| 摘要 |
A catalyst regeneration process and apparatus for the oxidative removal of coke from a coke-contaminated fluid catalyst. The process comprises of high temperature coke combustion zone, a lower temperature heat removal zone and an upper disengagement zone. Coke-contaminated catalyst, oxygen-containing gas and cooled regenerated catalyst from the heat removal zone are contacted in the high temperature combustion zone, the temperature of which is controlled by adjusting the rate at which catalyst is recycled to the heat removal zone. The heat removal zone contains a relatively dense-phase fluid catalyst bed in which is immersed heat removal means such as cooling coils. The level of this fluid catalyst bed, and thus the extent of immersion of the heat removal means in the bed, is maintained by controlling the quantity of regeneration gas passed into the transfer line that carries catalyst upward from the heat removal zone to the combustion zone.
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