Determination of the desulfurization scheme for copper-based catalysts
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The company plans to replace the copper-based arsenic removal agent and the palladium-based hydrogenation catalyst in the near future, but the removal plan provided by the manufacturer is quite vague； The question is: before the desulfidation process, must free copper be oxidized to copper oxide? ； It is unknown how much ferrous sulfide is adsorbed on the surfaces of these two catalysts; is it sufficient to water them when removing the catalyst? What precautions are necessary during the storage period after the spent catalyst has been unloaded?
What you mean is: before removing the agent, by gradually increasing the amount of air supplied, the free copper is oxidized to copper oxide; once all the nitrogen has been replaced by air and there is no temperature rise in the catalyst bed, it becomes safer to remove and store the waste arsenic-removal agent.
Free-floating copper-based catalysts must be properly passivated by air before they can be removed; otherwise, they may catch fire, which is very dangerous
Can the passivated waste copper-based arsenic-removal agent, once the risk of free copper oxidation is eliminated, be ensured not to catch fire again during storage?； Could ferrous sulfide generated during the production process also pose a danger?
Could you send me the plan for removing the arsenic removal agent? Thank you