Upflow reactor system with layered catalyst bed for hydrotreating heavy feedstocks

Abstract

A reactor system and process for hydrotreating a heavy feedstock contaminated with metals sulfur and carbon residue using an upflow fixed bed reactor with at least two catalyst layers having different hydrogenation activity.

Description

technical field [0001] The present invention relates to a reactor system and process for the hydroprocessing of heavy feedstocks, especially residues, to reduce the amount of contaminants, especially metals, carbonaceous residues and sulfur. The upflow fixed bed reactor has a layered catalyst bed, in which the catalysts in different layers have different hydrogenation activities, which are used to selectively remove pollutants passing through the entire catalyst bed to prevent clogging and improve catalyst efficiency. life. Background technique [0002] Hydrotreating is a familiar process used to remove contaminants and upgrade heavy feedstocks prior to other processing. The term "hydroprocessing" as used in the present invention means a process for the removal of pollutants, especially metals, carbonaceous residues, nitrogen and sulfur, from heavy feedstocks at superatmospheric pressure and elevated temperature in the presence of hydrogen and a catalyst. As used herein, t...

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Problems solved by technology

Because of the high investment in the high-pressure port in the reactor, the total investment of such a system is greatly increased

Moreover, the operation of such a system is complex and tedious compared to other processes

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