METHOD OF REGENERATING CATALYST

WIPO Patent Application WO/2005/018805

A1

Catalyst particles are efficiently separated from particles substantially inactive in a reaction and the catalyst particles are optionally separated into groups of different kinds to thereby enable the efficient regeneration of the catalyst. A solid catalyst ingredient which has deteriorated in a reaction is regenerated via a discharge step in which a catalyst-containing ingredient containing the solid catalyst ingredient is discharged from a fixed-bed reactor. When the solid catalyst ingredient comprises two or more components of different shapes, a catalyst component separation step for separating the solid catalyst components from each other is conducted after the discharge step, and the solid catalyst components are then regenerated. When the catalyst-containing ingredient contains an inactive ingredient, an inactive-ingredient separation step for separating the inactive ingredient is conducted after the discharge step, and the solid catalyst ingredient is then regenerated.

NAKAMURA HIROYA (JP)
TAZAWA KAZUHARU (JP)
TESHIGAHARA ISAO (JP)

PCT/JP2004/011968

March 03, 2005

August 20, 2004

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MITSUBISHI CHEM CORP (JP)
NAKAMURA HIROYA (JP)
TAZAWA KAZUHARU (JP)
TESHIGAHARA ISAO (JP)

B01J23/94; B01J38/00; B01J38/72; C07C45/32; C07C51/25; (IPC1-7): B01J23/88; B01J38/00; C07C45/32; C07C47/22; C07C51/235; C07C57/055

JP3020004B2	2000-03-15
JP2002338543A	2002-11-27
JP2003048870A	2003-02-21
JP2003290665A	2003-10-14

Kamada, Bunji (Nipponbashi 1-chome Chuo-k, Osaka-shi Osaka 73, JP)

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