초록 ▼

An improved process and apparatus are disclosed for fluidized catalytic cracking of hydrocarbons using a swirl type catalyst regenerator. Multiple, symmetrically spaced spent catalyst inlets are provided for addition of coked catalyst to the regenerator. Preferable a single catalyst outlet, for with

An improved process and apparatus are disclosed for fluidized catalytic cracking of hydrocarbons using a swirl type catalyst regenerator. Multiple, symmetrically spaced spent catalyst inlets are provided for addition of coked catalyst to the regenerator. Preferable a single catalyst outlet, for withdrawal of regenerated catalyst, is provided in the center of the regenerator. Use of multiple symmetrical inlets and a central catalyst outlet greatly reduce stagnant regions in the bed.

대표청구항 ▼

A process for the fluidized catalytic cracking (FCC) of a hydrocarbon by contact of a crackable hydrocarbon with a source of regenerated FCC catalyst in a cracking reactor to produce catalytically cracked products and coked FCC catalyst which is regenerated in a swirl regenerator which maintains a c

A process for the fluidized catalytic cracking (FCC) of a hydrocarbon by contact of a crackable hydrocarbon with a source of regenerated FCC catalyst in a cracking reactor to produce catalytically cracked products and coked FCC catalyst which is regenerated in a swirl regenerator which maintains a catalyst inventory of at least 100 tons of catalyst as a dense phase, bubbling fluidized bed of catalyst having a depth of at least 8 feet within a regenerator vessel having sides and a diameter of at least 10 feet, and wherein said bubbling dense phase bed moves in a swirling direction within said regenerator due to tangential additional of coked cracking catalyst via at least two symmetrically placed coked catalyst inlets on the sides of said regenerator having an inlet diameter of at least 1 foot, said inlets tangentially discharging said coked catalyst into said catalyst bed in the same radial direction and said coked catalyst is regenerated in said dense bed by contact with an upflowing supply of oxygen or an oxygen containing gas to produce regenerated catalyst which is withdrawn from said catalyst bed via a catalyst outlet which is radially displaced from said catalyst inlets.