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Why is recycled hydrogen used in the second-stage reaction of the pyg hydrogenation unit?

2016-11-22View Original

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1. Why is recycled hydrogen used in the second-stage reaction of the pyrolysis gasoline hydrogenation unit? And it’s not using new hydrogen? 2. What are the functions of recycled hydrogen?
Reply #22023-10-26
To my self from 16 years ago: circulating hydrogen is used to keep the catalyst in a sulfided state.
Reply #32023-10-26
The second stage of gasoline hydrogenation is primarily aimed at desulfurization; the hydrogen consumption is low, and the hydrogen present in the recycled hydrogen is sufficient to meet the needs, At the same time it also serves as recycled hydrogen

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Translated at 2026-07-20 22:57:28

Original: https://bbs.hcbbs.com/thread-1644219-1-1.html

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