Residual oil hydrodemetallization method

A technology of hydrodemetallization and residual oil hydrogenation, which is applied in the fields of hydroprocessing, petroleum industry, and hydrocarbon oil treatment, and can solve the problems of complex process, difficult industrialization, and high viscosity

Active Publication Date: 2020-07-07

CHINA PETROLEUM & CHEM CORP +1

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AI-Extracted Technical Summary

Problems solved by technology

This method processes ethylene tar separately. Due to the high density and high viscosity of the heavy fraction, the requirements for the hydrogenation unit and supporting equipment are increased, and another fractionation tower is ...

Method used

Visible by the investigation of table 8 long-term running cycle, adopt the residual oil hydrotreating method of embodiment 5 to obtain unexpected reaction effect, through 3000 hours stable operation, sulfur content is 4518 μ g/g in the hydrogenated heavy oil , the ...

Abstract

The invention discloses a residual oil hydrodemetallization method. According to the method, raw materials comprise a residual oil raw material, hydrogen and a material viscosity adjusting auxiliary agent, wherein the material viscosity adjusting auxiliary agent comprises ethylene tar, and the fed materials are subjected to a hydrotreatment reaction in a hydrodemetallization reaction zone to obtain a hydrogenation effluent; and the hydrodemetallization reaction zone is filled with at least one hydrodemetallization catalyst and at least one hydrogenation protective agent. According to the method disclosed by the invention, the ethylene tar is added into the residual oil raw material as a material viscosity adjusting aid, so that the system viscosity under the reaction condition can be effectively reduced, the hydrodemetallization of the residual oil is promoted, and the improvement of the reaction performances such as subsequent desulfurization, and carbon residue removal and the like is facilitated through the synergistic effect of all the components under the hydrodemetallization reaction condition.

Application Domain

Treatment with hydrotreatment processesRefining to eliminate hetero atoms

Technology Topic

Process engineeringMetal catalyst +8

Image

Examples

Experimental program(5)
Comparison scheme(8)
Effect test(1)

Example Embodiment

[0054] Example 1

[0055] The method of this example is basically the same as that of Comparative Example 1, but the differences are: using ethylene tar A to replace part of the residue raw material A (see Table 3) and using part of the hydroprotectant to replace part of the hydrodemetalization catalyst (see Table 2) . Among them, the process conditions are shown in Table 3, and the fixed bed hydrogenation results are shown in Table 4. Under different operating times, the viscosity of the hydrogenation effluent, the removal rate of metal Ni and V, and the removal rate of sulfur are shown in Figure 1-3.

Example Embodiment

[0056] Example 2

[0057] This example is basically the same as Example 1, but the difference is: the feed of this example uses residual oil raw material B, ethylene tar B, heavy cycle oil and different catalyst grading methods. The process conditions are shown in Table 3, and the catalyst grading is shown in Table 2. See Table 4 for the fixed bed hydrogenation results.

Example Embodiment

[0058] Example 3

[0059] This example is basically the same as Example 1, but the difference is that the feed of this example uses residual oil raw material A and ethylene tar B and different catalyst grading methods. The process conditions are shown in Table 3, and the catalyst grading is shown in Table 2. The results of bed hydrogenation are shown in Table 4.

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Description & Claims & Application Information

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