Title:
METHOD FOR PRODUCING (METH)ACROLEIN AND METHOD FOR PRODUCING (METH)ACRYLIC ACID
Document Type and Number:
WIPO Patent Application WO/2021/157425
Kind Code:
A1
Abstract:
A method for producing (meth)acrolein by the vapor-phase catalytic oxidation of propylene or isobutylene in a multitubular reactor having a plurality of reaction tubes which are each equipped with a reaction zone packed with a catalyst comprising molybdenum oxide and a cooling zone packed with one or more inert substances, wherein a heat medium flowing outside the cooling zone has a lower temperature than a heat medium flowing outside the reaction zone and the inert substances include an inert substance having a major-axis length which is at least 1.7 times that of the catalyst; and a method for producing (meth)acrylic acid in which the obtained (meth)acrolein is converted to (meth)acrylic acid by vapor-phase catalytic oxidation.
Inventors:
OGAWA YASUSHI (JP)
ABE YOSHIMUNE (JP)
NAKAMURA TAKUYA (JP)
ABE YOSHIMUNE (JP)
NAKAMURA TAKUYA (JP)
Application Number:
PCT/JP2021/002603
Publication Date:
August 12, 2021
Filing Date:
January 26, 2021
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
C07C27/14; C07B61/00; C07C45/35; C07C47/22
Domestic Patent References:
| WO2010032665A1 | 2010-03-25 |
Foreign References:
| JPH11130722A | 1999-05-18 | |||
| JPS6354942A | 1988-03-09 | |||
| JPH0613096A | 1994-01-21 | |||
| JPH0638918A | 1994-02-15 | |||
| JP2020017679A | 2020-01-30 |
Other References:
CHEMICAL ENGINEERING, 18 January 1988 (1988-01-18), pages 111 - 114
See also references of EP 4101831A4
See also references of EP 4101831A4
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
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