PROCESS FOR PRODUCING (METH)ACRYLIC ACID

Title:

PROCESS FOR PRODUCING (METH)ACRYLIC ACID

Document Type and Number:

WIPO Patent Application WO/2003/076380

Kind Code:

A1

Abstract:

A process for producing (meth)acrolein or (meth)acrylic acid by vapor phase catalytic oxidation of propylene, propane or isobutylene in an oxidation reactor, characterized in that the raw material mixed gas introduced to the oxidation reactor is adjusted to have a temperature higher than the dew point of the mixed gas. The process allows the prevention of the variation in the composition of the raw material mixed gas, the abnormal temperature elevation of the oxidation reactor, and the reduction of catalyst activity and catalyst life, which leads to the production of (meth)acrylic acid and a derivative thereof with stability and with good efficiency.

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Inventors:

YADA SHUHEI (JP)
HOSAKA HIROCHIKA (JP)
JINNO KIMIKATSU (JP)

Application Number:

PCT/JP2003/002856

Publication Date:

September 18, 2003

Filing Date:

March 11, 2003

Export Citation:

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Assignee:

MITSUBISHI CHEM CORP (JP)
YADA SHUHEI (JP)
HOSAKA HIROCHIKA (JP)
JINNO KIMIKATSU (JP)

International Classes:

C07B61/00; C07C45/33; C07C45/35; C07C47/22; C07C51/215; C07C51/25; C07C57/05; (IPC1-7): C07C45/33; C07C47/22; C07C57/05

Foreign References:

US4873368A	1989-10-10
US4365087A	1982-12-21
JPS5815934A	1983-01-29
JP2000053610A	2000-02-22

Other References: