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Hydrogenation method for producing ultralow-sulfur gasoline

A technology of ultra-low sulfur and gasoline, which is applied in hydrotreating process, petroleum industry, and processing hydrocarbon oil, etc.

Active Publication Date: 2016-11-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that this method is only suitable for hydrodesulfurization and sweetening of gasoline with a sulfur content of less than 700 μg / g

Method used

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  • Hydrogenation method for producing ultralow-sulfur gasoline
  • Hydrogenation method for producing ultralow-sulfur gasoline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] The same raw material oil F1 as in Comparative Example 1 was used. The first hydrogenation reactor is filled with fresh catalyst C1, the second hydrogenation reactor is filled with fresh catalyst C2, and the third reactor is filled with fresh catalyst C3. Firstly, the catalysts C1, C2, and C3 in the reactor are sulfided. After the vulcanization is finished, adjust the gas in the reaction system to be the catalyst gas. In the catalyst gas, the volume fraction of hydrogen is 85%, and the sum of the volume fractions of hydrogen sulfide and carbon monoxide is 1.0%. The catalyst raw material is introduced into the reaction system, and The catalytic conditions are hydrogen partial pressure 1.6MPa, hydrogen oil ratio 100Nm 3 / m 3 , volume space velocity 4.0h -1 1. Under the condition of a reaction temperature of 330° C., the catalytic raw material is contacted with the catalyst for 72 hours, and the catalyst is selectively controlled and treated. The distillation range of ...

Embodiment 2

[0078] The same raw material oil F2 as in Comparative Example 2 was used. The feed oil F2 is first cut into a light gasoline fraction and a heavy gasoline fraction in the fractionation unit, wherein the proportion of the light gasoline fraction is 30% by weight, and the proportion of the heavy gasoline fraction is 70% by weight. Alkaline extraction sweetening of light gasoline fraction. Heavy gasoline fractions undergo selective hydrodesulfurization. Catalyst C1 is filled in the first hydrogenation reactor of the heavy gasoline hydrogenation unit; the catalyst combination C2 / C3 is filled in the second hydrogenation reactor, and the volume ratio of C2 and C3 in the reactor is C2:C3=80:20; The catalyst C3 is loaded in the third hydrogenation reactor. The catalyst in each reactor is sulfided. After the vulcanization finishes, adjust the gas in the reaction system to be the catalyzing gas, in the catalyzing gas, the volume fraction of hydrogen is 90%, the sum of the volume frac...

Embodiment 3

[0082] A kind of catalytic cracking gasoline is used as raw material oil F3. The feed oil F3 is first cut into light gasoline fraction and heavy gasoline fraction in fractionation unit, wherein the proportion of light gasoline fraction is 25% by weight, and the proportion of heavy gasoline fraction is 75% by weight. Alkaline extraction sweetening of light gasoline fraction. Heavy gasoline fractions undergo selective hydrodesulfurization. Catalyst C1 is filled in the first hydrogenation reactor of the heavy gasoline hydrogenation unit; the catalyst combination C2 / C3 is filled in the second hydrogenation reactor, and the volume ratio of C2 and C3 in the reactor is C2:C3=85:15; The catalyst combination C2 / C3 is loaded in the third hydrogenation reactor, and the volume ratio of C2 and C3 in the reactor is C2:C3=85:15. The catalyst in each reactor is sulfided. After the vulcanization finishes, adjust the gas in the reaction system to be the catalyzing gas, in the catalyzing gas,...

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Abstract

Provided is a hydrogenation method for producing ultralow-sulfur gasoline. After full-range gasoline and / or a heavy gasoline fraction and hydrogen are mixed, the mixture enters a first hydrogenation reactor to be in contact with a selective hydrogenation diene removal catalyst I for reacting, and effluent of the first hydrogenation reactor enters a second hydrogenation reactor and is in contact with a selective hydrogenation desulfurization catalyst II regulated and controlled selectively for reacting; effluent of the second hydrogenation reactor enters a third hydrogenation reactor after hydrogen sulfide is removed through a flash column and is in contact with a selective hydrogenation desulfurization catalyst III regulated and controlled selectively for reacting, and reaction effluent of the third hydrogenation reactor is separated to obtain an ultralow-sulfur hydrogenation gasoline fraction. High-sulfur high-olefin catalytically cracked gasoline can be treated, the sulphur content of the product is smaller than 10 micrograms / gram, the octane value loss is small, and the gasoline yield reaches 99% or above.

Description

technical field [0001] The invention relates to a method for refining hydrocarbon oil in the presence of hydrogen, in particular to a hydrogenation method for producing ultra-low sulfur gasoline. Background technique [0002] Air pollution is a serious environmental problem, and a large amount of engine emissions is one of the important causes of air pollution. In order to protect the environment, countries around the world have imposed increasingly strict restrictions on the composition of engine fuels in order to reduce the emission of harmful substances. Since the sulfur in gasoline will poison the automobile exhaust gas purification catalyst and seriously affect its ability to treat pollutants, the gasoline quality standards of various countries are particularly strict on the sulfur content. The European Union began to implement the Euro V emission standard in 2009, requiring the sulfur content of gasoline to be less than 10 μg / g, and plans to implement a more stringent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02
Inventor 屈锦华张登前高晓冬牛传峰习远兵褚阳田鹏程李明丰李大东
Owner CHINA PETROLEUM & CHEM CORP
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