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VB group metal-containing heavy oil hydrodemetallization catalyst, preparation method thereof and heavy oil hydrotreating method

A heavy oil hydrogenation and catalyst technology, which is applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem that the performance of heavy oil hydrotreating needs to be further improved, and achieve excellent heavy oil hydrodehydration. The effect of metal properties

Pending Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the heavy oil hydrotreating performance of the catalyst obtained by the carrier obtained by the method provided by the prior art still needs to be further improved

Method used

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  • VB group metal-containing heavy oil hydrodemetallization catalyst, preparation method thereof and heavy oil hydrotreating method
  • VB group metal-containing heavy oil hydrodemetallization catalyst, preparation method thereof and heavy oil hydrotreating method
  • VB group metal-containing heavy oil hydrodemetallization catalyst, preparation method thereof and heavy oil hydrotreating method

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Experimental program
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preparation example Construction

[0027] The present invention also provides a method for preparing a heavy oil hydrodemetallization catalyst, comprising the steps of preparing a phosphorous-containing alumina carrier and introducing a Group VB metal and a Group VIB metal into the carrier, wherein the Group VB metal and the Group VIB metal The amount used is such that in the finally obtained catalyst, the metal content of Group VB in terms of oxides is not higher than 12% by weight, and the content of Group VIB metals is 0.2-12% by weight; wherein, the preparation of the phosphorus-containing alumina carrier Proceed as follows:

[0028] (1) Carry out a gelation reaction under the conditions of the simultaneous presence of an aluminum-containing compound and a phosphorus-containing compound to obtain a slurry containing phosphorus-containing alumina hydrate, and the phosphorus-containing compound makes the final carrier, with P 2 o 5 The calculated phosphorus content is 0.1-8.0% by weight;

[0029] (2) adjust...

Embodiment approach

[0033] According to a preferred embodiment of the present invention, the amount of the Group VB metal and the Group VIB metal is such that in the finally obtained catalyst, the content of the Group VB metal in terms of oxide is 0.2-8% by weight, and the Group VIB metal is The metal content is 2-10% by weight.

[0034]The present invention has no particular limitation on the specific implementation and method of the step of introducing the VB group metal and the VIB group metal into the carrier, preferably, the method of introducing the VB group metal and the VIB group metal into the carrier For impregnation. Specifically, it includes preparing a solution containing a hydrogenation active metal (group VB metal and / or group VIB metal) compound and impregnating the support with the solution, followed by drying and optional calcination. The Group VB metal and the Group VIB metal may be introduced into the support sequentially (step-by-step impregnation), or jointly introduced int...

preparation example 1

[0085] (1) Preparation of Al 2 o 3 Concentration is 2L of aluminum sulfate solution of 50g / L, add 5mL concentrated phosphoric acid (concentration 85% by weight, the same below), 9.5g boric acid, obtain the aluminum sulfate solution containing phosphorus, boron element. In a 5-liter reaction tank, the above-mentioned aluminum sulfate solution and an 8% ammonia solution were added in parallel for reaction and precipitation, and then filtered (using XRD to characterize the hydrated aluminum oxide precipitation as an amorphous structure), the reaction temperature was 40 ° C, Control the flow rate of the ammonia solution to make the pH of the reaction system 5.5. In a 5-liter reaction tank, filter cake, deionized water and ammonia water are mixed and beaten. The amount of ammonia water is used to make the pH value of the slurry 8.0. The slurry is aged at 65°C for 60 minutes and filtered, and the filter cake is beaten with deionized water. After washing twice, the filter cake was ...

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Abstract

The invention relates to the field of heavy oil hydrodemetallization catalysts, and discloses a VB group metal-containing heavy oil hydrodemetallization catalyst, a preparation method thereof and a heavy oil hydrotreating method. The catalyst contains a phosphorus-containing alumina carrier with a bimodal pore structure, and a group VB metal and a group VIB metal which are loaded on the carrier, the content of the group VB metal is not higher than 12% by weight and the content of the group VIB metal is 0.2-12% by weight based on the total amount of the catalyst and in terms of oxide, and the content of phosphorus in the carrier in terms of P2O5 is 0.1-8.0% by weight; wherein the carrier is characterized by a mercury intrusion method, the first pore distribution of the carrier is mesopores with a pore volume V mesopores of 1.0-1.5 mL / g, the second pore distribution of the carrier is macropores with a pore volume V macropores of 1.0-1.8 mL / g, and the total pore volume V total is 2.0-3.3 mL / g. The heavy oil hydrodemetallization catalyst provided by the invention is applied to a heavy oil hydrotreating process and has relatively high demetallization activity and deasphaltene activity.

Description

technical field [0001] The invention relates to a heavy oil hydrodemetallization catalyst, more specifically to a heavy oil hydrodemetallization catalyst containing Group VB metals, a preparation method thereof and a heavy oil hydrotreating method. Background technique [0002] At present, the trend of heavy and inferior crude oil is intensifying, crude oil treatment is more difficult, and the yield of light oil products is lowered. However, the market demand for high-quality light oil products is increasing, and environmental protection regulations are becoming more and more stringent. . At present, the processing and full utilization of heavy oil, especially residual oil, is becoming a major topic of concern in the global oil refining industry, and residual oil hydrogenation technology is a widely used processing technology in heavy oil processing technology, and is recognized as an economical and environmentally friendly deep processing technology . Residual oil contain...

Claims

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Application Information

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IPC IPC(8): B01J27/199B01J35/10B01J37/20C10G45/04
CPCB01J27/199B01J37/20C10G45/04C10G2300/205C10G2300/206B01J35/638B01J35/653B01J35/657B01J35/651B01J35/69B01J35/647Y02P20/52
Inventor 孙淑玲杨清河胡大为曾双亲户安鹏王振邓中活
Owner CHINA PETROLEUM & CHEM CORP
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