Process for reducing content of sulphur compounds and poly-aromatic hydrocarbons in a hydrocarbon feed

a technology of polyaromatic hydrocarbons and hydrocarbon feeds, which is applied in the direction of physical/chemical process catalysts, metal/metal-oxide/metal-hydroxide catalysts, fuels, etc., can solve the problems of increasing the catalyst's coke-making propensity, reducing the yield of valuable products, and high costs
US20010013484A1Inactive Publication Date: 2001-08-16HALDOR TOPSOE AS
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
HALDOR TOPSOE AS
Publication Date
2001-08-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

A process for reducing content of sulphur compounds and polyaromatic hydrocarbons in a hydrocarbon feed having a boiling range between 200° C. and 600° C., which process comprises in combination contacting the feed and hydrogen over a hydrotreating catalyst and hydrotreating feed at hydrotreating conditions, cooling the hydrotreated effluent and hydrogen-rich gas from the hydrotreating reactor contacting said effluent and hydrogen gas over a hydrotreating catalyst in a post-pretreatment reactor at a temperature sufficient to lower the polyaromatic hydrocarbon content.
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Description

[0001] The present invention relates to a process for removal of sulphur and polyaromatic compounds in vacuum gas oil by hydrotreatment of FCC hydrocarbon feed stock.

[0002] Many countries are tightening specifications for the sulphur content in diesel and gasoline fuels. The fluid catalytic cracking (FCC) units are a major source of gasoline, but also the major source of sulphur in gasoline and diesel fuels. Lower sulphur content in fuel requests either treating the FCC feed or treating its products.

[0003] Treating the FCC products involves multiple process solutions: naphtha treating, light-cycle oil (LCO) treating and flue gas treating to control the SO.sub.x emissions. Treating feed to the FCC unit can increase yields and at the same time lower sulphur levels in gasoline, and diesel fuels and reduces SO.sub.x emissions. The increased conversion in the FCC unit resulting from feed treatment may improve refinery margins. Product treatment, however, offers no yield benefits.

[0004] I...

Claims

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