Reasons for the increased pressure drop in the pre-hydrogenation bed during reforming
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Are they reactions and impurities? Specifically?
The oxygen content in the feedstock has not been completely removed, there are iron filings in the pipes, and catalyst carbonization can also affect the pressure drop across the bed.
The properties of the oil are quite important; oils with high density have a greater impact. Our straight-run naphtha was once contaminated by crude oil, which caused the catalyst bed to become completely clogged, and the pressure difference rose to its maximum level within just a few days
There are many reasons, such as an increase in feed volume, coking of the pre-hydrogenation catalyst, and impurities in the feed