Method for producing light fuel oil by hydrogenating anthracene oil

A technology for light fuel oil and anthracene oil, which is used in hydrotreating process, petroleum industry, treatment of hydrocarbon oil, etc., can solve the problem of restricting the application of anthracene oil hydrocracking process, high requirements for hydrocracking catalyst, and affecting the service life of catalyst. and other problems, to achieve the effect of long-term safe production, safe and stable operation, and saving equipment investment.

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

AI Technical Summary

Problems solved by technology

However, the above two methods use anthracene oil as the raw material, a large amount of heat will be released during the hydrofining process, and there are problems such as large temperature rise of the device and unstable operation, and it is easy to cause coking of the catalyst, which affects the service life of the catalyst.
Moreover, the nitrogen content in the resulting refined oil is less than 400 μg / g, which requires the selection of a hydrocracking catalyst with strong nitrogen tolerance, which not only has high requirements for the hydrocracking catalyst, but also limits the application of the anthracene oil hydrocracking process

Method used

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  • Method for producing light fuel oil by hydrogenating anthracene oil
  • Method for producing light fuel oil by hydrogenating anthracene oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0034] The properties of the anthracene oil raw materials used are shown in Table 1. The embodiment adopts a two-stage hydrocracking process, and the specific operation process is shown in figure 1 .

[0035] Preparation of hydrocracking catalysts containing amorphous silica-alumina and Y zeolite: A1, A2.

[0036] Hydrocracking catalyst A1:

[0037] Amorphous silicon aluminum (specific surface 520m 2 / g, SiO 2 35wt%, pore volume 1.2ml / g) and Y molecular sieve (SiO 2 / Al 2 o 3 9, unit cell constant 2.432, specific surface 650m 2 / g, infrared acidity 0.45mmol / g), after mixing, add the adhesive (prepared by peptizing small-pore alumina with a pore volume of 0.42ml / g and dilute nitric acid) and roll it into a ball, then put it into the extruder After extruding, dry at 110°C for 10 hours, activate at 500°C for 4 hours to prepare the carrier, then impregnate with Mo-Ni co-impregnation solution, then dry at 110°C for 12 hours, and activate at 500°C for 3 hours. The final co...

Embodiment 1

[0045] Examples 1-3 The liquid phase product obtained after the hydrofinishing oil passes through the separation system is recycled back to the hydrofinishing reaction zone and mixed with anthracene oil. The circulation weight ratio of Examples 1 and 2 is 3.0, and the circulation of Example 3 The weight ratio is 2.0.

[0046] Table 1 Raw Oil Properties

[0047] crude oil name

[0048] Table 2 Hydrogenation process conditions and properties of diesel fraction products

[0049] Program

[0050] Nitrogen content of oil produced by hydrofining / μg·g -1

[0051] Yield, % (mass fraction)

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Abstract

The invention discloses a method for producing light fuel oil by hydrogenating anthracene oil. The method comprises the following steps of: hydrogenating and refining anthracene oil; carrying out liquid and gas separation, wherein an obtained liquid product is partially circulated back to a hydrogenating and refining reaction region to be mixed with the anthracene oil, and a residual part is led to a hydrogenating and cracking reaction region; and separating an obtained hydrogenating and cracking product to obtain gasoline and diesel oil fractions. The method is favorable for reducing the temperature rise, reducing the equipment investment and improving the operation safety and the stability of the device, and meanwhile, because the concentrations of colloid and asphalt in raw materials are reduced, the running period of the device can be prolonged.

Description

technical field [0001] The invention relates to a hydrogenation method for anthracene oil, in particular to a method for producing light fuel oil by processing anthracene oil with a two-stage hydrocracking process. 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 use coal as raw material to produce clean fuel. [0003] Anthracene oil is one of the fractions obtained by distillation of high-temperature coal tar. Its initial boiling point is 220-260°C, and its final boiling point is 500-550°C. It has a relatively heavy distillation range and belongs to the heavy fraction range. Anthracene oil is mainly a mixture of compounds such as anthracene, phenanthrene, carbazole, and acenaphthene, mostly aromatic hydrocarbons with three rings and four rings or more, and the density (20°C) is greater than 1.0g / m ...

Claims

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Application Information

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IPC IPC(8): C10G65/12
Inventor 许杰关明华王立言
Owner CHINA PETROLEUM & CHEM CORP
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