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Preparation method of hydrogenation demetallization catalyst

A hydrodemetallization and catalyst technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of heavy oil processing process being greatly affected, shorten the preparation cycle and simplify the preparation process , the effect of convenient operation

Inactive Publication Date: 2013-11-27
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the metals in crude oil exist in residual oil. Although the content of metals (mainly nickel and vanadium) in residual oil is relatively low, it has a great influence on the processing of heavy oil.

Method used

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  • Preparation method of hydrogenation demetallization catalyst
  • Preparation method of hydrogenation demetallization catalyst
  • Preparation method of hydrogenation demetallization catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Weigh 98g of aluminum chloride hexahydrate in a beaker, add 100mL of deionized water, stir in a constant temperature water bath at 80°C until completely dissolved, add 1.85g of ammonium molybdate and 1.9g of basic nickel carbonate successively under stirring , after completely dissolving, add 300g of urea, add ammonium carbonate gradually under stirring until gelatinous, the dosage is 52g, aging at 25°C for 12h, drying at 80°C for 12h, and calcining at 500°C for 3h in a muffle furnace to obtain the catalyst. Gained supported hydrodemetallization catalyst contains NiO 5.0%, MoO 3 7.5%, and the resulting catalyst was labeled A-1. See Table 1 for additive addition and hydrodemetallization activity, see Table 2 for the physical properties of the prepared catalyst, and see Table 2 for the X-ray powder diffraction spectrum. figure 1 .

Embodiment 2

[0018] Embodiment 2: Similar to Embodiment 1, the difference is that the urea is changed to 350g, the ammonium carbonate consumption is still 520g, and the resulting catalyst is marked as A-2. See Table 1 for additive addition and hydrodemetallization activity, see Table 2 for the physical properties of the prepared catalyst, and see Table 2 for the X-ray powder diffraction spectrum. figure 1 .

Embodiment 3

[0019] Embodiment 3: similar to Example 1, the difference is that the urea is changed to 400g, the ammonium carbonate consumption is 470g, and the resulting catalyst is marked as A-3. See Table 1 for additive addition and hydrodemetallization activity, see Table 2 for the physical properties of the prepared catalyst, and see Table 2 for the X-ray powder diffraction spectrum. figure 1 .

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Abstract

The invention provides a preparation method of a hydrogenation demetallization catalyst, relates to a catalyst, and provides a preparation method of the hydrogenation demetallization catalyst, which is simple in preparing process, short in preparing period short and higher hydrogenation demetallization activity of prepared catalyst. The hydrogenation demetallization catalyst is prepared by the steps of: dissolving aluminum chloride hexahydrate grains in water, and then sequentially adding ammonium molybdate and basic nickel carbonate to obtain a solution A; then adding urea to the solution A for dissolving to obtain a solution B; adding ammonium carbonate to the solution B to generate gel; and aging the gel, drying and calcining.

Description

technical field [0001] The invention relates to a catalyst, in particular to a preparation method of a hydrodemetallization catalyst using a one-step method. Background technique [0002] With the increasing shortage of petroleum resources and the heavy crude oil, the hydrotreating technology of residual oil has been paid more and more attention. Most of the metals in crude oil exist in residual oil. Although the content of metals (mainly nickel and vanadium, etc.) in residual oil is low, it has a great influence on the processing of heavy oil. In the process of catalytic hydrogenation of residual oil, vanadium and nickel are deposited on the catalyst in the form of sulfides. These deposits not only block the pores of the catalyst, prevent the reaction materials from approaching its active center, but also contaminate its active phase, resulting in rapid hydrogenation of the catalyst. Inactivate. Therefore, the main task of hydrodemetallization of residual oil is to remove...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/883B01J35/10C10G45/08
Inventor 方维平李娟娟赖伟坤郑进保王跃敏
Owner XIAMEN UNIV
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