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Treatment method for bad-quality raw oil

A technology of inferior raw material oil and treatment method, which is applied in the treatment of hydrocarbon oil, hydrotreating process, petroleum industry, etc., can solve the problems of short catalyst life and high chemical hydrogen consumption, and achieve reduction of chemical hydrogen consumption, increase yield, increase The effect of economic benefits

Active Publication Date: 2017-04-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, none of the above existing technologies has solved the problems of short catalyst life and high chemical hydrogen consumption in residual oil hydrogenation units.

Method used

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  • Treatment method for bad-quality raw oil

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Experimental program
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Effect test

Embodiment 1

[0060] Embodiment 1 provides the controllable shallow hydrogenation reaction of the present invention, wherein the reaction temperature and volume space velocity are adjusted stepwise with the reaction time, while the hydrogen-oil volume ratio and hydrogen partial pressure are maintained at 800 standard cubic meters / cubic meter and 12 MPa, see Table 2 for specific operating conditions. Among the residue hydrogenation products, the cut point of hydrogenated residue is 350°C. The life of the residual oil hydrogenation catalyst is correlated with the amount of metal deposited on the catalyst (MOC, the amount of nickel and vanadium deposited on the catalyst per 100kg), and the MOC is inversely proportional to the catalyst life. The comparison between the impurity removal rate of the device and MOC is shown in Table 2.

Embodiment 2

[0065] Such as figure 1 As shown, the reaction product produced within 5000-5500 hours of operation of the hydrogenation unit in Example 1 was selected as the experimental object of the subsequent process (see Table 3 for specific properties of the product after the shallow hydrogenation reaction). The hydrogenated residual oil is used as the raw material oil of the first catalytic cracking unit, and after the first catalytic cracking reaction, separation and fractionation, the first dry gas, the first liquefied gas, the first gasoline, the first diesel oil and the first wax oil are obtained. The first wax oil cut point is 330°C, accounting for 35.23% of the feed amount. The first wax oil is subjected to hydrogenation treatment of wax oil. After the product is separated from gas and liquid, the liquid-phase hydrogenated wax oil enters the second catalytic cracking reactor, and after the second catalytic cracking reaction, the second dry gas and the second liquefied gas are obt...

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Abstract

The invention discloses a treatment method for bad-quality raw oil. The method includes the steps that 1, the bad-quality raw oil is subjected to a superficial hydrogenation reaction, so that gas, hydrogenated naphtha, hydrogenated diesel oil and hydrogenated residual oil are obtained, wherein with the bad-quality raw oil being a standard, the productivity of the hydrogenated residual oil is controlled to be 85-95 wt%; b, the obtained hydrogenated residual oil in the step a is subjected to a first catalytic cracking reaction, so that first dry gas, first liquefied gas, first gasoline, first diesel oil and first wax oil are obtained; c, the first wax oil obtained in the step b is subjected to a hydrogenation reaction of wax oil, so that hydrogenated wax oil is obtained; d, the hydrogenated wax oil obtained in the step C is subjected to a second catalytic cracking reaction, so that second dry gas, second liquefied gas, second gasoline, second diesel oil and second wax oil are obtained. Compared with the prior art, the method can prolong the running period of a hydrogenation device for the bad-quality raw oil and lower chemical hydrogen consumption.

Description

technical field [0001] The invention relates to a method for processing inferior raw material oil. Background technique [0002] As the demand for crude oil in the world continues to rise, the heavy and inferior quality of crude oil resources is becoming more and more obvious. At the same time, the global oil product demand structure is also changing. The consumption of boiler and marine heavy fuel oil is decreasing year by year, while the demand for chemical light oil and high-quality vehicle fuel oil is increasing year by year. Therefore, converting more low-quality oil into high-quality light oil has become an important direction for the development of world oil refining technology. Although the development of residual oil catalytic cracking technology can effectively process low-quality feedstock oil, it not only increases the The processing difficulty and operating cost of the catalytic cracking unit, and there are outstanding problems such as low yield of light oil, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/04
Inventor 蓝天王新
Owner CHINA PETROLEUM & CHEM CORP
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