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Method for producing high-octane petrol

A technology for high-octane gasoline and heavy gasoline, applied in gasoline stabilization, petroleum industry, cracking, etc., can solve the problems of large olefin loss and low gasoline yield, increase gasoline yield and octane number, and avoid olefins The effect of excessive loss

Active Publication Date: 2009-07-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the whole distillate gasoline is refined back in this method, the yield of gasoline is low and the loss of olefins in gasoline is too large

Method used

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  • Method for producing high-octane petrol
  • Method for producing high-octane petrol
  • Method for producing high-octane petrol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This example shows that the method provided by the invention can increase the yield of catalytic cracking gasoline and increase the octane number of gasoline.

[0038] Using the test device in the comparative example, the catalytically cracked gasoline is cut into light and heavy gasoline by distillation. Among them, the distillation range of heavy gasoline is 160-220°C. The catalytic cracking diesel oil is cut into light and heavy diesel oil through distillation, wherein the distillation range of light diesel oil is 168-281°C. Mix heavy gasoline and light diesel oil into mixed oil, enter the riser reactor from the bottom of the catalytic cracking raw material nozzle, and contact with catalyst MLC-500 for reaction. The raw material oil and reaction conditions are the same as those in the comparative example. After the reaction, the oil gas and catalyst enter the raw material feeding reaction section upwards, and the generated oil gas and spent agent continue to enter t...

Embodiment 2

[0041] This example shows that the method provided by the invention can increase the yield of catalytic cracking gasoline and increase the octane number of gasoline.

[0042] The test device, raw oil and catalytic cracking reaction conditions used in this example are the same as those in Example 1, except that the light diesel oil is firstly hydrotreated and then mixed with catalytic cracked heavy gasoline into a medium-sized riser reactor for reaction. The conditions for hydrofining are: reaction temperature is 350°C, pressure is 3.2MPa, volume ratio of hydrogen to oil is 300:1, and volumetric space velocity is 2.5h -1 . The properties of the mixed oil are shown in Table 4. The product distribution and properties are shown in Table 5.

[0043] It can be seen from Table 5 that compared with Example 1, the gasoline yield increased by 1.18 percentage points after the hydrogenated mixed oil was re-refined, but the aromatics content in gasoline was reduced by 10.67 percentage po...

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Abstract

The invention relates to a method for producing high-octane petrol, which comprises the following steps: introducing raw oil into a catalytic cracking reactor to be contacted with a catalyst and react under the catalytic cracking reaction condition; separating the reaction oil gas and the catalyst to be generated which is reclaimed after steam stripping and regeneration; introducing the reaction oil gas into a subsequent fractionation part; and separating out heavy petrol and light diesel fuel fractions with the distillation range of between 100 and 300 DEG C by the fractionation part, and pouring the fractions with or without hydrogenation into the catalytic cracking reactor for freshening. By adopting the method, a common catalytic cracking unit and a common catalyst can be used, the prior device is unnecessary to be changed significantly, and the heavy petrol and the light diesel fuel fractions are introduced back into the catalytic cracking reactor respectively for freshening with major reactions of chain scission reaction of arene lateral chains and transalkylation reaction so as to improve the petrol yield and the octane number.

Description

technical field [0001] The present invention relates to a catalytic conversion method for petroleum hydrocarbons, more specifically, relates to a catalytic conversion method for improving gasoline yield and gasoline octane number. Background technique [0002] With the increasingly stringent environmental protection regulations, countries all over the world have put forward more and more stringent restrictions on the sulfur content, olefin content, and aromatic content of motor gasoline. For example, my country's motor gasoline standard (GB17930-2006, referred to as the National III standard) stipulates that the benzene content of motor gasoline Aromatic content Olefin content Sulfur content <0.015w%. At the same time, with the rapid development of the economy, the level of the automobile manufacturing industry has been continuously improved, the number of automobiles has increased rapidly, the demand for gasoline has increased day by day, and the requirements for t...

Claims

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Application Information

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IPC IPC(8): C10G11/02C10G7/02
Inventor 李强常学良许友好杨克勇
Owner CHINA PETROLEUM & CHEM CORP
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