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what happens if the hydrogen is lower than the target value during the Sulfiding Procedure of Hydroprocessing catalyts? And what if it is upper?
Answer:
High purity of hydrogen gas means fast reactions of sulfiding and more water is produced in the boot as a result sulfiding will be completed in less time. But during high-purity gas, H2S should remain sufficiently high as recommended otherwise catalyst reduction reactions may proceed.
Low-purity hydrogen gas will slow the sulfiding reactions. -
Therefore, it is better to take Hydrogen or makeup gas from high purity source. Pressure Swing Adsorption (PSA) unit or direst from Platforming unit can be the possible sources with more than 90 %, hydrogen purity.
For further details of Sulfiding please view the blog ” https:/sulfiding-hydrotreating-catalysts/”
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