Method for deep desulfurization olefin hydrocarbon reduction of inferior gasoline

A technology for deep desulfurization and inferior gasoline, applied in refining to remove heteroatoms, etc., can solve the problems of inability to deal with olefin content, total sulfur content cannot be lower than 50μg/g, large loss of octane number, etc.

Active Publication Date: 2009-07-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are problems such as low liquid yield and waste lye treatment in this method.
[0008] For FCC gasoline with high olefin content and low aromatic content, when the existing hydrogenation technology is used for treatment, the olefin saturation rate is high, resulting in a large loss of octane number
Using the above method of cutting gasoline raw materials into light and heavy fractions, the light fraction is

Method used

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  • Method for deep desulfurization olefin hydrocarbon reduction of inferior gasoline

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Compared with the comparative example, under the condition of the same raw materials, the gasoline fraction and hydrogen are contacted with the dual-function catalyst of hydrogenation adsorption and olefin aromatization to carry out hydrodesulfurization reaction and olefin aromatization reaction. Process conditions and product properties are shown in Table 3. It can be seen from Table 3 that the sulfur content of the gasoline fraction is 48 μg / g, the olefin content is 19.6v%, and the antiknock index (RON+MON) / 2 has decreased by 0.5 units.

Embodiment 2

[0035] Using FCC gasoline B as raw material, the gasoline fraction and hydrogen are contacted with the dual-function catalyst of hydrogenation adsorption and olefin aromatization to carry out hydrodesulfurization reaction and olefin aromatization reaction. Process conditions and product properties are shown in Table 3. It can be seen from Table 3 that the sulfur content of the gasoline fraction is 23 μg / g, the olefin content is 19.8v%, and the antiknock index (RON+MON) / 2 is reduced by 0.8 units.

Embodiment 3

[0037] Using FCC gasoline C as the raw material, the gasoline fraction and hydrogen are contacted with the dual-function catalyst of hydrogenation adsorption and olefin aromatization to carry out hydrodesulfurization reaction and olefin aromatization reaction. Process conditions and product properties are shown in Table 3. As can be seen from Table 3, the gasoline fraction has a sulfur content of 6 μg / g, an olefin content of 19.9 v%, and an antiknock index (RON+MON) / 2 decreased by 0.8 units.

[0038] Table 1 Catalyst weight percent composition

[0039] catalyst

A

B

C

D

Zinc oxide

82

70

20

40

Aluminum oxide

12

10

5

5

Silicon oxide

/

/

5

10

Nickel oxide

/

/

30

20

cobalt oxide

6

5

/

/

Tungsten Oxide

/

/

/

5

Molybdenum oxide

/

/

5

/ ...

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Abstract

The invention discloses a gasoline deep desulphurization and olefin reduction method, comprising that the gasoline raw material and hydrogen are contacted with hydrogenation absorption desulphurization and olefin aromatization difunctional catalyst to remove sulfur in the gasoline and reduce the olefin content in the gasoline product. The method of the invention can produce gasoline product with the sulfur content lower than 50 micrograms per gram, and can further produce gasoline product with the sulfur content lower than 10 micrograms per gram while the olefin content is lower than 20v%, and meanwhile the antiknock quality index loss is low. The method of the invention can be applied to deep desulphurization and olefin reduction process of FCC gasoline, catalytic pyrolysis gasoline, coker gasoline, pyrolysis gasoline and pressure gasoline or the mixed gasoline raw material thereof.

Description

technical field [0001] The invention belongs to a method for deeply desulfurizing and reducing olefins in gasoline, in particular to a method for producing high-quality gasoline by deeply desulfurizing and reducing olefins in inferior gasoline raw materials under the condition of hydrogen. technical background [0002] With the continuous enhancement of people's awareness of environmental protection, the emission of toxic and harmful substances in automobile exhaust will be strictly controlled, so the quality requirements of oil products used as engine fuels are becoming more and more stringent. For this reason, various countries have put forward extremely stringent restriction indicators on motor gasoline specifications such as oxygen content, vapor pressure, benzene content, total aromatics content, boiling point, olefin content and sulfur content, in order to reduce the emission of harmful substances. The main problem in comparing the quality of gasoline in my country is ...

Claims

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Application Information

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IPC IPC(8): C10G45/04
Inventor 李宝忠张忠清张英关明华
Owner CHINA PETROLEUM & CHEM CORP
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