Selection of drying conditions for hydrogenation refining catalysts
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Dear sea friends, there’s a question I haven’t been able to figure out: why is the drying of hydrogenation refining catalysts carried out at constant temperatures of 120°C and 250°C? I hope my friends can provide an answer; thank you very much
One is the removal of free water (low temperature). One is dehydrated molecular water (structural water)
250℃ is probably the condition for thermally tightening pipeline valves
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