A kind of hydrorefining method of coking gasoline

A technology for hydrorefining and coking gasoline, which is applied in refining to remove heteroatoms, etc., to achieve the effects of delaying coking speed, improving operation severity, and reducing the frequency of pressure drop generation.

Active Publication Date: 2011-12-21
CHINA PETROLEUM & CHEM CORP +2
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, this method is not suitable for low-quality gasoline fractions such as coker gasoline with high diene content and high gum content.

Method used

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  • A kind of hydrorefining method of coking gasoline
  • A kind of hydrorefining method of coking gasoline

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Experimental program
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Effect test

Embodiment

[0025] A kind of coker gasoline is used as raw material oil, and the properties of the raw material oil are shown in Table 1. From Table 1, it can be seen that the diene value of the raw material oil is 2.9gI / 100g, the actual colloid is 10mg / 100ml, and the sulfur content is as high as 6000μg / g, which is An inferior gasoline distillate. The feedstock oil is mixed with circulating hydrogen and enters the hydrogenation protection reactor, and then contacts the hydrogenation protection agent I and the hydrogenation protection agent II for reaction, wherein the filling volume ratio of the hydrogenation protection agent I and the hydrogenation protection agent II is 1:2 , the outlet effluent of the hydrogenation protection reactor directly enters the heating furnace to raise the temperature, and then enters the hydrogenation main reactor, and carries out the hydrofinishing reaction under the action of the hydrofinishing catalyst, and the reaction effluent enters the high-pressure sep...

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Abstract

A method for hydrogenation refining of coking gasoline. The raw material oil is mixed with hydrogen and enters the hydrogenation protection reactor to contact with the hydrogenation protection agent. The reaction is carried out under low temperature conditions. The reactor reacts with the hydrorefining catalyst under high temperature conditions, and the reaction product is cooled and separated to obtain hydrogen-rich gas and refined gasoline fraction. The olefin content in the refined gasoline fraction is less than 1% by volume, the sulfur content is less than 300 μg / g, and the nitrogen content is less than 2 μg / g, all of which can meet the feed requirements of reforming prehydrogenation units and steam cracking ethylene units. The method can effectively delay the coking speed of the furnace tube of the heating furnace, greatly reduce the pressure drop generation frequency of the hydrogenation main reactor, and can increase the operating severity of the hydrogenation main reactor.

Description

technical field [0001] The invention belongs to a method for refining hydrocarbon oil in the presence of hydrogen, more specifically, a method for hydrofining coker 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 hydrofining of coking g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/08
Inventor 何宗付王晓璐胡志海李继炳高晓冬余达荣杨清河陈波
Owner CHINA PETROLEUM & CHEM CORP
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