Liquefied petroleum gas-coke gasoline hydrogenation combined process method

A technology for liquefied petroleum gas and coking gasoline, applied in the field of combined processes, can solve the problems of high content of dilute hydrocarbons in hydrocoking gasoline, difficult to achieve the quality of raw materials for catalytic reforming and steam cracking, and can reduce reaction temperature and reduce catalyst carbon deposition. , the effect of increasing the conversion rate

Active Publication Date: 2012-01-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Aiming at the deficiencies in the prior art, the present invention provides a 4 The combined process of distillate and coker gasoline hydrotreating, the inventive method has solved C on the one hand 4 The stability of the distillate hydrogenation proces

Method used

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  • Liquefied petroleum gas-coke gasoline hydrogenation combined process method
  • Liquefied petroleum gas-coke gasoline hydrogenation combined process method
  • Liquefied petroleum gas-coke gasoline hydrogenation combined process method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～8

[0049] Take 100ml of FH-40C catalyst and put it into a stainless steel reactor with an inner diameter of 25mm and a length of 1200mm. Reaction raw materials: hydrogen is electrolytically purified hydrogen with a purity of >99%; the C4 fraction is obtained from Fushun Petroleum No. The reaction is upper feed, the reaction material flows out from the bottom of the reactor, and enters the separator after cooling, the tail gas is discharged from the top of the separator, the liquid phase at the bottom is regularly sampled, and the composition is analyzed by gas chromatography. The specific reaction conditions and results are listed in Table 7 .

[0050] Table 6 Main properties of hydrocoking gasoline feedstock

[0051]

[0052] Table 7 Experimental conditions and results

[0053]

[0054] From the data in Table 7, it can be seen that the mixed feed method of liquefied petroleum gas and coker gasoline can not only hydrogenate the two materials at the same time, but also gre...

Embodiment 9

[0056] The stability experiment of the scheme of the present invention, concrete reaction condition and result are listed in Table 8.

[0057] Table 8 Experimental conditions and results

[0058]

[0059] As can be seen from the data in Table 8, when the catalyst activity stability experiment was finished, the catalyst had been operated for 800 hours, and the catalyst still had good activity, indicating that the process of the present invention had better activity and stability.

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Abstract

The invention discloses a liquefied petroleum gas-coke gasoline hydrogenation combined process method, which comprises the following contents: coke gasoline undergoes a hydrogenation reaction in a coke gasoline hydrogenation reaction stage; the efflux of the coke gasoline hydrogenation reaction stage is mixed with the liquefied petroleum gas to enter a liquefied petroleum gas hydrogenation reaction stage; and the reaction efflux of the liquefied petroleum gas hydrogenation reaction stage is subjected to separation to obtain hydrogenated liquefied petroleum gas and hydrogenated coke gasoline. Compared with the prior art, the method disclosed by the invention is favorable for dissipation of reaction heat, lowers reaction temperature, reduces the influences of temperature on reaction balance and improves conversion rate; and the method reduces carbon accumulation of the catalyst, prolongs the single-pass service life of the catalyst and can obtain high-quality hydrogenated coke gasoline and hydrogenated liquefied petroleum gas at the same time.

Description

technical field [0001] The invention relates to a hydrogenation treatment process, more specifically, a combined process organically combining two processes of liquefied petroleum gas hydrogenation treatment and coker gasoline hydrogenation treatment. Background technique [0002] As crude oil becomes heavier and its processing depth increases, delayed coking, as one of the main processes in heavy oil processing, plays an important role. Due to the high content of unsaturated hydrocarbons and colloids, as well as high content of impurities such as sulfur and nitrogen, the coked gasoline obtained by the delayed coking process is corrosive and poor in stability, which limits its application. Coked gasoline must be hydrorefined before it can be used as a gasoline blending component, catalytic reforming raw material or cracking ethylene raw material. [0003] With the development of oil refining industry, especially the continuous improvement of catalytic cracking technology, p...

Claims

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Application Information

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IPC IPC(8): C10G65/02C10G45/08
Inventor 方向晨乔凯艾抚宾刘继华郭蓉徐彤
Owner CHINA PETROLEUM & CHEM CORP
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