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Catalytic conversion method used for raising gasoline octane number

A catalytic conversion method and gasoline octane number technology, applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve problems such as insufficient product distribution, low isobutene content, and insufficient utilization of petroleum resources

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing technology can obtain liquefied gas rich in isobutane and gasoline rich in isoparaffins, the processing of high-quality catalytic cracking feedstock oil, especially hydrogenated wax oil, results in low olefin content in gasoline, and the olefins in the liquefied gas The isobutene content is low, the product distribution is not optimized, and the petroleum resources are not fully utilized

Method used

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  • Catalytic conversion method used for raising gasoline octane number
  • Catalytic conversion method used for raising gasoline octane number
  • Catalytic conversion method used for raising gasoline octane number

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] This example illustrates the use of the method provided by the present invention and the use of catalysts with different activity levels to increase the isobutene content in liquefied gas and the olefin content in gasoline in a medium-sized variable-diameter riser reactor.

[0065] The total height of the pre-lift section, the first reaction zone, the second reaction zone and the outlet zone of the reactor is 15 meters, the diameter of the pre-lift section is 0.025 meters, and its height is 1.5 meters; the diameter of the first reaction zone is 0.025 meters, and its height It is 4 meters; the diameter of the second reaction zone is 0.1 meters, and its height is 6.5 meters; the diameter of the outlet zone is 0.025 meters, and its height is 3 meters; is 45°; the base angle of the isosceles trapezoid in the longitudinal section of the junction of the second reaction zone and the outlet zone is 60°.

[0066] The feed oil A listed in preheated table 1 enters the reactor, and...

Embodiment 2

[0072] This example illustrates the use of the method provided by the present invention and the use of catalysts with different activity levels to increase the isobutene content in liquefied gas and the olefin content in gasoline in a medium-sized variable-diameter riser reactor.

[0073] The total height of the pre-lift section, the first reaction zone, the second reaction zone and the outlet zone of the reactor is 15 meters, the diameter of the pre-lift section is 0.025 meters, and its height is 1.5 meters; the diameter of the first reaction zone is 0.025 meters, and its height It is 4 meters; the diameter of the second reaction zone is 0.1 meters, and its height is 6.5 meters; the diameter of the outlet zone is 0.025 meters, and its height is 3 meters; is 45°; the base angle of the isosceles trapezoid in the longitudinal section of the junction of the second reaction zone and the outlet zone is 60°.

[0074] The raw material oil A listed in the table 1 of preheating enters ...

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Abstract

The invention relates to a catalytic conversion method used for raising gasoline octane number, which is characterized in that high-quality raw oil and a low activity heat regenerated catalyst are contacted at the lower part of a reactor for cracking reaction, the generated oil gas and a catalyst containing carbon are moved upwards under a certain reaction environment for performing a selective hydrogen transfer reaction and an isomerization reaction, the reaction products are separated, the raw catalyst is stripped and regenerated for circular usage; diesel oil fraction in the reaction product is cut to a light diesel fuel fraction and a heavy diesel fuel fraction, the heavy diesel fuel fraction is individually performed hydrotreatment or / and performed hydrotreatment with a recycle oil fraction and an oil slurry fraction to obtain a hydrogenation heavy diesel fuel fraction, the hydrogenation heavy diesel fuel fraction is individually returned or / and returned with the light diesel fuel fraction to the reactor or / and other reactors for further reaction. The method of the invention is capable of increasing the gasoline yield by more than 5wt%, increasing the octane number by 1 unit, increasing the isobutene content in liquefied gas by more than 30wt% and increasing the alkene content in gasoline by more than 25wt%.

Description

technical field [0001] The invention belongs to the catalytic conversion method of petroleum hydrocarbons in the absence of hydrogen, more specifically, it belongs to the catalytic conversion method of increasing the gasoline octane number barrel. Background technique [0002] The conventional catalytic cracking process is mainly used to produce gasoline, and the gasoline yield is as high as 50% by weight. In the early 1980s, unleaded gasoline forced the development of catalytic cracking technology to produce high-octane gasoline. For this reason, the process conditions and catalyst types of catalytic cracking have undergone great changes. In terms of technology, it is mainly to increase the reaction temperature, shorten the reaction time, increase the severity of the reaction, inhibit the hydrogen transfer reaction and overcracking reaction, and improve the contact efficiency between oil gas and catalyst at the bottom of the riser; in terms of catalyst, the USY type zeolite...

Claims

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Application Information

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IPC IPC(8): C10G69/00
Inventor 崔守业许友好刘四威付升黄建程从礼龚剑洪
Owner CHINA PETROLEUM & CHEM CORP
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