Reformation cooling mode
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What is the cooling mode used in the catalyst regeneration section of continuous reforming? What is its purpose?
This post was last edited by libingtaoff8 on 2017-8-26 at 18:32. In the cooling mode, for reactors arranged side by side, catalyst circulation is carried out between Reactor 1 and Reactor 2 during shutdown to prevent uneven heating of the catalyst from damaging the components inside the reactors; nitrogen is used as the gas for this purpose. Catalyst circulation also takes place between Reactor 3 and Reactor 4, with nitrogen again being used as the gas! It’s generally not used in practical operations! If used, the carbon distribution in the catalyst will be disrupted, which can easily lead to excessive temperature rise in the regenerator during regeneration!
You mean the catalyst cold cycle, right?
Here, a chain reaction is triggered, and cold nitrogen is injected for protective cooling; this is what’s known as a regenerative hot shutdown, intended to prevent the catalyst bed from overheating and causing damage to the catalysts and equipment