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- W47800474 abstract "Worldwide hydroprocessing capacity and hydroprocessing catalyst usage has been increasing dramatically. Two major factors contributing to the increase are sulfur restrictions in gasoline, diesel and other fuels; and increasing demand for lighter products. The limit of 0.05 wt% sulfur for diesel fuels in US has led to the construction of many {open_quotes}low-sulfur diesel{close_quotes} hydrotreaters. Similarly strict sulfur restrictions have been imposed or considered in countries throughout Europe. These restrictions have also resulted in higher severity operation and shorter cycles in existing hydrotreating units. New catalyst regeneration technology is available for hydroprocessing catalysts of various sizes. These catalysts can be regenerated in a single pass, even at carbon levels above 30%. Regenerated carbon and sulfur levels are typically well below 1%, and nearly 100% recovery of the available surface area and catalyst length are achieved. The use of an inert gas stripper to remove excess hydrocarbons and water has also been successfully demonstrated. Pre-treating the catalyst in the stripper prior to regeneration has eliminated the potential for temperature excursions. Catalysts containing up to 40% volatile matter are now regenerated in a single pass by first pre-treating the catalyst in the stripper." @default.
- W47800474 created "2016-06-24" @default.
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- W47800474 date "1997-05-01" @default.
- W47800474 modified "2023-09-27" @default.
- W47800474 title "Regeneration technology helps reduce catalyst costs and waste disposal" @default.
- W47800474 hasPublicationYear "1997" @default.
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