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A kind of diesel oil liquid phase hydrogenation method

A liquid-phase hydrogenation and diesel oil technology, which is applied in the fields of hydrogenation treatment process, petroleum industry, and treatment of hydrocarbon oil, etc.

Active Publication Date: 2014-10-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the existing hydrofining reaction process, the present invention provides an improved liquid-phase circulating hydrogenation process

Method used

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  • A kind of diesel oil liquid phase hydrogenation method

Examples

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Embodiment 1~4

[0024] Embodiment 1~4 adopts the present invention figure 1 process shown. The composition and properties of catalysts used in the following examples are shown in Table 1. The raw material properties used are shown in Table 2, and the process conditions used in Examples 1 to 4 are listed in Table 3. The evaluation results of Examples 1 to 4 are shown in Table 4.

[0025] Table 1 Composition and main properties of catalysts

[0026] project catalyst Chemical composition, mass% MoO 3 6.2 NiO 12.3 WO 3 15.2 carrier Aluminum oxide physical properties Pore ​​volume, mL / g 0.45 Specific surface area, m 2 / g 201

[0027] Table 2 Properties of raw oil

[0028] project Raw oil Density (20℃), g / cm 3 0.8532 Distillation range, ℃ 199～368 Sulfur content, μg / g 8800 Nitrogen content, μg / g 316 Aromatic content, wt % 21

[0029] Table 3 The operating conditions used in Ex...

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Abstract

The invention discloses a diesel oil liquid phase hydrogenation method. The fresh diesel feed enters the liquid-phase hydrogenation reactor for hydrogenation refining reaction after being mixed with hydrogen in the hydrogen mixing tank. A part of the liquid phase is recycled to the hydrogen mixing tank, mixed with fresh feed and then enters the hydrogen mixing tank for hydrogen mixing, and the other part of the liquid phase is mixed with the flash gas phase and then separated to obtain a diesel product. The hydrogenation effluent is flashed, and most of the hydrogen sulfide is flashed off. At the same time, the light fraction of refined diesel oil is also separated. On the one hand, the content of hydrogen sulfide in the heavy fraction is reduced, and the cyclic enrichment of hydrogen sulfide is avoided, which is beneficial to The deep desulfurization reaction of diesel oil is carried out; on the other hand, the amount of liquid circulation is reduced, and the investment and operating energy consumption of circulation pumps are reduced.

Description

technical field [0001] The invention relates to a hydrocarbon hydrogenation treatment method, in particular to a diesel liquid phase hydrogenation method suitable for producing ultra-low sulfur diesel oil. Background technique [0002] With the improvement of people's awareness of environmental protection and the increasingly stringent environmental regulations, the production and use of clean vehicle fuels has increasingly become a development trend. The development of deep hydrodesulfurization technology for diesel oil has become a hot research topic at present. Compared with the production of conventional low-sulfur diesel, the production of ultra-low-sulfur diesel is more difficult. The difficulty is mainly reflected in the dibenzothiophene compounds in the diesel fraction, especially the dibenzothiophene sulfides with substituents at positions 4 and 6. remove. Due to the presence of substituents at the 4 and 6 positions, the hydrodesulfurization reaction is difficult ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/00
Inventor 柳伟李士才刘继华李扬宋永一牛世坤徐大海丁贺
Owner CHINA PETROLEUM & CHEM CORP
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