Title:
REGENERATING METHOD OF CATALYST
Document Type and Number:
Japanese Patent JPH08294635
Kind Code:
A
Abstract:
PURPOSE: To provide a method for generating a catalyst composed of a composite oxide constituted of vanadium and phosphorus (V-P-O based catalyst).
CONSTITUTION: A regenerating method of a catalyst composed of a composite oxide constituted of vanadium and phosphorus is used in the process of oxidizing 4C hydrocarbon and preparing maleic anhydride. Catalytic particles are extracted from a reactor, and high speed gas flow is jetted toward the catalytic particles to form a jet layer of catalytic particles. Collisions between the catalytic particles are thereby generated, and inactive layers on the surfaces of catalytic particles are ground and removed in the regenerating method.
Inventors:
ICHIKI TATSUMI
HAMASHIMA NAGATAKA
NAKAMURA TEIJI
HAMASHIMA NAGATAKA
NAKAMURA TEIJI
Application Number:
JP12706795A
Publication Date:
November 12, 1996
Filing Date:
April 27, 1995
Export Citation:
Assignee:
LONZA SPA (IT)
TONEN SEKIYUKAGAKU KK
TONEN SEKIYUKAGAKU KK
International Classes:
C07D307/60; B01J27/198; B01J27/28; B01J38/00; C07B61/00; (IPC1-7): B01J38/00; B01J27/198; B01J27/28; C07D307/60
Attorney, Agent or Firm:
Mitsuo Matsui