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Method for non-hydroaromatizating and desulfurizing catalytically cracked gasoline

A technology of catalytic cracking gasoline and aromatization, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., and can solve problems such as octane number increase

Inactive Publication Date: 2004-03-31
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But if aromatic hydrocarbons are produced, the octane number will also increase

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0050] A fixed-bed reactor is used as the aromatization reactor, and the whole fraction of catalytically cracked gasoline enters the aromatization reactor for reaction. The aromatization catalyst adopts ZSM-5 molecular sieve, and the molecular sieve is treated with steam at 520°C. Dip the tungstic acid solution on the molecular sieve so that the weight content of tungsten is 2%. The aromatization reaction conditions are: reaction temperature 320°C, reaction pressure 1.0MPa, weight space velocity 1.5h -1 . ≤C in exhaust gas 4 The yield of cracked gas is 9.59%, and the yield of oil is: 90.41%. Experimental results show that the catalyst has dual functions of olefin aromatization and hydrodesulfurization, and the olefin aromatization and hydrodesulfurization reactions are simultaneously carried out in the aromatization reactor.

[0051] The gasoline from the aromatization reactor is the product gasoline.

[0052] The composition of product gasoline is: normal paraffins: 8.82...

example 2

[0054] The fluidized bed reactor is used as the aromatization reactor, and the whole fraction of catalytically cracked gasoline enters the aromatization reactor for reaction. The aromatization catalyst adopts ZSM-5 molecular sieve, and the molecular sieve is treated with steam at 650°C. Soak tungstic acid and ammonium molybdate solution on the molecular sieve, so that the weight content of tungsten is 1% and the weight content of molybdenum is 3%. The aromatization reaction conditions are: the reaction temperature is 410°C, the reaction pressure is 0.15MPa, the weight ratio of catalyst to FCC gasoline is 6:1, and the weight ratio of water vapor to FCC gasoline is 0.05:1; the catalyst to be regenerated After stripping and regeneration, it returns to the reactor for recycling. ≤C in exhaust gas 4 The yield of cracked gas is 10.4%, and the yield of oil is: 89.6%. Experimental results show that the catalyst has dual functions of olefin aromatization and hydrodesulfurization, an...

example 3

[0058] Y molecular sieves were loaded with 1.5% P, 2% Zn and 0.5% Na, and the reaction conditions were the same as those in Example 2. ≤C in exhaust gas 4 The yield of cracked gas is 13.6%, and the yield of oil is: 86.4%. Experimental results show that the catalyst has dual functions of olefin aromatization and hydrodesulfurization, and the olefin aromatization and hydrodesulfurization reactions are simultaneously carried out in the aromatization reactor.

[0059] The gasoline from the aromatization reactor is the product gasoline.

[0060] The composition of product gasoline is: normal paraffins: 12.86%, isoparaffins: 40.86%, olefins: 2.87%, naphthenes: 5.11%, aromatics: 38.34%, C5 diene content: 40ppm, sulfur content: 42ppm, octane number (RON): 90.1, the total liquid yield was 86.4%.

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Abstract

A process of crackling and aromatizing gasoline, and desulfurizing. It comprises: all fractions of crackling gasoline by catalysizing or light fractions entering an aromatizing desulfurizing reactor,and aromatizing olefin, hydrogenating and desulfurizing with hydrogen produced by aromatizing are hydrogenated, reducing the contents of olefin and sulfur in gasoline, deodorizing the products, then obtaining high-grade gasoline product.

Description

technical field [0001] The invention relates to a technology for modifying catalytic cracking gasoline, and in particular provides a method for aromatization and desulfurization of catalytic cracking gasoline. Background technique [0002] The 3rd World Fuel Conference published the "World Fuel Charter" and proposed worldwide gasoline and diesel standards. Part of the content is shown in the table below. [0003] Table Petrol Standards Part of the World Fuel Charter [0004] 1st gear 2nd gear 3rd gear [0005] Octane, RON 91, 95, 98 91, 95, 98 91, 95, 98 [0006] MON 82, 85, 88 82.5, 85, 88 82.5, 85, [0007] 88 [0008] Lead content / g / L (maximum) 0.013 No lead allowed No lead allowed [0009] Sulfur content (ppm) 1000 200 30 [0010] Hydrocarbon composition [0011] Aromatics / % v / v 50 40 35 [0012] Benzene content / % v / v 5 2.5 1 [0013] Olefin content / % v / v 20 10 [0014] In order to a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/04
Inventor 吴治华徐龙伢王清遐谢素娟
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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