Title:
再スタートアップ方法
Document Type and Number:
Japanese Patent JP6752035
Kind Code:
B2
Abstract:
A method for producing at least one oxidation product selected from the group consisting of acrolein and acrylic acid is provided. This method can alleviate concerns about deterioration of a gas-phase oxidation catalyst and reaction runaway in a restart period after a shutdown, and can allow the reaction to proceed in a stable state. Using a fixed-bed reactor filled with a gas-phase oxidation catalyst, at least one source gas selected from the group consisting of propylene and acrolein is subjected to a gas-phase contact oxidation reaction while a heating medium is caused to contact with or circulate through the fixed-bed reactor and thereby to heat the fixed-bed reactor. The temperature of the heating medium when the load is maximum in the restart period after the shutdown is controlled to be lower than the temperature of the heating medium when the load is maximum in an initial start-up period.
Inventors:
Satoshi Kawamura
Tomoaki Kobayashi
Kurakami Tatsuhiko
Hideo Yoshida
Tomoaki Kobayashi
Kurakami Tatsuhiko
Hideo Yoshida
Application Number:
JP2016066023A
Publication Date:
September 09, 2020
Filing Date:
March 29, 2016
Export Citation:
Assignee:
NIPPON KAYAKU KABUSHIKI KAISHA
International Classes:
C07C27/14; B01J23/887; B01J38/02; C07C47/22; C07C51/235; C07C51/25; C07C57/05; C07C57/055
Domestic Patent References:
| JP2014500855A | ||||
| JP2009263352A |
Foreign References:
| WO2015008815A1 | ||||
| WO2009125658A1 | ||||
| WO2015008814A1 |