Method for preparing hydro-demetalization catalyst

A hydrodemetallization and catalyst technology, applied in the direction of metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve carrier distribution dispersion, poor mechanical strength, preparation process Complexity and other issues, to achieve high activity and activity stability, improve activity stability, and simple preparation process

Active Publication Date: 2012-05-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When purely using physical pore-enlarging agent to prepare alumina carrier, in order to achieve the ideal pore-enlarging effect, the amount of pore-enlarging agent is often large, and the carrier has the disadvantages of dispersed, non-concentrated pore distribution, and poor mechanical strength.
The pure use of chemical pore expanders will make the peptization of pseudo-boehmite worse, which will bring difficulties to the extrusion molding operation
In addition, when a large amount of chemical pore expander is used, the pore distribution of the carrier will be more diffuse.
Simultaneous use of physical pore-enlarging agent and chemical pore-enlarging agent can exert the synergistic effect of the two pore-enlarging agents, reduce their respective dosages, and overcome certain negative effects, but the preparation process is more complicated, and the addition of the two pore-enlarging agents is relatively It is difficult to achieve ideal matching. In addition, the concentration of the pore distribution of the carrier needs to be further improved

Method used

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  • Method for preparing hydro-demetalization catalyst
  • Method for preparing hydro-demetalization catalyst

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] Weigh 30 g of the first pseudo-boehmite dry rubber powder (produced by Shenyang Catalyst Factory, with an alumina dry basis content of 65%) with a pore volume of 0.5 to 0.8 ml / g, and the second one with a pore volume of 0.85 to 1.5 ml / g. A kind of pseudo-boehmite dry rubber powder (produced by Shandong Qilu Petrochemical Company, with an alumina dry basis content of 70%) 70g is mixed evenly, and 1.5g concentration of 65% by weight is added to the above-mentioned mixed pseudo-boehmite dry rubber powder. Nitric acid, 2g of safflower powder and 75g of deionized water are fully kneaded, extruded into a clover-shaped strip with a diameter of 1.8mm on a screw extruder, dried at 120°C for 3 hours, and the dried shaped product is roasted at a temperature of 700°C After 3 hours, an alumina support was obtained. Weigh 100 grams of the above-mentioned alumina carrier, add 150ml Mo-Ni-NH 3 solution (with MoO 3 12.0 wt%, NiO3.0 wt%) impregnated for 2 hours, filtered off excess sol...

example 2

[0027]With example 1, just the first kind of pseudo-boehmite dry rubber powder (production of Shenyang Catalyst Factory, alumina dry basis content 65%) charging amount is 5g, the second kind of pseudo-boehmite dry rubber powder (Shandong Qilu Petroleum Co., Ltd. Produced by a chemical company, with an alumina dry basis content of 70%), the feed amount is 95g, and the dry catalyst is roasted for 3 hours in a mixed atmosphere with a water vapor content of 50V% at 650°C to obtain the hydrodemetallization catalyst C2 of the present invention.

example 3

[0029] With example 1, just the first kind of pseudo-boehmite dry rubber powder (production of Shenyang Catalyst Factory, alumina dry basis content 65%) charging amount is 50g, the second kind of pseudo-boehmite dry rubber powder (Shandong Qilu Petroleum Co., Ltd. Produced by a chemical company, with an alumina dry basis content of 70%), the feed amount is 50g, and the dry catalyst is roasted for 3 hours in a mixed atmosphere with a water vapor content of 40V% at 550°C to obtain the hydrodemetallization catalyst C3 of the present invention.

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Abstract

The invention discloses a method for preparing a hydro-demetalization catalyst, which comprises the following steps of: (1) weighing two kinds of pseudoboehmite dry colloidal powder with different natures, evenly mixing, adding an extrusion aid, then, carrying out peptization, forming, drying, and roasting to prepare an alumina carrier; (2) preparing a dipping solution from a VIB metallic compound and/or a VIII metallic compound; and (3) dipping the alumina carrier prepared in the step (1) by using the dipping solution prepared in the step (2), drying an obtained wet catalyst, and then, roasting the catalyst in water-vapor-contained atmosphere to prepare the final catalyst. With the adoption of the method disclosed by the invention, the hydro-demetalization catalyst with a large pore diameter, large pore volume and concentrated pore distribution can be prepared under the condition of not using a pore-expanding agent.

Description

technical field [0001] The invention relates to a preparation method of a hydrodemetallization catalyst. Background technique [0002] With the continuous reduction of oil resources and the increasing trend of heavy and inferior crude oil, heavy oil deep processing technology has been highly valued by refiners at home and abroad. In the process of heavy oil processing (residual oil hydrocracking, hydrodesulfurization, etc.), metal-organic compounds will decompose, metal elements will be deposited on the inner and outer surfaces of the catalyst, and even further block the pores of the catalyst, resulting in rapid catalyst activity. decline. Therefore, in the hydrotreating of heavy oil and residual oil, it is necessary to use a demetallization catalyst with large pore size and large pore volume in order to protect the catalyst from loss of activity due to a large amount of metal deposition. Al 2 o 3 or SoO 2 -Al 2 o 3 As a carrier, it supports active components of group...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J35/10C10G45/08
Inventor 季洪海沈智奇凌凤香王少军杨卫亚王丽华郭长友
Owner CHINA PETROLEUM & CHEM CORP
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