Process Section – Daily Hydrogenation Process Knowledge Question No. 019
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What is the purpose of adding a passivator to the safety fluid when introducing it? Answer: Catalysts generally need to be passivated after sulfidation. Catalysts with high levels of sulfides after sulfidation exhibit very high activity, leading to intense reactions; especially when using raw materials of poor quality, this can easily result in overheating of the catalyst bed. Moreover, it is likely that the catalyst bed has coked, increasing pressure drop and reducing activity.
After sulfidation, catalysts with high levels of sulfides exhibit very high activity, leading to intense reactions; especially when using raw materials of poor quality, this can easily result in overheating of the catalyst bed. Moreover, it is likely that the catalyst bed has coked, increasing pressure drop and reducing activity.
Catalysts generally need to be passivated after sulfidation. Catalysts with high levels of sulfides exhibit high activity after sulfidation, leading to intense reactions; especially when using raw materials of poor quality, this can easily result in overheating of the catalyst bed. Moreover, it is likely that the catalyst bed has coked, increasing pressure drop and reducing activity.
It transforms the metal surface into a state that is less susceptible to oxidation, thereby slowing down the rate of metal corrosion
Catalysts generally need to be passivated after sulfidation. Catalysts with high levels of sulfides exhibit high activity after sulfidation, leading to intense reactions; especially when using raw materials of poor quality, this can easily result in overheating of the catalyst bed. Moreover, it is likely that the catalyst bed has coked, increasing pressure drop and reducing activity.
Answer: Catalysts generally need to be passivated after sulfidation. Catalysts with high levels of sulfides after sulfidation exhibit very high activity, leading to intense reactions; especially when using raw materials of poor quality, this can easily result in overheating of the catalyst bed. Moreover, it is likely that the catalyst bed has coked, increasing pressure drop and reducing activity.
Catalysts generally need to be passivated after sulfidation. Catalysts with high levels of sulfides exhibit high activity after sulfidation, leading to intense reactions; especially when using raw materials of poor quality, this can easily result in overheating of the catalyst bed. Moreover, it is likely that the catalyst bed has coked, increasing pressure drop and reducing activity.
Heavy metals such as nickel and vanadium in the passivation materials prevent catalyst poisoning caused by the deposition of these metals on the catalyst surface.
Passivation, to prevent reactions with the equipment as well as to ensure safety
Catalysts generally need to be passivated after sulfidation. Catalysts with high levels of sulfides exhibit high activity after sulfidation, leading to intense reactions; especially when using raw materials of poor quality, this can easily result in overheating of the catalyst bed. Moreover, it is likely that the catalyst bed has coked, increasing pressure drop and reducing activity.