Catalytic conversion method for producing gasoline containing rich aromatic hydrocarbon

A catalytic conversion method and aromatic gasoline technology, which is applied in the treatment of hydrocarbon oil, petroleum industry, hydrocarbon oil treatment products, 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 hydrogenated cycle oil in the upstream zone will seriously affect the conversion of the downstream heavy oil

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0040] This example illustrates that by adopting the method provided by the present invention, the raw material is firstly cut by distillation range to obtain the light fraction of light cycle oil and the heavy fraction of light cycle oil, and the cut point is 250°C.

[0041] The heavy fraction of light cycle oil enters the medium-sized hydrogenation unit, and the hydrogenation test conditions are: hydrogen partial pressure 8.0MPa; average bed reaction temperature 360°C, volume space velocity 2.0 hours -1 , hydrogen oil volume ratio 1100Nm 3 / m 3 . The dicyclic aromatics content in the hydrogenated heavy fraction was 9.6% by weight.

[0042] The light fraction of light cycle oil and the heavy fraction of light cycle oil after hydrogenation enter two sets of independent medium-sized catalytic cracking riser reactors respectively. The main operating parameters of the two medium-sized catalytic cracking units are shown in Table 3. The products produced by two sets of medium-s...

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Abstract

The invention provides a catalytic conversion method for producing gasoline containing rich aromatic hydrocarbon. 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 and respectively conveying the light fraction and the heavy fraction into different riser reactors of catalytic cracking devices, 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 hydrocarbon 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 to satisfy harsh conditions necessary for the catalytic cracking reaction of different fractions of the light cycle oil 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 the catalytic conversion method of petroleum hydrocarbons in the absence of hydrogen, more specifically, a catalytic conversion method for producing gasoline rich in benzene, toluene and xylene from catalytic cracked light cycle oil. Background technique [0002] With the development of heavy crude oil and the rapid growth of market demand for light oil products, in my country, catalytic cracking technology, which is used to lighten heavy oil, has developed rapidly. However, a fact that must be faced is that the quality of catalytic cracking diesel oil (or "light cycle oil") has always been relatively poor, with high density, high aromatic content, and low cetane number. It is also difficult to meet increasingly stringent diesel specifications. How to solve the catalytic cracking light cycle oil is an increasingly serious problem. P-xylene is an important raw material for the polyester industry, mainly used to produce purifie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/00
CPCC10G69/00C10G2400/02
Inventor 龚剑洪毛安国崔守业唐津莲张毓莹
Owner CHINA PETROLEUM & CHEM CORP
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