Depth hydrogenation treatment method of faulty gasoline

A low-quality gasoline, deep hydrogenation technology, applied in the fields of hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc., can solve the problems of increasing hydrogen consumption, octane number loss, etc., achieve high desulfurization activity and selectivity, and simplify operation process, to avoid the effect of high hydrogen consumption

Active Publication Date: 2006-01-11
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

If conventional hydrotreating catalysts are used to remove diolefins, the olefins will also have more saturation reactions, which will increase the consumption of hydrogen and have a greater adverse effect on the subsequent upgrading reactions of olefins, and the loss of octane number of products will be relatively large. Big

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0015] The preparation method of the hydrodesulfurization catalyst is any conventional impregnation method. The oxide can be impregnated step by step, preferably co-impregnation; the impregnating solution can be impregnated with an equal amount of adsorption or excessive impregnation of the impregnating solution.

[0016] The aromatization and hydrodesulfurization provided by the present invention are carried out in the same high-temperature reactor. The reaction pressure is generally 1.5MPa~4.5MPa, the reaction temperature is generally 360℃~460℃, and the total volumetric space velocity is generally 1.0h -1 ~5.0h -1 The hydrogen-to-oil volume ratio is generally 200:1~1000:1; the reaction pressure is preferably 2.5MPa~3.5MPa, the reaction temperature is preferably 380℃~420℃, and the total volumetric space velocity is preferably 2.0h -1 ~4.0h -1 , The volume ratio of hydrogen to oil is preferably 500-700:1.

[0017] Because the temperature of the product at the outlet of the second-...

example 1

[0020] This example is a combined process of selective hydrorefining / upgrading (aromatization) and hydrodesulfurization.

[0021] The test was carried out on a device with two reactors connected in series, the first reactor was equipped with MoO 3(12.0wt%)-CoO(4.5wt%) / Al 2 O 3 Selective hydrofining catalyst; a La is charged in the second reactor 2 O 3 -NiO-ZnO / HZSM-5+HBeta aromatization catalyst, the catalyst La 2 O 3 1.0wt%, NiO is 2.6wt%, ZnO is 1.5wt%, HZSM-5 grain size is 20nm~80nm (SiO 2 / Al 2 O 3 The molar ratio 27) is 35wt%, and the HBeta grain size is 80nm~150nm (SiO 2 / Al 2 O 3 The molar ratio 33) content is 40% by weight. Hydrodesulfurization catalyst is MoO 3 (3.0wt%)-CoO(1.0wt%)-ZnO(1.0wt%) / alumina. The volume ratio of aromatization catalyst to hydrodesulfurization catalyst is 15:1. First, the catalyst is pre-sulfided. The sulfurized oil is straight-run gasoline and the sulfurizing agent is CS 2 , CS 2 The concentration is 1.0v%; the vulcanization pressure is 2.0MPa; t...

Embodiment 2

[0025] Change the hydrodesulfurization catalyst in Example 1 to MoO 3 (4.0wt%)-CoO(1.0wt%)-CuO(1.0wt%) / alumina catalyst, the volume ratio of the aromatization upgrading catalyst is 20:1, and the average temperature of the second reactor is 400℃, Others are the same as in Example 1. The specific results of the reaction for 500 hours are shown in Table 2.

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Abstract

A process for deeply hydrorefining poor-quality gasoline includes such steps as removing biolefine from FCC full-fraction gasoline at lower temp, and modifying (arylisomerizing) and hydrodesulfurizing at higher temp. The hydrodesulfarizing catalyst is the hydrorefining catalyst containing copper oxide and/or zinc oxide.

Description

Technical field [0001] The invention relates to a deep hydrotreating method for inferior gasoline with high sulfur content and high olefin content, in particular to a combined process for deep desulfurization, upgrading and olefin reduction of catalytic cracked gasoline. Background technique [0002] People are paying more and more attention to air pollution caused by automobile exhaust. Reducing the sulfur and olefin content in gasoline can greatly reduce the volatile organic compounds (VOCs) and nitrogen oxides (NO X ), emissions of harmful substances such as sulfur dioxide. Therefore, countries all over the world have formulated their own new standards for clean gasoline marked by low sulfur and low olefins. For example, the European IV vehicle exhaust standard requires that the sulfur content of European clean gasoline after 2005 is not more than 50μg / g, and the olefin content is 14v%-18v%; the US USEPA Tier2 standard stipulates that the sulfur content of clean gasoline in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/06
Inventor 赵乐平胡永康方向晨庞宏李扬王祥生
Owner CHINA PETROLEUM & CHEM CORP
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