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
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[0036] Example 1
[0037] This example illustrates that the method provided by the present invention can increase the yield of FCC gasoline and increase the gasoline octane number.
[0038] Using the test device in the comparative example, the FCC gasoline was cut into light and heavy gasoline by distillation. Among them, the distillation range of heavy gasoline is 160-220°C. The catalytically cracked diesel is cut into light and heavy diesel by the method of distillation, and the distillation range of the light diesel is 168-281°C. The heavy gasoline and light diesel oil are mixed into a mixed oil, enter the riser reactor from below the catalytic cracking feedstock nozzle, and react with the catalyst MLC-500. The feedstock oil and reaction conditions are the same as the comparative example. The reacted oil and gas and catalyst go up to the raw material feeding reaction section, and the generated oil and gas and spent agent continue to go up into the separation system to separate ...
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[0040] Example 2
[0041] This example illustrates that the method provided by the present invention can increase the yield of FCC gasoline and increase the gasoline octane number.
[0042] The test device, feedstock oil and catalytic cracking reaction conditions used in this example are the same as those in Example 1, except that light diesel oil is firstly hydrorefined and then mixed with catalytically cracked heavy gasoline into a medium riser reactor for reaction. The conditions of hydrorefining are: reaction temperature is 350°C, pressure is 3.2MPa, hydrogen-to-oil volume ratio is 300:1, and volumetric space velocity in weight hour is 2.5h -1 . The properties of the mixed oil are shown in Table 4. 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 of the mixed oil after hydrogenation is increased by 1.18% after refining, but the aromatics content in gasoline is 10.67% lower than that ...
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