Catalyst presulfurization
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I would like to ask: if, during the constant-temperature phase at 300 degrees Celsius for the pre-sulfiding of the hydrogenation catalyst, the sulfur injection is interrupted for an extended period and the temperature drops to 200 degrees Celsius, what should be done regarding the temperature once sulfur injection resumes and pre-sulfiding needs to continue? Should the temperature be raised directly back to 300 degrees Celsius, or is it necessary to go through another constant-temperature phase while raising the temperature, just as at the beginning? ?
Connect it back where it was disconnected
Just connect it directly; we have encountered this situation before.
Resume from where it was interrupted~~~~; pay attention to temperature rise and sulfur injection rate~~~