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Inferior distillate oil combination hydrogenation modified method

A technology for hydrotreating and upgrading distillate oil, which is applied in the fields of hydrotreating process, petroleum industry, gasoline stabilization, etc., can solve the problems that distillate oil such as diesel cannot meet product quality requirements and is unfavorable for product quality, save equipment and improve product quality. Product quality and low operating costs

Active Publication Date: 2008-04-23
CHINA PETROLEUM & CHEM CORP +1
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  • Claims
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AI Technical Summary

Problems solved by technology

[0008] In petroleum processing enterprises, catalytic cracking and coking are the two most important heavy oil lightening processes with the largest processing volume. The quality of distillate oil such as diesel oil obtained by the two processes cannot meet the product quality requirements. The diesel fraction obtained in the process is usually processed in a mixed manner, or mixed with other sources of diesel raw materials (such as straight-run diesel oil, etc.). Although the mixed processing has the advantage of simple process, it is not conducive to comprehensively improving product quality.

Method used

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  • Inferior distillate oil combination hydrogenation modified method
  • Inferior distillate oil combination hydrogenation modified method

Examples

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preparation example Construction

[0037] According to the preparation process of the HT-A catalyst, according to the component content ratio of the catalyst HT-B in Table 1, add aluminum chloride, nickel chloride, sodium tungstate in the reaction tank, then add 16% ammonia water to form a gel, until The pH value is 9, the gelling temperature is 80°C, aging for 3 hours after gelling, and then filtering, the filter cake is washed twice with 500mL clean water, added clean water and molybdenum trioxide, beaten and stirred evenly, filtered, the filter cake is at 70 Dry at ℃ for 7 hours, then extrude, wash with clean water twice, dry at 100℃ for 8 hours, and calcined at 550℃ for 3 hours to obtain the final catalyst HT-B. The composition and main properties are shown in Table 1.

[0038] Table 1 Composition and main properties of highly active hydrotreating catalysts

[0039] Catalyst number

[0040] The preparation process of the involved hydrogenation upgrading catalyst HC is as follows:

[0041] Take by...

Embodiment 5

[0047] Embodiment 5 according to figure 2 Process operation, referring to the conditions described in Example 3, the catalytic cracking diesel feedstock is fractionated into heavy fraction and light fraction at 210°C, the heavy fraction is subjected to hydro-upgrading, and the light fraction is mixed with coking distillate oil for hydrofining.

[0048] Table 3 Hydro-upgrading operating conditions and results

[0049] serial number

[0050] Table 4 Hydrofining operating conditions and results

[0051] serial number

[0052] Table 5 embodiment gained product properties

[0053] serial number

[0054] It can be seen from the above examples that the biggest feature of this combined process is that it rationally utilizes the respective characteristics of the hydroupgrading process and the hydrofining process, while maintaining a high yield of diesel fraction, it not only greatly reduces the The content of sulfur, nitrogen and other impurities and a...

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Abstract

The combined inferior distillate oil hydrogenating modification process includes hydrogenation modifying catalytically cracked diesel oil fraction material, hydrogenation refining pyrolytic distillate oil material, and separating the reaction effluent from both hydrogenation modifying and hydrogenation refining in a common separating system. The hydrogenating process of the present invention has high diesel oil yield, and is simple and low in cost, and the hydrogenated product has low content of S, P and other impurities and greatly raised cetane number. The process is suitable for hydrogenating of different types of inferior distillate oil material.

Description

technical field [0001] The invention relates to a combined upgrading method of low-quality distillate oil, in particular to a combined method for improving secondary processing of distillate oil, especially low-quality distillate oil such as catalytic cracking diesel oil, coking diesel oil, and coking gasoline and diesel oil. Background technique [0002] At present, international and domestic crude oil has shown a trend of heavy and inferior crude oil, and the range of oil fields involved is becoming more and more extensive. In addition, the continuous development of the world economy and the increasingly stringent environmental protection regulations require the production of a large amount of light clean fuels. All of these require the perfection and improvement of the existing oil refining technology to produce products that meet the requirements at the lowest cost. Due to the poor quality of raw materials, not only the quality of straight-run diesel oil will deteriorate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/12C10G7/02
Inventor 曾榕辉方向晨关明华赵玉琢刘涛
Owner CHINA PETROLEUM & CHEM CORP
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