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Catalytic conversion method for increasing gasoline octane number

A gasoline octane number and catalytic cracking technology, which is applied in the field of catalytic conversion for improving gasoline octane number, can solve problems such as large gasoline loss, and achieve the effects of increasing octane number and reducing olefins

Active Publication Date: 2014-08-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can significantly increase the octane number of gasoline, but the loss of gasoline is relatively large

Method used

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  • Catalytic conversion method for increasing gasoline octane number
  • Catalytic conversion method for increasing gasoline octane number

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] This example illustrates the implementation effect of the method provided by the present invention, using a catalyst with low activity and uniform activity to catalytically crack wax oil.

[0072] Embodiment 1 adopts a medium-sized variable-diameter riser reactor, 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 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; The apex angle of the isosceles trapezoid in the longitudinal section of the junction of the zones 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°...

Embodiment 2

[0079] Example 2 illustrates the implementation effect of the method provided by the present invention, using a catalyst with low activity and uniform activity to catalytically crack wax oil.

[0080] Embodiment 2 adopts the same medium-sized variable-diameter riser reactor as in Embodiment 1, catalytic cracking feedstock oil, and operating steps and operating conditions are the same as in Embodiment 1. The difference from Example 1 is that the CGP-1 catalyst with an average activity of 50 after aging at 800° C. and 100% steam for 30 hours is used. The operating conditions, product distribution and gasoline properties tested are listed in Table 3.

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Abstract

A catalytic conversion method for increasing a gasoline octane number comprises the following steps: performing a cracking reaction in a first reaction zone of a reactor by contacting high-quality catalytic cracking raw oil with a thermal regenerated catalyst with low activity and relatively uniform activity distribution to generate oil gas, allowing the generated oil gas and a carbon-containing catalyst to enter a second reaction zone, performing a selective hydrogen transfer reaction and an isomerization reaction at a low reaction temperature, separating the generated oil gas from the carbon-containing catalyst by a gas-solid separation device, performing steam stripping and regeneration of the separated catalyst to be regenerated for recycle; further separating the separated reaction oil gas to obtain liquid products such as liquefied gas, a light gasoline fraction, a heavy gasoline fraction, diesel oil, and the like; injecting a heavy gasoline fraction with an initial boiling point more than 100 DEG C into the bottom of the second reaction zone for further reaction. The method can increase both the gasoline yield and the gasoline octane number.

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 a catalytic conversion method for increasing the octane number of gasoline. Background technique [0002] FCC gasoline is the main component of motor gasoline in my country, so its octane number directly affects the octane number level of finished gasoline. At present, No. 93 gasoline is mainly used in my country, but with the continuous improvement of the domestic automobile manufacturing industry and the increasing number of imported cars in China, the demand for No. 93 and higher octane gasoline is increasing day by day. Due to the limitations of the catalytic cracking process itself, catalytic cracking gasoline has an octane number below No. 93, which has become a restrictive factor to further increase the octane number of finished gasoline. Therefore, it is necessary to seek a catalytic method to increase ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G55/06
Inventor 刘银亮许友好崔守业张执刚朱根权姜楠
Owner CHINA PETROLEUM & CHEM CORP