RDS residue hydrogenation
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Why is nitrogen purging carried out only when the reactor temperature and the inlet temperature of the heat high separator exceed 93°C during the shutdown and catalyst replacement process for residue oil?
It seems that hydrogen dissolved in the wall of the vessel at 93°C can be released to the greatest extent
The hydrogen release during the constant-temperature stage should be nearly complete by now. Does it really have to be reduced to this temperature?