Title:
PROCESS FOR PRODUCING (METH)ACRYLIC ACID AND (METH)ACRYLIC ESTER
Document Type and Number:
WIPO Patent Application WO/2005/115962
Kind Code:
A1
Abstract:
A process for producing (meth)acrylic acid and a (meth)acrylic ester in which a long-term continuous stable operation is possible. The process for producing (meth)acrylic acid and a (meth)acrylic ester comprises: a step (A) in which propane, propylene, or isobutylene and/or (meth)acrolein is catalytically oxidized with either molecular oxygen or a gas containing molecular oxygen in a vapor phase to obtain crude (meth)acrylic acid; a step (B) in which the crude (meth)acrylic acid is purified to obtain a product of (meth)acrylic acid; and a step (C) in which the crude (meth)acrylic acid is reacted with an alcohol to produce a (meth)acrylic ester, the step (B) and step (C) being arranged in parallel. When the plant of either the step (B) or step (C) stops, the surplus crude (meth)acrylic acid yielded is temporarily stored in a tank. After the stopped plant is restored, the crude (meth)acrylic acid stored in the tank is supplied to the plant of the step (B) and/or step (C). The plant to be used in the step (A) has been designed so that the production capacity thereof is lower than the total consumption capacity of the plant to be used in the step (B) and that in the step (C).
Inventors:
YADA SHUHEI (JP)
TAKASAKI KENJI (JP)
OGAWA YASUSHI (JP)
SUZUKI YOSHIRO (JP)
TAKASAKI KENJI (JP)
OGAWA YASUSHI (JP)
SUZUKI YOSHIRO (JP)
Application Number:
PCT/JP2004/015696
Publication Date:
December 08, 2005
Filing Date:
October 22, 2004
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
YADA SHUHEI (JP)
TAKASAKI KENJI (JP)
OGAWA YASUSHI (JP)
SUZUKI YOSHIRO (JP)
YADA SHUHEI (JP)
TAKASAKI KENJI (JP)
OGAWA YASUSHI (JP)
SUZUKI YOSHIRO (JP)
International Classes:
B01J19/00; C07B61/00; C07C51/16; C07C51/215; C07C51/235; C07C51/25; C07C51/44; C07C57/05; C07C67/08; C07C69/52; C07C69/54; B01D3/14; B01D3/32; (IPC1-7): C07C57/05; C07C51/215; C07C51/235; C07C51/25; C07C67/08; C07C69/54
Domestic Patent References:
| WO1999006348A1 | 1999-02-11 |
Foreign References:
| JP2003176253A | 2003-06-24 | |||
| JP2004091424A | 2004-03-25 | |||
| JP2003073327A | 2003-03-12 | |||
| JP2003183219A | 2003-07-03 |
Other References:
See also references of EP 1749813A4
Attorney, Agent or Firm:
Okada, Kazuhiko (6F Kudan Kangyo Bldg., 10-1, Kudan-Kita 1-chom, Chiyoda-ku Tokyo 73, JP)
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