Method of heavily desulfurating and reducing olefinic hydrocarbon for gasoline

A deep desulfurization and gasoline technology, which is applied in the treatment of hydrocarbon oil, petroleum industry, refined hydrocarbon oil, etc., and can solve the problem of large octane number loss and other problems

Inactive Publication Date: 2004-01-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if domestic FCC gasoline is hydrodesulfurized using the above-mentioned existing technology, the olefin saturation is too much, resulting in a large loss of octane number.

Method used

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  • Method of heavily desulfurating and reducing olefinic hydrocarbon for gasoline

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Compared with the comparative example, in the case of the same raw materials, the heavy gasoline fraction and hydrogen are sequentially contacted with the catalyst CH-18 and RIDOS-1 for hydrotreating and octane recovery. The hydrogenated heavy gasoline fraction is blended with the sweetened light gasoline fraction to obtain a gasoline product. The process conditions and product properties are shown in Table 2. It can be seen from Table 2 that the sulfur content of the heavy gasoline fraction is 9ppm, the olefin content is 18.2v%, and the antiknock index has increased by 0.2 units.

Embodiment 2

[0038] Using FCC gasoline B as the raw material, the raw material is first cut, the cutting point is 88°C, and the heavy gasoline fraction accounts for 69.8% by weight of the raw material, and its properties are shown in Table 1. The heavy gasoline fraction and hydrogen are sequentially contacted with catalysts CH-18 and RIDOS-1 for hydrotreating and octane recovery. The hydrogenated heavy gasoline fraction is blended with the sweetened light gasoline fraction to obtain gasoline products. The hydrogenation process conditions and product properties are shown in Table 3. It can be seen from Table 3 that the sulfur content of the heavy gasoline fraction is 161ppm, the olefin content is 16.9v%, and the antiknock index has increased by 1.2 units.

Embodiment 3

[0040] Using FCC gasoline C as the raw material, the raw material is first cut, the cutting point is 95°C, and the heavy gasoline fraction accounts for 60.1% by weight of the raw material, and its properties are shown in Table 1. The heavy gasoline fraction and hydrogen are sequentially contacted with catalysts CH-18 and RIDOS-1 for hydrotreating and octane recovery. The hydrogenated heavy gasoline fraction is blended with the sweetened light gasoline fraction to obtain gasoline products. The hydrogenation process conditions and product properties are shown in Table 3. It can be seen from Table 3 that the sulfur content of the heavy gasoline fraction is 100ppm, the olefin content is 19.8v%, and the antiknock index loss is only 0.6 units.

[0041] raw material A

[0042] comparative example

[0043] Example 2

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Abstract

The method for further desulfurization and reducing olefine content in the gasoline includes the following steps: cutting the gasoline raw material into light fraction and heavy fraction, making the light fraction undergo the processes of alkali refinement treatment and removing mercaptans, and making the heavy fraction and hydrogen gas successively contact with hydrogenation refining catalyst and octane value restoring agent, then mixing the above-mentioned desulfurized light fraction and heavy fraction so as to obtain the invented gasoline product in which the sulfur content is less than 200 ppm and olefine content is less than 20 V%.

Description

technical field [0001] The invention belongs to a method for refining hydrocarbon oil in the presence of hydrogen, more specifically, it belongs to a method for hydrodesulfurizing and reducing olefins of a gasoline fraction. Background technique [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 for 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. Comparing with the new standard of motor gasoline in my country and the Class II gasoline index of "World Fuel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/00C10G45/02
CPCC10G45/12C10G2300/1048C10G2300/202
Inventor 李大东石玉林胡云剑习远兵李明丰石亚华
Owner CHINA PETROLEUM & CHEM CORP
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