A minor doubt regarding catalyst activation and sulfidation
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When activating and sulfiding the catalysts in our factory, nitrogen is used to raise the temperature to a certain level first, after which hydrogen is used to continue raising the temperature. What is the purpose of doing this? Why not use hydrogen directly for heating?
First, dry the catalyst that has just been loaded into the reactor using nitrogen; raising the temperature of the nitrogen to a certain level has little effect on the catalyst, while hydrogen has a specific hydrogen reduction temperature. 175-180 degrees; temperatures above this range can easily cause permanent reduction and deactivation of the catalyst