Catalytic conversion method for preparing propylene and high octane gasoline

A technology of high-octane gasoline and catalytic conversion method, applied in catalytic cracking, cracking, organic chemistry, etc., can solve the problems of low yield of propylene and aromatics, underutilization of low-carbon olefin latent content, etc., and achieve gasoline yield Increased, reduced dry gas yield, improved gasoline octane number

Active Publication Date: 2010-06-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The above prior art still has deficiencies in the design of alkane molecular cracking reactions. At the same time, the product distribution of the prior art is cut according to the conventional FCC fractionation system, and the potential content of aromatics and low-carbon olefins in gasoline or diesel oil is not fully utilized. , resulting in low yields of propylene and aromatics

Method used

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  • Catalytic conversion method for preparing propylene and high octane gasoline
  • Catalytic conversion method for preparing propylene and high octane gasoline
  • Catalytic conversion method for preparing propylene and high octane gasoline

Examples

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Embodiment 1

[0066] This embodiment illustrates that by adopting the method provided by the present invention, the hard-to-crack and easy-to-crack raw materials enter the first reactor, the re-cracked raw materials enter the second reactor, and the catalytic wax oil raffinate enters the second reactor. The two reaction systems use the same The case of catalytic conversion of fractionation systems to produce propylene and high-octane gasoline.

[0067] This example follows figure 1 The process is tested on the medium-sized device of the riser reactor. The raw material oil A is directly used as the easy-to-crack raw material, and propane and butane are used as the difficult-to-crack raw materials. The properties of the raw material oil A are listed in Table 1, and the operating conditions and product distribution are listed. in Table 2.

[0068] It can be seen from Table 2 that the yield of propylene is as high as 27.74% by weight, the yield of gasoline is as high as 35.64% by weight, the R...

Embodiment 2

[0070] This example illustrates that by adopting the method provided by the present invention, the hard-to-crack and easy-to-crack raw materials enter the first reactor, the re-cracked raw materials enter the second reactor, and the hydrocatalytic wax oil enters the second reactor. The two reaction systems use the same fractionation Cases where the system catalytically converts to propylene and high-octane gasoline.

[0071] This example follows figure 2 The process is tested on the medium-sized device of the riser reactor. The raw material oil A is directly used as the easy-to-crack raw material, and propane and butane are used as the difficult-to-crack raw materials. The properties of the raw material oil A are listed in Table 1, and the operating conditions and product distribution are listed. in Table 2.

[0072] It can be seen from Table 2 that the yield of propylene is as high as 28.88% by weight, the yield of gasoline is as high as 38.28% by weight, the RON is as high...

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Abstract

The invention discloses a catalytic conversion method for preparing propylene and high octane gasoline. Raw oil of different cracking properties enters different reaction regions of a first riser reactor to contact with catalytic cracking catalysts for carrying out cracking reactions so as to separate a spent catalysts from reaction oil gas; the reaction oil gas is separated for obtaining a product comprising the propylene, gasoline and a re-cracking raw material, wherein the re-cracking raw material is transmitted into a second riser reactor to contact with hot regenerated catalysts for carrying out catalytic conversion; and after the spent catalysts in the two riser reactors are burned in a same regenerator, the spent catalysts are respectively returned to the two riser reactors. In themethod, the yields of the propylene and the gasoline are obviously increased; the octane value of the gasoline is also obviously improved. Under the condition of largely increasing the yield of the propylene, the yield of dry gas is obviously reduced by more than 80% by weight.

Description

technical field [0001] This invention pertains to the catalytic conversion of hydrocarbons in the absence of hydrogen, and more particularly to a process for the conversion of heavy feedstocks to propylene and high octane gasoline. Background technique [0002] Propylene is an important organic chemical raw material and a synthetic monomer for polypropylene, acrylonitrile and other products. With the rapid growth of demand for derivatives such as polypropylene, the demand for propylene is also increasing year by year. The demand in the world propylene market has increased from 15.2 million tons 20 years ago to 51.2 million tons in 2000, with an average annual growth rate of 6.3%. It is estimated that the demand for propylene will reach 86 million tons by 2010, with an average annual growth rate of about 5.6%. [0003] The methods for producing propylene are mainly steam cracking and catalytic cracking (FCC), wherein steam cracking uses naphtha and other light oils as raw m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/00C10G11/04C07C11/06C07C4/06
CPCY02P20/52Y02P20/584
Inventor 刘守军崔守业许友好龚剑洪杨轶男程从礼
Owner CHINA PETROLEUM & CHEM CORP
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