Catalytic converting method for improving petrol octane number

A catalytic conversion method and gasoline octane number technology, applied in the direction of naphtha catalytic reforming, etc., can solve the problems of large gasoline consumption, achieve the effects of increasing octane number, reducing hydrothermal deactivation, and reducing sulfur content

Inactive Publication Date: 2006-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 converting method for improving petrol octane number

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This example illustrates that the octane number of catalytically cracked gasoline can be further increased by adopting the method provided by the invention. The test was carried out on a medium-sized riser catalytic cracking unit.

[0029]Catalytic gasoline A (RON, MON are 87.5,78.2 respectively, olefin content is 23.1% by weight) that boiling range is 110-205 ℃ enters the first reaction section from 1.2 meters below the catalytic cracking raw material nozzle, contacts with catalyst C, in The reaction was carried out under the conditions that the reaction temperature was 650° C., the residence time was 0.5 seconds, and the solvent-to-oil ratio was 6. The reacted oil gas and the reacted catalyst enter the FCC raw material cracking section (the second reaction section); the FCC raw material oil enters the reactor from the bottom of the second reaction section, and contacts with the reacted oil gas and catalyst from the first reaction section, and the generated oil gas and...

Embodiment 2

[0035] This example illustrates that the octane number of different types of catalytically cracked heavy-distillate gasoline can be increased by the method provided by the present invention. The tests were carried out in a medium-scale riser catalytic cracking unit.

[0036] Four kinds of catalytic cracking heavy distillate gasolines listed in Table 3, A, B, C and D, were respectively used as raw materials for the test, and catalyst C listed in Table 2 was used. The specific test steps were the same as in Example 1. The main reaction conditions, product distribution and main properties of gasoline products are listed in Table 5. It can be seen from Table 5 that no matter what type of FCC heavy gasoline, the octane number of FCC gasoline can be increased by 2-5 units by using the method provided by the present invention.

Embodiment 3

[0038] This example illustrates that various types of catalysts can be used in the present invention.

[0039] With gasoline A listed in Table 3 as raw material, three kinds of catalysts A, B and C listed in Table 2 were used to test, and the specific test steps were the same as in Example 1. The main reaction conditions, product distribution and main properties of gasoline products are listed in Table 6. As can be seen from Table 6, when catalyst A is used, the RON and MON of the product are 93.2 and 81.5 respectively, the olefin content is 8.8% by weight, and the sulfur content is 760ppm; when catalyst B is used, the RON and MON of the product are respectively 93.0 .

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Abstract

One catalyzed conversion method to increase gasoline octane number is to emit the heavy petrol whose first distillate point is higher than 100deg.C into the first conversion zone at the bottom of the reactor riser and there contact the regenerated catalyst from the regenerator which causes reaction. The product flow upward along the reactor riser; separate the reaction gas from the catalyst, through stripping and regenerated, the catalyst can be recycled; the separated reaction oil gas is sent to the retral separation system to be further separated into various products. This invention can be carried out by common catalyzed conversion equipment, and can achieve the aim to increase octane number of catalyzed cracked gasoline, without any need to use particular catalyst or to modify the equipment in a big way.

Description

technical field [0001] The invention belongs to the catalytic conversion method of petroleum hydrocarbons in the absence of hydrogen, more specifically, 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, 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 or higher octane gasoline will increase day by day. Due to the limitations of the catalytic cracking process itself, the catalytic cracking gasoline has an octane number below No. 93, which has become a restrictive factor for further increasing the octane number of finished gasoline. Therefore, it is necessary to find a way to increase the octane number of gasol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G35/06
Inventor 张久顺刘宪龙龙军张执刚许友好
Owner CHINA PETROLEUM & CHEM CORP
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