Method for reducing gasoline sulfur content

A sulfur content, gasoline technology, applied in the petroleum industry, processing hydrocarbon oil, hydrocarbon oil treatment products, etc., can solve the problems of large octane number loss, increase in octane number loss, and increase in the proportion of heavy gasoline, and achieve octane The effects of small loss value, reduced energy consumption and operating costs, and increased effective utilization
CN108018079AActive Publication Date: 2018-05-11CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2018-05-11

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Abstract

Relating to the field of hydrocarbon oil refining, the invention discloses a method for reducing the gasoline sulfur content. The method includes: fractionating a gasoline raw material into light fraction gasoline, medium fraction gasoline and heavy fraction gasoline, letting the light fraction gasoline firstly enter an alkaline extraction unit for removal of mercaptan, then mixing the mercaptan removed light fraction gasoline with medium gasoline fraction, and letting the mixture enter a solvent extraction unit; or letting the medium gasoline fraction firstly enter the solvent extraction unit, then mixing the obtained product and the light gasoline fraction, and subjecting the mixture to the alkaline extraction unit; letting the extract oil obtained by the solvent extraction unit and theheavy fraction gasoline enter a first reaction zone and a second reaction zone in order, and separating the reaction effluent of the second reaction zone to obtain hydrogenated heavy fraction gasoline; and mixing the treated light gasoline fraction and the medium gasoline fraction with the hydrogenated heavy fraction gasoline so as to obtain a gasoline product. The gasoline product obtained by themethod provided by the invention has the advantages of low sulfur content, small octane loss value and high gasoline yield.
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Description

technical field

[0001] The invention relates to the field of refined hydrocarbon oil, in particular to a method for reducing the sulfur content of gasoline, and more specifically to a method for reducing the sulfur content in high-sulfur and high-olefin gasoline raw materials to produce ultra-low sulfur gasoline. Background technique

[0002] With the rapid increase of the number of automobiles in our country, the problem of air pollution caused by automobile exhaust emissions is becoming more and more serious.

[0003] The pollutants emitted by automobile exhaust mainly include SOx and NOx. Such pollutants will not only cause acid rain, but also destroy the ozone layer, and NOx can also cause cancer in the human body, causing great harm to humans and the environment. Sulfur in gasoline can poison automobile exhaust gas purification catalysts, seriously affecting its ability to treat exhaust pollutants. Therefore, countries all over the world have formulated more and more ...

Claims

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