Title:
触媒選択性を向上させる触媒再生方法
Document Type and Number:
Japanese Patent JP5537220
Kind Code:
B2
Abstract:
The object of the present invention is to provide a catalyst regeneration process which can improve catalyst selectivity. A first aspect of the invention is characterized in that a spent catalyst from a reactor is introduced into a first fluidized bed regenerator and contacted with an oxygen-containing gas stream and optional steam to carry out a coke combustion reaction, wherein the resultant mixture of the partially regenerated catalyst and flue gas is introduced into a second fluidized bed regenerator and contacted with steam and an optional oxygen-containing gas stream to carry out a further regeneration reaction, and then the regenerated catalyst is introduced into the reactor. A second aspect of the invention is characterized in that a spent catalyst from a reactor is introduced into a fluidized dense bed regenerator and contacted with an oxygen-containing gas stream and steam to carry out a coke combustion reaction, and then the regenerated catalyst is introduced into the reactor. The inventive processes result in a more uniform distribution of the regenerated catalyst activity; due to the exposure of the catalyst to a low temperature for a long time, a part of the heavy metals are buried by the matrix and the remaining are passivated. Thereby dry gas and coke yields decrease sharply when hydrocarbons are subjected to a catalytic cracking reaction on the regenerated catalyst.
More Like This:
Inventors:
Good friendship
Choi guardian
Zhanggang
Lu Weimin
Choi guardian
Zhanggang
Lu Weimin
Application Number:
JP2010077451A
Publication Date:
July 02, 2014
Filing Date:
March 30, 2010
Export Citation:
Assignee:
China Petrochemical Co. Ltd.
China Petrochemical Co., Ltd. Petrochemical Science Institute
China Petrochemical Co., Ltd. Petrochemical Science Institute
International Classes:
B01J38/34; B01J29/90; C10G11/18
Domestic Patent References:
| JP1266856A | ||||
| JP5212298A | ||||
| JP58133832A | ||||
| JP2010535865A | ||||
| JP50010802A | ||||
| JP1293137A |
Foreign References:
| CN101362959A | ||||
| US5077251 |
Attorney, Agent or Firm:
Harakenzo world patent & trademark