A hydrogenation method for treating high-nitrogen and high-aromatic low-quality diesel feedstock

A low-quality diesel oil and high aromatics technology, applied in the field of hydrocarbon oil cracking, can solve the problem of low conversion rate
CN103773489BActive Publication Date: 2016-03-02CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2016-03-02

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Abstract

The invention discloses a hydrogenation method for treating high-nitrogen high-aromatic hydrocarbon inferior diesel oil raw materials. An integrated two-section process flow of a first reaction area, intermediate separation and a second reaction area is adopted. The method comprises the following steps: performing hydrodenitrogeneration and bicyclo- or multi-cyclo aromatic hydrocarbon hydrogenation saturation reactions on inferior diesel oil with high nitrogen and aromatic hydrocarbon content in the first reaction area, performing intermediate separation, obtaining a hydrogenated material flow in which the organic nitrogen content is less than 200 ug / g and the total aromatic hydrocarbon content is more than 60 weight percent, and providing the raw materials for the second reaction area; performing moderate refining and hydro-upgrading in the second reaction area, and performing fractionation to obtain gasoline components with high octane value. By adoption of the method provided in the invention, the inferior diesel oil fraction with high nitrogen and aromatic hydrocarbon content can be treated, and the gasoline components with high octane value and low sulfur content are obtained at high yield.
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Description

technical field

[0001] The present invention relates to a hydrocarbon oil cracking method for obtaining low-boiling fractions in the presence of hydrogen, more specifically, a hydrogenation method for processing high-nitrogen, high-aromatic inferior raw materials to produce high-octane gasoline components . Background technique

[0002] With the aggravation of heavy and inferior crude oil, the quality of FCC diesel is deteriorating and the output is increasing year by year. This part of FCC diesel accounts for about one third of my country's commercial diesel. Moreover, in order to extract more light oil products from crude oil, refineries continue to increase the processing capacity and processing depth of catalytic cracking units, resulting in further deterioration of the quality of catalytic cracking diesel. At the same time, environmental protection legislation is becoming stricter, the market requires the production of clean fuels as much as possible, and due to the in...

Claims

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