| 摘要 |
<p>A process is disclosed for achieving turbulent or fast fluidized bed regeneration of spent FCC catalyst in a bubbling bed regenerator (24) having a stripper (8) mounted over the regenerator and a stripped catalyst standpipe (26) within the regenerator (24). A coke combustor vessel (50), which may be partially or totally open to the dilute phase above the bubbling bed (75), is added to the existing regenerator vessel. Spent catalyst is discharged into the coke combustor (50), regenerated in a turbulent or fast fluidized bed (55), then discharged into the dilute phase region above the bubbling bed (75). Regeneration of catalyst is completed in the bubbling dense bed (75), and/or an annular fast fluidized bed (155) surrounding the coke combustor (50). Catalyst may be recycled from the dense bed (75) to the coke combustor (50).</p> |
