method for producing acetaldehyde from acetic acid, and is characterized by comprising at least: (A) a condensation step of supplying a gaseous reaction product produced by hydrogenating acetic acid into a condenser to produce a condensed solution and an uncondensed gas; (B) an absorption step of bringing the uncondensed gas produced in the condensation step (A) into contact with an acetic-acid-containing solvent to cause acetaldehyde contained in the uncondensed gas to be absorbed in the acetic-acid-containing solvent; and (C) an acetaldehyde purification step of subjecting the condensed solution produced in the condensation step (A) and an acetaldehyde-absorbed solution produced in the absorption step (B) to distillation to separate acetaldehyde from unconverted acetic acid and water that is a byproduct.

Inventors:
SAITO, Akira (1239 Shinzaike, Aboshi-ku, Himeji-sh, Hyogo 83, 〒6711283, JP)
Application Number:
JP2013/084504
Publication Date:
August 07, 2014
Filing Date:
December 24, 2013
Export Citation:
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Assignee:
DAICEL CORPORATION (3-4-5, Umeda Kita-ku, Osaka-sh, Osaka 01, 〒5300001, JP)
International Classes:
C07C47/06; C07C45/41; C07B61/00
Foreign References:
JPH11322658A
JPS5791943A
JPS56164126A
JP2011529494A
Attorney, Agent or Firm:
GOTO, Yukihisa (Minamimorimachi Kyodo Bldg, 2nd Floor 2-18, Kobai-cho, Kita-ku, Osaka-sh, Osaka 38, 〒5300038, JP)
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