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A metal trapping agent, its preparation method and application, and a catalytic cracking method

A technology of metal trapping agent and catalytic cracking, which is applied in the field of metal trapping agent, can solve the problems that the catalytic cracking unit cannot be implemented and the process is complicated, and achieve the effects of improving metal trapping capacity, low cost, and increasing the yield of liquid products

Active Publication Date: 2015-11-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Despite the above advantages, the process is complex and cannot be implemented in conventional catalytic cracking units

Method used

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  • A metal trapping agent, its preparation method and application, and a catalytic cracking method
  • A metal trapping agent, its preparation method and application, and a catalytic cracking method
  • A metal trapping agent, its preparation method and application, and a catalytic cracking method

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Embodiment approach

[0029] According to a preferred embodiment of the present invention, the present invention provides a kind of preparation method of metal trapping agent, and this method comprises:

[0030] (1) mixing and pulping aluminum hydroxide and / or aluminum oxide, deionized water and acid to obtain the first slurry;

[0031] (2) contacting the first slurry with magnesium hydroxide and / or magnesium oxide to obtain a second slurry, and spray drying the second slurry to obtain a solid;

[0032] (3) The solid is contacted with a water-soluble magnesium source solution, and the contacted mixture is dried or not dried before roasting.

[0033] The metal collector prepared according to the aforementioned preparation method of the present invention not only has a bulk density within the above-mentioned range, but also has high liquid product yield, low dry gas and coke when it is used for catalytic cracking of heavy oil with high metal (such as vanadium) content Yield and other advantages.

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Embodiment 1

[0066] This example is used to illustrate the preparation process of the metal scavenger provided by the present invention.

[0067] (1) Pseudoboehmite 280g (as Al 2 o 3 meter) into deionized water, after uniform dispersion, hydrochloric acid was added, and the first slurry was obtained after contacting for 30 minutes, the solid content of the first slurry was 15% by weight, and the pH was 1.2;

[0068] (2) Then add deionized water-dispersed MgO slurry (containing MgO640g), the temperature is controlled at 55°C, and the second slurry is obtained after contacting for 60 minutes. The solid content of the second slurry is 28% by weight and the pH value is 9.8; The second slurry is spray-dried to obtain solid microspheres, wherein the microspheres with a particle diameter within the range of 0-149 microns account for 92% by volume, and the microspheres with a particle diameter within the range of 0-40 microns account for 20% by volume, The average particle size (APS) of microsph...

Embodiment 2-10

[0071] Examples 2-10 are used to illustrate the preparation process of the metal-scavenging agent provided by the present invention.

[0072] Metal scavengers A2-A10 were prepared according to the method of Example 1, except that the formula, preparation parameters, bulk density and wear index are listed in Table 1.

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Abstract

The invention provides a metal chelating agent, and a preparation method and an application thereof. The bulk density of the metal chelating agent is 0.85-1.2g / cm<3>. The invention provides a catalytic cracking method. The catalytic cracking method comprises a step that a heavy oil raw material contacts with a catalyst mixture containing the metal chelating agent and a catalytic cracking catalyst under catalytic cracking conditions. The metal chelating agent has a very good metal chelating effect, for example, the metal chelating agent can alleviate the destroys of vanadium to a cracking catalyst, improve the yields of liquid products and reduce the yields of dry gas and coke when the metal chelating agent is used in the catalytic cracking of high-vanadium heavy oil.

Description

technical field [0001] The invention relates to a metal trapping agent, a preparation method of the metal trapping agent, an application of the metal trapping agent in catalytic cracking, and a catalytic cracking method. Background technique [0002] The continuous rise of crude oil prices has greatly increased the processing costs of refineries. At present, catalytic cracking is an important means of heavy oil processing in refineries. In order to reduce costs and maximize benefits, heavy oil can be processed through deep processing and low-quality oil. to fulfill. [0003] However, low-quality crude oils are generally higher in heavy metals such as vanadium. The vanadium-containing compounds in petroleum are a kind of very complex metal complexes, which generally exist in the form of porphyrinic vanadium and non-porphyrinic vanadium. The boiling point of metalloporphyrin is generally between 565-650°C, and it is mainly concentrated in residual oil, but because of its str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/10
Inventor 陈蓓艳朱玉霞沈宁元蒋文斌黄志青任飞宋海涛
Owner CHINA PETROLEUM & CHEM CORP
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