Catalytic cracking process for reducing content of olefin in gasoline

An olefin content, catalytic cracking technology, applied in catalytic cracking, cracking, petroleum industry and other directions, can solve the problem of no process method, and achieve the effect of reducing flexibility, reducing olefin content, and being easy to implement

Inactive Publication Date: 2004-03-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] To sum up, in terms of technology for reducing the olefin content of catalytic cracking gasoline, there is no relatively simple and easy process in the prior art; and there has never been a plan to effectively use the surplus of the catalytic cracking gas-rich compressor. to report

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  • Catalytic cracking process for reducing content of olefin in gasoline
  • Catalytic cracking process for reducing content of olefin in gasoline

Examples

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Effect test

Embodiment 1

[0053] This example shows that the method provided by the present invention can significantly reduce the olefin content of catalytically cracked gasoline, and has little impact on the processing capacity and product distribution of the device.

[0054] In a set of 1 million tons / year riser catalytic cracking unit, the imported wax oil mixed with residual oil shown in Table 2 is used as raw material, and LV-23 catalyst produced by Lanzhou Refinery and Chemical General Plant Catalyst Factory and GraceDavison Company are used. The mixed agent of Ramcat catalyst, its properties are shown in Table 3, carry out the industrial test of method provided by the invention. The light gasoline fraction used is the fraction with an end boiling point less than 130°C extracted from the upper part of the stabilizing tower, and its properties are shown in Table 4. The main operating conditions during the test are shown in Table 5, and the product distribution is shown in Table 6. The properties...

Embodiment 2

[0059] This example shows that the method provided by the present invention can significantly reduce the olefin content of catalytically cracked gasoline, and has little impact on the processing capacity and product distribution of the device.

[0060] In a riser catalytic cracking unit with a processing capacity of 16t / h, the Daqing atmospheric residue shown in Table 2 was used as the raw material, and the RAG catalyst industrially produced by the Qilu Petrochemical Company Catalyst Factory shown in Table 3 was used. An industrial trial of the method provided by the invention was carried out. The distillate of light gasoline used is the condensate oil of the gas-rich compressor, and its properties are shown in Table 4. The main operating conditions during the test are shown in Table 8, and the product distribution is shown in Table 9. The properties of gasoline products are shown in Table 10. For comparison, the main operating conditions, product distribution and properties...

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Abstract

A catalytic cracking process for lowering the olefin content of gasoline features that the condensed oil of rich gas compressor and / or the light gasoline fraction pumped from the top of stablizing tower are filled in the lifting tube reactor at the uppers tream of raw oil nozzle, or in conjunctino with the raw oil from raw oil nozzle to make it in contact with regenerated catalyst and take part in reaction, the resultant flows upward along the lifting tube, the oil gas is quickly separated from the catalyst at outlet of lifting tube to recover the resultant, and the catalyst is stripped and regenerated for reuse. The content of olefin can be reduced by 10-20 v%.

Description

technical field [0001] The invention belongs to a catalytic cracking method for petroleum hydrocarbons, more specifically, a catalytic cracking method for reducing the olefin content in product gasoline. Background technique [0002] In recent years, the environmental protection regulations of various countries in the world have put forward increasingly strict requirements on the quality of gasoline and diesel, especially the requirements on the olefin content, sulfur content, benzene content and other indicators of gasoline are becoming more and more stringent. Therefore, the requirements from environmental protection have become the main driving force to promote the further development of various refining technologies, and the more traditional catalytic cracking technology is the first to bear the brunt. [0003] As we all know, the olefin content of FCC gasoline is 35-65% by weight, which is a relatively representative gasoline fraction rich in olefins. Although this kin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/00C10G11/18
Inventor 常学良霍永清陈祖庇王亚民钟乐燊王泽育龙军
Owner CHINA PETROLEUM & CHEM CORP
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