Why is the temperature increased first and then the oxygen content when regenerating a pre-hydrogenation catalyst?
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The regeneration process must strictly follow the principle of increasing temperature first and then oxygen content, and decreasing oxygen content first before increasing temperature; it is absolutely not allowed to carry out these actions simultaneously. Why?
A high oxygen content leads to more thorough burning, and the temperature continues to rise.
I haven’t experienced the actual process myself, but I have seen devices get burned on the outside; temperature control is extremely strict in such cases. The regeneration operation inside the reactor primarily involves controlling the oxygen content, in order to prevent excessive oxygen levels from causing a rise in the temperature of the bed. If both of these parameters increase, it increases the likelihood of such a temperature rise further.
First, the temperature must be controlled and stabilized at the target value before adding oxygen; only then can the temperature rise be determined, and the degree of charring can be controlled to ensure safety
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