Catalytic conversion method for producing gasoline containing rich aromatic compounds

A technology of aromatic compounds and catalytic conversion method, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems of affecting conversion and high hydrogen consumption, and achieve the effect of reducing hydrogen consumption

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

In this method, not only the hydrogen consumption is high, but also the reaction of the hydroge...

Method used

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  • Catalytic conversion method for producing gasoline containing rich aromatic compounds
  • Catalytic conversion method for producing gasoline containing rich aromatic compounds

Examples

Experimental program
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Embodiment

[0036] This example illustrates that using the method provided by the present invention, the raw material is first cut through the distillation range to obtain the light cycle oil light fraction and the light cycle oil heavy fraction, and the cutting point is 250°C.

[0037] The heavy fraction of light cycle oil enters the medium-sized hydrogenation unit. The hydrogenation test conditions are: hydrogen partial pressure 8.0MPa; average bed reaction temperature 360°C, volumetric space velocity 2.0 hours -1 , The volume ratio of hydrogen to oil is 1100Nm 3 / m 3 . The content of bicyclic aromatic hydrocarbons in the hydrogenated heavy fraction is 9.6% by weight.

[0038] The light fraction of light cycle oil and the heavy fraction of light cycle oil after hydrogenation enter the upper and lower nozzles of the medium-sized catalytic cracking riser reactor respectively. The light fraction enters the lower nozzle and the hydrogenated heavy fraction enters the upper nozzle. The distance be...

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Abstract

The invention provides a catalytic conversion method for producing gasoline containing rich aromatic compounds. The catalytic conversion method comprises the following steps: cutting catalytic cracking light cycle oil to obtain a light fraction and a heavy fraction, performing hydrogenation treatment on the heavy fraction to obtain a hydrogenated heavy fraction, singly conveying the light fraction and the hydrogenated heavy fraction into catalytic cracking devices from different nozzles in a layering manner, performing a cracking reaction in the presence of a catalytic cracking catalyst, and separating reaction products to obtain a product containing the gasoline which contains rich aromatic compounds and the light cycle oil. According to the method, single catalytic cracking devices are used for processing the light fraction and the hydrogenated heavy fraction of the light cycle oil, and the light fraction and the heavy fraction enter the catalytic cracking devices in the layering manner, so that the harsh conditions necessary for the catalytic cracking reaction of different fractions of the light cycle oil can be optimized and satisfied to the maximum, so as to produce catalytic gasoline containing rich benzene, toluene and xylene to the maximum.

Description

Technical field [0001] The invention belongs to a catalytic conversion method of petroleum hydrocarbons in the absence of hydrogen, and more specifically, is a catalytic conversion method for producing gasoline rich in benzene, toluene and xylene by catalytically cracking light cycle oil. Background technique [0002] With the development of heavy crude oil and the rapid growth of the market's demand for light oil products, the catalytic cracking technology as a light heavy oil has been rapidly developed in China. However, we must face the fact that the quality of FCC diesel (or "light cycle oil") has always been relatively poor, with high density, high aromatic content, and low cetane number, even through diesel hydro-upgrading technology. It is also difficult to meet increasingly stringent diesel specifications. How to solve the FCC light cycle oil is an increasingly serious problem. Paraxylene is an important raw material in the polyester industry, mainly used to produce pur...

Claims

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Application Information

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IPC IPC(8): C10G69/00
CPCC10G69/00
Inventor 毛安国龚剑洪张毓莹
Owner CHINA PETROLEUM & CHEM CORP
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