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A method for increasing gasoline octane number

A gasoline octane number and gasoline fraction technology, which is applied in the petroleum industry, processing hydrocarbon oil, liquid carbon-containing fuels, etc., can solve the problem of inability to effectively improve the octane level of the middle distillate section of catalytic cracking gasoline, the oxygen content of the product gasoline exceeds the standard, Solve problems such as limited increase in gasoline octane number, achieve the effect of reducing olefin content, increasing gasoline octane number, and increasing octane number

Active Publication Date: 2017-06-30
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0017] In summary, the method of high-temperature upgrading of catalytic cracking gasoline to increase the octane number will reduce the gasoline yield and cause a large amount of gasoline loss; The improvement is limited; while in the catalytic upgrading process of FCC gasoline, the alkylation process that introduces benzene as a reactant is economically beneficial, and the etherification process is mainly aimed at the light components of FCC gasoline, and it is very easy to cause the oxygen content in the product gasoline to exceed the standard , the aromatization process is also mainly concentrated in the field of upgrading the light components of catalytic cracking gasoline with high olefin content, and cannot effectively improve the octane level of the middle distillate section of catalytic cracking gasoline

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  • A method for increasing gasoline octane number
  • A method for increasing gasoline octane number
  • A method for increasing gasoline octane number

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Experimental program
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Embodiment approach

[0048] According to one embodiment of the present invention, the method for increasing the octane number of gasoline comprises: fractionating catalytically cracked gasoline to obtain a light fraction (distillation range 150°C). The middle distillate with a distillation range of 80-150°C is extracted with a polar solvent to remove basic nitrogen, washed with water to remove water-soluble alkaline substances, mixed with atomizing gas, pressurized to the required pressure, and heated up after heat exchange When the reaction temperature reaches the reaction temperature, it is introduced into the aromatization reactor, and the aromatization reaction occurs in contact with the regenerated aromatization catalyst flowing upward under the action of the lifting gas (which can be the same as the above-mentioned atomizing gas) from the regenerating inclined tube. The oil gas generated by the reaction enters the settler from the outlet of the aromatization reactor, and the oil gas is separa...

Embodiment 1

[0064] This example is used to illustrate the method for increasing the octane number of gasoline provided by the present invention.

[0065] Using the middle distillate listed in Table 1 as feedstock oil, using the aromatization catalyst A listed in Table 3, the experiment was carried out on a medium-sized device operated by continuous reaction regeneration. The raw oil enters the riser reactor, where C 7 ~C 10 The quality of olefins accounts for 29.02% of the total mass of gasoline in this fraction section. At 275°C of reaction temperature, 0.2MPa of reaction pressure, 30 agent-oil ratio, 30 seconds of reaction time, atomizing gas (N 2 ) to react under the condition that the weight ratio of raw material oil is 0.1:1. Separation of the raw catalyst and reaction oil gas, the raw catalyst is stripped and regenerated and then returned to the reactor, the reaction oil gas enters the separation system and is separated to obtain gasoline fractions, and the gasoline fractions are ...

Embodiment 2

[0069] This example is used to illustrate the method for increasing the octane number of gasoline provided by the present invention.

[0070] Using the middle distillate listed in Table 1 as feedstock oil, using the aromatization catalyst A listed in Table 3, the experiment was carried out on a medium-sized device operated by continuous reaction regeneration. The raw oil enters the riser reactor, where C 7 ~C 10 The quality of olefins accounts for 29.02% of the total mass of gasoline in this fraction section. At 350°C of reaction temperature, 0.2MPa of reaction pressure, 30 agent-oil ratio, 30 seconds of reaction time, atomizing gas (N 2 ) to react under the condition that the weight ratio of raw material oil is 0.1:1. Separation of the raw catalyst and reaction oil gas, the raw catalyst is stripped and regenerated and then returned to the reactor, the reaction oil gas enters the separation system and is separated to obtain gasoline fractions, and the gasoline fractions are ...

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Abstract

The present invention relates to a method for increasing the octane number of gasoline, the method comprising: (1) fractionating catalytically cracked gasoline to obtain light fractions, middle fractions and heavy fractions; (2) in an aromatization reactor, the steps (1) The obtained middle distillate is contacted with an aromatization catalyst to generate an aromatization reaction to obtain an aromatized gasoline fraction; (3) the light fraction and the heavy fraction obtained in step (1) are Mix with the gasoline fraction obtained in step (2) to obtain a gasoline product. According to the method for increasing the octane number of gasoline provided by the invention, the octane number of gasoline products can be greatly increased while reducing the olefin content in gasoline.

Description

technical field [0001] The invention relates to a method for increasing the octane number of gasoline. Background technique [0002] The octane number of FCC gasoline in my country is relatively low, only 88-92, which is significantly different from the octane number of FCC gasoline in developed countries (93-94). At present, FCC gasoline accounts for more than 80% of my country's motor gasoline. Therefore, the development of new prolific high-octane gasoline catalytic cracking process is of great significance for improving the overall level of my country's motor gasoline octane number. [0003] The octane number of gasoline is determined by its chemical composition. Under the condition of similar molecular weight, the octane number of hydrocarbons follows the order of normal alkanes < cycloalkanes < normal alkenes < isoparaffins, isoalkenes < aromatics Increase. The traditional method of increasing the octane number of catalytic cracking (FCC) gasoline mainly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G57/00C10L1/04
Inventor 张诗晓张久顺魏晓丽陈学峰
Owner CHINA PETROLEUM & CHEM CORP
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