Document Type and Number:
Japanese Patent JPS6121217
Kind Code:
B2
Abstract:
In an apparatus for oxidizing an alkyl-substituted aromatic compound in the liquid phase with a molecular oxygen-containing gas in a lower aliphatic carboxylic acid solvent in the presence of an oxidation catalyst, said apparatus comprising a reaction vessel, a gas exhaust port at the top of the vessel, an inlet at the bottom of the vessel for feeding said molecular oxygen-containing gas, an inlet for feeding said solvent, an inlet for feeding said catalyst, an inlet for feeding said alkyl-substituted aromatic compound, an outlet for withdrawing the oxidation reaction product, and an agitator within the vessel, said agitator consisting of a rotating shaft provided along the axial direction of the vessel and a plurality of stages of agitating blades secured to said rotating shaft at spaced intervals; the improvement wherein at least one stage of agitating blades consists of comb-like flat blades each of which is composed of a plurality of comb tooth-like pieces aligned at spaced intervals.
Inventors:
SHIRAKI SHIGEMI
YAMAMOTO RYOICHI
YAMAMOTO RYOICHI
Application Number:
JP1533578A
Publication Date:
May 26, 1986
Filing Date:
February 15, 1978
Export Citation:
Assignee:
MITSUI PETROCHEMICAL IND
International Classes:
C07C63/26; B01F3/04; B01F7/18; B01J14/00; B01J19/00; B01J19/18; B01J31/00; C07C51/00; C07C51/265; C07C67/00; B01F7/00; B01F15/00