Hydrogenation and refining method of gasoline with poor quality

A technology for hydrorefining and low-quality gasoline, which is applied in the fields of hydrotreating process, petroleum industry, and hydrocarbon oil treatment, and can solve problems such as difficult operation, complicated process, high investment cost and operating cost

Active Publication Date: 2009-12-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can obtain products such as benzene, toluene, xylene and heavy naphtha, but the pro

Method used

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  • Hydrogenation and refining method of gasoline with poor quality

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Comparison scheme
Effect test

Embodiment 1

[0029] A kind of coker gasoline is used as raw material oil, and the properties of the raw material oil are shown in Table 1. It can be seen from Table 1 that the diene value of the raw material oil is 3.5gI / 100g, the actual colloid is 12mg / 100ml, and the silicon content is 1.0μg / g. The sulfur content is as high as 6000μg / g, which is an inferior gasoline fraction.

[0030] The feedstock oil is mixed with circulating hydrogen and enters the hydrogenation protection reactor, where it contacts hydrogenation protection agent I, hydrogenation protection agent II and hydrogenation protection agent III for reaction, wherein hydrogenation protection agent I, hydrogenation protection agent II and hydrogenation protection agent The filling volume ratio of the hydrogen protection agent III is 1:2:3, the outlet effluent of the hydrogenation protection reactor is mixed with the hydrocoking gasoline, and the ratio of the fresh raw material and the circulating oil is 1:1. The mixture directl...

Embodiment 2

[0039] A kind of coker gasoline is used as the raw material oil, and the properties of the raw material oil are shown in Table 4. From Table 4, it can be seen that the diene value of the raw material oil is 3.6gI / 100g, the actual colloid is 57mg / 100ml, and the silicon content is 6.0μg / g. The sulfur content is as high as 7800μg / g, which is an inferior gasoline fraction.

[0040] The feedstock oil is mixed with circulating hydrogen and enters the hydrogenation protection reactor, where it contacts hydrogenation protection agent I, hydrogenation protection agent II and hydrogenation protection agent III for reaction, wherein hydrogenation protection agent I, hydrogenation protection agent II and hydrogenation protection agent The filling volume ratio of the hydrogen protection agent III is 1:1:3, the outlet effluent of the hydrogenation protection reactor is mixed with the hydrocoking gasoline, and the ratio of the fresh raw material and the circulating oil is 2:1. The mixture di...

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Abstract

The invention discloses a hydrogenation and refining method of gasoline with poor quality, comprising the following steps: the base oil of gasoline contacts and reacts with hydrogenation protective agent at low temperature; after reaction effluent is mixed with circulation oil, the mixture sequentially contacts and reacts with hydrogenation desilication solvent and hyrorefining catalyst at high temperature; the reaction product is cooled and separated to obtain hydrogen-rich gas and refined gasoline fraction; and parts of refined gasoline fraction serves as circulation oil to return to the outlet of a first hydrogenation reaction area. The method can handle coker gasoline with high content of sulphur, nitrogen and olefin, and refined gasoline fraction can satisfy charging requirements of reforming pre-hydrogenation devices and steam cracking ethene preparing devices. The method of the invention can effectively slow coking speed of heating furnace tubes, greatly lowers pressure drop generation frequency of a main hydrogenation reactor, improves the operating severity of the main hydrogenation reactor and retards the deactivation speed of catalyst at the bottom of a refined reactor.

Description

technical field [0001] The present invention belongs to a method for refining hydrocarbon oil in the presence of hydrogen, more specifically, a method for hydrofinishing inferior gasoline. Background technique [0002] Delayed coking technology is one of the important deep processing methods of heavy oil in my country. In delayed coking products, coker gasoline fraction has high olefin content (bromine value is 60-80gBr / 100g), poor stability and low octane number (generally RON<60 ), should not be used as a blending component of gasoline. At present, there are four processing methods for coking gasoline: (1) coking gasoline is blended into diesel hydrogenation unit for processing, and after hydrofining with diesel oil, hydrocoking gasoline is fractionally distilled; (2) coking gasoline is mixed with straight-run gasoline Hydrofining; (3) Fractional distillation of hydrocoked gasoline after centralized hydrotreating of the whole distillate of coking; (4) Separate hydrofini...

Claims

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Application Information

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IPC IPC(8): C10G65/04
Inventor 何宗付高晓冬吴昊王哲陈若雷聂红褚阳田鹏程刘滨
Owner CHINA PETROLEUM & CHEM CORP
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