公开(公告)号：US20240033722A1

公开(公告)日：2024-02-01

申请号：US18257555

申请日：2021-12-16

Applicant: ERASTEEL

Inventor： Jean-Pierre DUFOUR

IPC: B01J38/24 ,  B01J38/02 ,  B01J27/051 ,  B01J21/04 ,  B01J23/883 ,  B01J23/882 ,  B01J23/887 ,  B01J27/30 ,  B01J23/94 ,  B01J19/00 ,  B01J19/18 ,  F27B7/36 ,  F27B7/12

CPC classification number: B01J38/24 ,  B01J38/02 ,  B01J27/051 ,  B01J21/04 ,  B01J23/883 ,  B01J23/882 ,  B01J23/8877 ,  B01J27/0515 ,  B01J27/30 ,  B01J23/94 ,  B01J19/0013 ,  B01J19/1812 ,  F27B7/36 ,  F27B7/12 ,  B01J2219/00132

Abstract: An industrial furnace and a method for roasting or regenerating spent petroleum catalysts. The furnace particularly includes a device to set the catalysts in motion along the bottom of the furnace to cause the catalysts to circulate from the inlet towards the outlet of the furnace; a first zone decarbonizing the spent catalysts to obtain decarbonized catalysts, followed by: a second zone including a plurality of oxygen feed devices distributed along the length of the second zone and placing the decarbonized catalysts in contact with the oxygen feed, the second zone desulfurizing the decarbonized catalysts to obtain roasted or regenerated catalysts.