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Catalytic converting method for improving petrol octane number

A catalytic conversion method and a technology for gasoline octane number, which are applied in directions such as naphtha catalytic reforming, can solve problems such as large loss of gasoline, and achieve the effects of increasing octane number, reducing sulfur content, and reducing olefins

Active Publication Date: 2005-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can significantly increase the octane number

Method used

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  • Catalytic converting method for improving petrol octane number
  • Catalytic converting method for improving petrol octane number

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This example illustrates: the effect of catalytic upgrading of heavy gasoline of different fractions by adopting the method provided by the present invention.

[0042] The gasoline fractions G2 and G3 listed in Table 3 were used as raw materials, and the catalyst B listed in Table 2 was used to carry out the test in a small fluidized bed reactor operated by continuous reaction regeneration. The test procedure is briefly described as follows: inject the preheated gasoline fraction G2 or G3 into the fluidized bed reactor, and the reaction temperature is 450 ° C, the pressure at the top of the reactor is 0.2 MPa, and the weight hourly space velocity is 10 hours. -1 , the agent-oil ratio is 6, and the water-oil ratio is 0.05, and it contacts and reacts with the catalyst B with carbon; the reaction product, water vapor and the unborn catalyst are separated in the settler, and the reaction product is separated, and the unborn catalyst enters the stripping The hydrocarbon prod...

Embodiment 2

[0047] This example illustrates that the method provided by the invention is applicable to different types of catalytic cracking catalysts.

[0048] Using the gasoline G2 listed in Table 3 as raw material and using the three catalysts listed in Table 2, the test was carried out in a small fluidized bed reactor operated by continuous reaction regeneration. Concrete test procedure is identical with embodiment 1. The test conditions, test results and properties of gasoline products are listed in Table 5.

[0049] As can be seen from Table 5, after the process provided by the present invention, the yield of gasoline products is 91.32 to 91.88% by weight, and the total liquid yield is 96.62 to 97.47% by weight, and the gasoline research method octane number after upgrading can be improved 1.1 to 2.2 units, the motor octane number can be increased by 0.8 to 1.1 units. Therefore, different types of catalysts can be used to implement the present invention to obtain relatively ideal ...

Embodiment 3

[0051] This example shows that within the scope of the reaction conditions described in the present invention, the upgrading effect of the octane number of the heavy gasoline fraction is relatively ideal.

[0052] Using the gasoline fraction G2 in Table 3 as the raw material and using the catalyst B in Table 2, a catalytic upgrading test was carried out in a small fluidized bed reactor operated by continuous reaction regeneration. The main operating conditions are: the reaction temperature is 400-500°C, the pressure at the top of the reactor is 0.2 MPa, and the weight hourly space velocity is 5-20 hours -1 , The agent-oil ratio is 4-10. Concrete test procedure is identical with embodiment 1. The test conditions, test results and properties of gasoline products are listed in Table 6.

[0053] As can be seen from Table 6, after the process provided by the present invention, the yield of gasoline products is 91.02~91.82% by weight, the total liquid yield is 96.54~97.18% by weig...

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Abstract

One catalyzed conversion method to increase gasoline octane number is to emit the preheated raw oil into the first conversion zone of the reactor, make them contact the regenerated heat catalyst and then reaction happens. The mixture of produced oil gas and catalyst flows upward or downward to the second conversion zone; at the same time, immit the heavy naphtha whose first distillate point is higher than 100deg.C and condensed medium into the primary position of the second conversion zone, and make contact them with the above mixture of reaction oil gas and catalyst and reaction takes place; separate the mixture of reaction oil gas and catalyst, reaction oil enters the succeeding separation system to be separated into products; among them, the gasoline product is separated into light naphtha and heavy naphtha that returns to the second conversion zone; after steam stripping catalyst is delivered to the regenerator to be regenerated after scorch, the regenerated catalyst returns to the reactor and can be recycled.

Description

technical field [0001] The invention belongs to the catalytic conversion method of petroleum hydrocarbons in the absence of hydrogen, more specifically, it is a catalytic conversion method for producing high-octane gasoline with low-octane gasoline as raw material. technical background [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, our country mainly uses No. 90 gasoline, but with the continuous improvement of the domestic automobile manufacturing industry and the increasing number of domestic imported cars, the demand for No. 93 gasoline or higher octane number is increasing day by day. Due to the limitations of the catalytic cracking process itself, the octane number of catalytic cracked gasoline is generally below No. 93, which has become a restrictive factor for further increasing the octane number of finished gasoline. Therefore, it is necessary ...

Claims

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Application Information

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IPC IPC(8): C10G35/06
Inventor 刘宪龙许友好张久顺龙军张执刚毛安国
Owner CHINA PETROLEUM & CHEM CORP
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