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Method for hydrodesulfurization of diesel

A technology for hydrodesulfurization and diesel oil, which is applied in the fields of hydrotreating process, petroleum industry, and hydrocarbon oil treatment, etc. It can solve the problem that the diesel hydrogenation catalyst cannot exert its activity.

Active Publication Date: 2012-01-11
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Therefore, if the catalyst is loaded according to strict limits, the diesel hydrogenation catalyst cannot exert the best activity

Method used

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  • Method for hydrodesulfurization of diesel

Examples

Experimental program
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Embodiment 1～4

[0018] Embodiment 1~4 and comparative example 1~4 adopt flow process of the present invention as figure 1 .

[0019] In the embodiment 1-4, the hydrogenation reactor is filled with gradient mixing. The reactor includes five mixed catalyst beds with equal loading volumes. According to the order of contact with the reaction materials (i.e. from top to bottom), each mixed catalyst The volume ratios of catalyst A and catalyst B in the bed are 1:5, 1:3, 1:1, 3:1, 5:1 respectively.

[0020] The composition and properties of the catalyst in the examples are shown in Table 1, the properties of the raw materials used are shown in Table 2, and the reaction conditions and reaction results of Examples 1-4 are shown in Table 3 and Table 4 below.

[0021] Composition and main properties of the catalyst used in the embodiment of table 1

[0022] project

Catalyst A

Catalyst B

Chemical composition, mass%

MoO 3

20.2

19.8

NiO

12.3 ...

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Abstract

The invention discloses a method for hydrodesulfurization of diesel with graded filling of a catalyst. The method is to pass the mixture of diesel and hydrogen through mixed catalyst bed layers consisting of a Mo-Co catalyst and Mo-Ni catalyst under conditions of a hydrogenation refining process, wherein at least two mixed catalyst bed layers are provided, and according to the sequence of the contact between the catalyst and reaction materials, the ratio of the Mo-Ni catalyst to the mixed catalyst beds increases gradually. In the method for hydrodesulfurization of diesel, through mixed filling of the Mo-Co catalyst and the Mo-Ni catalyst with different ratio gradients, the action of the Mo-Co catalyst and the action of the Mo-Ni catalyst can be played in a coordinated manner, so that the diesel hydrodesulfurization reaction can be promoted.

Description

technical field [0001] The invention relates to a method for hydrogenation desulfurization of diesel oil, in particular to a method for hydrogenation desulfurization of diesel oil with gradient mixing and loading of catalysts. 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. As for the cleanliness of diesel oil, desulfurization and dearomatization are the key to cleanliness. [0003] At present, in the desulfurization and dearomatization technologies of diesel oil, hydrotreating technology is still the main and most effective technical means. Catalysts play a vital role in the hydroprocessing of distillate oils. There are many kinds of hydrotreating catalysts, which can be divided into Mo-Co type catalysts, W-Ni type catalysts and Mo-Ni type catalysts according to the classif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/08C10G65/04
Inventor 柳伟
Owner CHINA PETROLEUM & CHEM CORP
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