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Method for producing lightweight fuel oil by hydrogenation of deep drawn anthracene oil

A technology for light fuel oil and deep-drawn 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 and the activity and stability of the hydrogenation catalyst are unfavorable. , can not process deep-drawn anthracene oil and other problems, to achieve long-term safe production, save equipment investment, and long-term beneficial effects

Active Publication Date: 2014-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 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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  • Method for producing lightweight fuel oil by hydrogenation of deep drawn anthracene oil
  • Method for producing lightweight fuel oil by hydrogenation of deep drawn anthracene oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0056] See Table 2 for the properties of the used deep-pichanthrene oil raw materials. The flow chart used in the embodiment is shown in Figure 1.

[0057] Table 2 Raw Oil Properties

[0058] crude oil name

Deep anthracene oil

Distillation range / ℃

IBP / 10%

203 / 324

30％ / 50％

345 / 380

70％ / 90％

407 / 492

95% / EBP

550 / 648

Density(20℃) / g·cm -3

1.15

S / μg·g -1

5500

N / μg·g -1

13200

four components * ,% (mass fraction)

Saturation

0.1

Aroma

72.09

colloid

23.31

Asphaltenes

4.5

[0059] * The four components are determined by SH / T 0509-1992 standard method.

[0060] In the example, two reactors are used in the hydrofinishing reaction zone. The first reactor is filled with hydrogenation protection agents FZC-100, FZC-102B, and FZC-103 sequentially from top to bottom, and the second reactor is filled with...

Embodiment 4

[0062] After the hydrofinishing product oil obtained in Example 1 is separated from the gas and liquid by the separation system, the obtained liquid phase product is recycled back to the hydrofinishing reaction zone with a circulation weight ratio of 3.0, and the remaining part enters the hydrocracking reaction zone, and is sequentially processed through the hydrocracking reaction zone. The volume ratio of hydrofinishing catalyst 3936, hydrodecarbonization catalyst, hydrocracking catalyst A1 and aftertreatment hydrofinishing catalyst FF-26 is 40:15:40:5.

Embodiment 5

[0064] The hydrorefining product oil obtained in Example 1 was replaced with the hydrorefining product oil obtained in Example 2, the circulation weight ratio was 2.0, the hydrocracking catalyst was changed to A2, and the rest were the same as in Example 4.

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Abstract

The present invention provides a method for producing lightweight fuel oil by hydrogenation of deep drawn anthracene oil. The method comprises the following steps: hydrofinishing deep drawn anthracene oil; returning part of the liquid phase products obtained by gas-liquid separation to the hydrofinishing reaction zone and mixing with anthracene oil; adding the residual products into a hydrocracking reaction zone, conducting contact reaction with hydrobon catalysts, hydrogenation charcoal-removing catalysts and hydracracking catalysts successively; separating the obtained hydrocracking products; to obtain the fractions of gasoline and diesel oil. The method not only can process deep drawn anthracene oil, broadens the scope of raw materials; but also can maximize the conversion of deep drawing anthracene oil, thereby, improves the yield of lightweight fuel oil, raises the added value of anthracene oil, effectively protects the activity of hydrocracking catalysts simultaneously, and guarantees the long-time cycle running of a device. Furthermore, adopting the mode of portion cycle is favorable to reducing temperature rise, reducing equipment investment and enhancing safety and smoothness of device operation; simultaneously, reduction of the concentration of colloid and asphalt is in favor of prolongation of the running period of the device.

Description

technical field [0001] The invention relates to a method for hydrogenating deep carbinthrene oil, in particular to a method for hydrogenating deep carbinthrene oil to produce clean light fuel oil. Background technique [0002] 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 value, asphalt components are currently only used as electrodes and carbon raw materials. The economy is slightly worse (see "Development and Utilization of Coal Tar Pitch and Its Prospect", "Entrepreneur's World" No. 8, 2007). At present, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G65/12
Inventor 许杰关明华
Owner CHINA PETROLEUM & CHEM CORP
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