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Method for more producing light oil by using hydrocarbon oil

A technology for light oil and hydrocarbon oil, applied in the treatment of hydrocarbon oil, petroleum industry, hydrotreating process, etc., can solve the problems of reducing the yield of raw material light oil, etc., to achieve the best selectivity, increase the yield, reduce the effect of difficulty

Active Publication Date: 2011-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the processing of inferior raw materials, only by adjusting the catalyst composition and process parameters to increase the heavy oil conversion capacity will often be accompanied by a significant increase in dry gas and coke yields, which will undoubtedly reduce the light oil yield of raw materials

Method used

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  • Method for more producing light oil by using hydrocarbon oil
  • Method for more producing light oil by using hydrocarbon oil
  • Method for more producing light oil by using hydrocarbon oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0042] According to a preferred embodiment of the present invention, the method further includes repeating steps (2)-(5) for the catalytic cracking product obtained in step (5). The catalytic heavy oil after the separation of light components is hydro-upgraded and re-refined or sent to another catalytic cracking unit for catalytic cracking, thereby further increasing the yield of light oil.

[0043] In the present invention, the hydrocarbon oil can be selected from crude oil, atmospheric residual oil, vacuum residual oil, atmospheric gas oil, vacuum gas oil, straight run gas oil, propane light / heavy deoiling, coking gas oil and coal One or more of the liquefied products.

[0044] Preferably, the method provided by the present invention further includes separating the catalyst from the above-mentioned hydro-upgraded catalytic cracking product, the catalyst is sent to a regenerator for regeneration, and the oil and gas produced by the reaction enters the fractionation part of ca...

Embodiment 1

[0061] according to figure 1 The process shown is to produce light hydrocarbon oil from hydrocarbon oil, and the catalytic cracking reactor is a medium-sized riser catalytic cracking unit.

[0062] The properties of the raw material hydrocarbon oil used in the medium-sized catalytic cracking unit are shown in Table 1. The reaction conditions and product distribution of catalytic cracking are shown in Table 2.

[0063] The catalytic heavy oil in the catalytic cracking products shown in Table 2 is first removed most of the colloids and asphaltenes by solvent extraction. The extraction operation temperature is 190 ° C and the pressure is 5 MPa. The solvent and catalytic heavy oil The weight ratio is 3. The properties of catalytic heavy oil and solvent deasphalted oil are shown in Table 3.

[0064] Then adopt the process of hydrogenation upgrading to remove the colloids and asphaltenes, and the saturated part of polycyclic aromatic hydrocarbons. The hydrogenation unit is also a ...

Embodiment 2

[0073] According to the method of Example 1, light hydrocarbon oil is produced from hydrocarbon oil. The difference is that the reaction conditions and product distribution of catalytic cracking are as shown in Table 2, and the conditions of hydrogenation upgrading are: reaction pressure is 10.0MPa, volume space velocity 2.5h -1 , the reaction temperature is 410°C, and the volume ratio of hydrogen to oil is 800:1Nm 3 / m 3 . The properties of the products after hydrogenation upgrading are shown in Table 5. In the catalytic cracking medium-sized unit, the catalytic heavy oil after hydrogenation was tested in the catalytic cracking operation mode. The test operating parameters and product distribution are listed in Table 6.

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Abstract

The invention discloses a method for more producing light oil, comprising the following steps of: enabling hydrocarbon oil to contact with a cracking catalyst under the conditions of catalytic cracking, wherein the contacting condition makes the transformation ratio of the hydrocarbon oil be 50-73wt%; cutting and separating the catalytic cracking products according to the order of boiling points to obtain rich gas, crude gasoline fraction, light diesel fuel fraction, heavy diesel fuel fraction, refining oil fraction and slurry oil; carrying out solvent deasphalting on a part of or all of the obtained slurry oil to obtain solvent deasphalting oil with the distillation range of 250-600 DEG C; mixing the obtained solvent deasphalting oil with the obtained heavy diesel fuel fraction and refining oil fraction and then contacting with a hydro-upgrading catalyst, wherein the contact condition makes the yield of hydrogenised heavy oil be 70-99wt%; carrying out the separation reaction on the mixture to obtain gas, light oil and hydrogenised heavy oil; and enabling the obtained hydrogenised heavy oil to contact with a cracking catalyst under the condition of catalytic cracking, wherein the contact condition makes the transformation ratio of the hydrogenised heavy oil higher than 60wt%. With the method provided by the invention, the yield of the light oil is greatly improved.

Description

technical field [0001] The invention relates to a method for producing more light oil from hydrocarbon oil. Background technique [0002] In recent years, international oil prices have continued to rise, and my country's economic development has continuously increased the demand for high-value petroleum products. At present, the market's requirements for light, high-quality and clean petroleum products are in contradiction with the increasingly heavy and low-quality crude oil supply. exacerbated. Therefore, developing technologies for efficient conversion of heavy oil and increasing the yield of light oil will still be a major development strategy for my country's oil refining industry in the 21st century. At present, the average yield of light oil in my country's refineries is 74%, while the foreign advanced level is above 80%, and there is still a lot of room for improvement. [0003] Catalytic cracking technology is one of the most effective technologies for converting i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/00
Inventor 李强常学良鲁维民王瑾杨克勇
Owner CHINA PETROLEUM & CHEM CORP
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