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Hydroconversion method of deep cut anthracene oil

A technology for hydroconversion and deep extraction of anthracene oil, which is applied in the directions of hydrotreating process, petroleum industry, treatment of hydrocarbon oil, etc., can solve the problem that it is difficult for the nitrogen content of heavy fractions to meet the feed requirements, the activity and stability of the hydrogenation catalyst are unfavorable, and the Affect the operation cycle of the device and other problems, and achieve the effects of safe and stable operation, improved yield, and improved utilization.

Active Publication Date: 2011-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] CN101024780A uses conventional anthracene oil as raw material to produce high-quality diesel oil. It adopts a series process of hydrofinishing-hydrocracking. The ammonia and water generated in the process of hydrofinishing have adverse effects on the activity and stability of subsequent hydrogenation catalysts, affecting the device operating cycle, can not process deep dipanthracene oil
CN101033409A refines and produces oil with a nitrogen content of <400 μg / g, and CN1676583A tail oil directly enters the hydrocracking reactor. These two methods have the same problem: the nitrogen-containing compounds that are difficult to remove are concentrated in the heavy fraction as the hydrocracking feed In the conventional hydrotreating catalyst and hydrogenation conditions, it is difficult to make the nitrogen content in the heavy fraction meet the feed requirements of hydrocracking
These two methods can not process deep dipanthracene oil

Method used

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  • Hydroconversion method of deep cut anthracene oil
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  • Hydroconversion method of deep cut anthracene oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0048] See Table 2 and Table 4 for the properties of the light and heavy fractions of the deep carbinthrene oil used. Embodiment flow chart is shown in Fig. 1. The hydrofinishing reaction zone adopts two reactors, the first reactor is equipped with hydrogenation protection agent FZC-103, and the second reactor is equipped with hydrofinishing catalyst 3936. In the embodiment, the volume ratio of FZC-103 and 3936 is as follows: 15: 85. The results of the reaction are shown in Table 3.

[0049] Table 2 Properties of the light distillate of deep dianthrene oil

[0050] crude oil name

Light distillates of deep carbinthrene oil (<430°C)

Distillation range / ℃

IBP / 10%

200 / 224

30％ / 50％

260 / 320

70％ / 90％

367 / 392

95% / EBP

410 / 441

Density(20℃) / g·cm -3

1.01

[0051] S / μg·g -1

5300

N / μg·g -1

12000

Four components*, % (mass fraction)

Saturation

0.57

...

Embodiment 4

[0058] The mixed oil I enters the hydroconversion reaction zone, wherein the volume ratio of the hydroprotection catalyst, the hydrofinishing catalyst, the hydrodecarbonization catalyst and the hydroconversion catalyst is 8:30:35:27, wherein the hydroprotection catalyst used The catalysts are FZC-100 and FZC-102B, the volume ratio is 1:2, the hydrofining catalyst is 3936, and the loading volume ratio of the hydrogenation carbon removal catalyst HDC-1 and HDC-2 is 4:6, and the hydrogenation Conversion catalyst such as the catalyst obtained in Example 1 of CN02109422.5 is denoted as ZH1. The loading sequence of the above catalysts is as follows: FZC-100, FZC-102B, 3936, HDC-1, HDC-2, ZH1. Its properties are shown in Table 5.

[0059]Table 5 Composition and properties of hydroconversion catalyst

[0060]

[0061] In this example, the process conditions of the hydroconversion reaction zone are as follows: the reaction pressure is 16MPa, the reaction temperature is 390-400°C, ...

Embodiment 5

[0063] Compared with Example 4, the raw material was changed to mixed oil II, and the loading volume ratio of the used hydrodecarbonization catalyst HDC-1 and HDC-2 was changed to 5:5, and the rest were the same as in Example 4. The reaction results are shown in Table 6. The hydroconverted product is fractionated into the first fraction (called hydrocracking feedstock II) and the second fraction, with a cut point of 500°C.

[0064] Table 6 Heavy fraction hydrotreating results

[0065]

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Abstract

The invention provides a hydroconversion method of deep cut anthracene oil. The method comprises the following steps of: fractionating deep cut anthracene oil into a light fraction and a heavy fraction, then separating the light fraction after hydrofining, refining the liquid phase which is obtained during the separating process to generate an oil, infusing the oil and the heavy fraction into the hydroconversion region and then separating the heavy fraction from the oil which is generated during the hydroconversion process, wherein the first fraction which is light is entered into the hydrocracking region, and the cracked product which is obtained during the hydrocracking process is infused into the fractionation system to obtain gasoline and diesel fractions. The hydroconversion method of deep cut anthracene oil provided by the invention has the advantages that the deep cut anthracene oil is inversed into light fuel oil by means of hydroconversion, an application way with high additional value is provided to coal tar, the operation of the device is stable by optimizing the process, and the running period of the device is long.

Description

technical field [0001] The invention relates to a method for hydrogenation of anthracene oil, in particular to a method for hydrogenation of deep anthracene oil into light fuel oil. Background technique [0002] The increasing scarcity of the world's petroleum resources has made the technology of processing various unconventional petroleum resources to produce light fuel oil a hot topic, one of which is to produce clean fuels from coal-based raw materials. [0003] Coal tar is a by-product of coking technology, and anthracene oil is one of its distillation products. Generally, the fraction at 300-360°C is called I anthracene oil, the fraction at 360-500°C is called II anthracene oil, and the fraction above 500°C belongs to asphalt components. In recent years, coal tar hydrogenation has attracted much attention in the coal chemical industry. The dry point of hydrogenation raw materials is generally less than 500-550°C. As a processing raw material that needs to increase added...

Claims

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Application Information

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IPC IPC(8): C10G65/12
Inventor 许杰
Owner CHINA PETROLEUM & CHEM CORP
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