Naphtha hydroprocessing with mercaptan removal

a technology of mercaptan removal and hydroprocessing, which is applied in the field of hydroprocessing of naphtha with removal of mercaptan from product, can solve the problems of increased production costs of high octane fuels, loss of desirable molecules contributing to desirable octane, and further loss of desirable molecules contributing to high octan
US20050284794A1Inactive Publication Date: 2005-12-29EXXON RES & ENG CO
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
EXXON RES & ENG CO
Publication Date
2005-12-29
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

This invention relates to the hydroprocessing of naphtha with removal of mercaptan from product. Naphtha feedstock is hydrotreated and hydrocracked. Sulfur-containing contaminants, notably C5+ recombinant mercaptans, are then selectively removed from the hydrocracked naphtha by selective extraction or adsorption.
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Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims benefit of U.S. Provisional Patent Application Ser. No. 60 / 582,112 filed Jun. 23, 2004.FIELD OF THE INVENTION

[0002] This invention relates to the hydroprocessing of naphtha with removal of mercaptan from product. More particularly, naphtha feedstock is hydrotreated and hydrocracked. Sulfur-containing contaminants are then selectively removed from the naphtha. BACKGROUND OF THE INVENTION

[0003] Environmental regulations covering the sulfur content of fuels for internal combustion engines are becoming more stringent with regard to allowable sulfur in fuels. It is anticipated that motor gasoline sulfur content may need to meet a sulfur limit of 30 wppm by 2004 with possible further reductions mandated in the future. The feedstocks for motor gasoline are typically catalytically cracked naphthas that contain substantial amounts of sulfur and olefins.

[0004] A common method for reducing the sulfur content of feedstocks...

Claims

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