Title:
芳香族ジカルボン酸の製造のための2段階酸化方法
Document Type and Number:
Japanese Patent JP5209573
Kind Code:
B2
Abstract:
Two stage oxidation process for the production of aromatic dicarboxylic acids comprising
(1) oxydizing paraxylene at a temperature of 150 to 180°C and about 50 to 189 psia in the presence of an oxygen containing gas, an oxidation catalyst and aqueous acetic acid solvent in a first pressurized oxidation reactor to produce a benzenedicarboxylic acid product;
(2) removing the benzenedicarboxylic acid product from the first pressurized oxidation reactor and feeding said product of step (1) to a second oxidation reactor;
(3) further liquid phase oxidizing in said second oxidation reactor said benezenedicarboxyclic acid product while feeding to said second oxidation reactor a vapour phase solvent comprising partially dewatered acetic acid.
Inventors:
Ronald Bufford, Shepherd
Sumner, Charles Edwan Jr.
Tenant, Brent Align
Sumner, Charles Edwan Jr.
Tenant, Brent Align
Application Number:
JP2009154294A
Publication Date:
June 12, 2013
Filing Date:
June 29, 2009
Export Citation:
Assignee:
Grupo Petro Temex, Sociedad Anonima de Capital Bariabure
International Classes:
C07C51/265; C07B61/00; C07C63/26
Domestic Patent References:
| JP57159739A | ||||
| JP45037967B1 |
Foreign References:
| US3064044 | ||||
| US3406196 | ||||
| GB1358520A | ||||
| GB983677A | ||||
| US4892970 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Yoshihiro Kobayashi
Satoshi Deno
Atsushi Ebiya
Takashi Ishida
Tetsuji Koga
Yoshihiro Kobayashi
Satoshi Deno
Atsushi Ebiya