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Preparation method of hydrodemetallization catalyst

A technology for hydrodemetallization and catalyst, which is applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, chemical instruments and methods, etc., to achieve the effects of increased content, increased service life, and reduced acidity

Active Publication Date: 2019-04-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pore structure of the carrier prepared by this method is also not suitable for the field of heavy and residual oil hydrodemetallization

Method used

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  • Preparation method of hydrodemetallization catalyst
  • Preparation method of hydrodemetallization catalyst
  • Preparation method of hydrodemetallization catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take by weighing 25 grams of carbon black powder and place it in a spray-soaked rolling pan, and in a rotating state, spray and immerse the carbon black powder in the rolling pan in an unsaturated ethanol containing 2 grams of silicon dioxide in an unsaturated spraying manner. Solution 7.5ml. The impregnated carbon black powder is fully mixed with 150 grams of pseudoboehmite (produced by Wenzhou Jingjing Alumina Factory, with an alumina dry basis content of 65%) and 2 g of scallop powder, and an appropriate amount of 2 g of acetic acid is added to the above materials The aqueous solution is kneaded evenly and extruded into strips. The molded wet material was dried at 110°C for 8 hours. The dried material is placed in a tube furnace, and nitrogen is introduced into the tube furnace to fill the entire furnace with nitrogen, roasted at 400°C for 6 hours, then vented with nitrogen and fed into air, and roasted at 500°C for 6 hours to obtain silicon-containing oxide Alumin...

Embodiment 2

[0025] With embodiment 1, difference: the add-on of carbon black powder is 20 grams, what used when spraying and soaking carbon black powder is the ethanol solution of the methyl orthosilicate of 7ml containing silicon dioxide 3 grams. The calcination temperature under nitrogen atmosphere was 350°C. Catalyst C2 was prepared, and the properties of the catalyst are shown in Table 1.

Embodiment 3

[0027] With embodiment 1, difference: the add-on of carbon black powder is 35 grams, what used when spraying and soaking carbon black powder is the ethanol solution of 14ml containing the butyl orthosilicate of silicon dioxide 5 grams, the roasting under nitrogen atmosphere The temperature is 450°C. Catalyst C3 was prepared, and the properties of the catalyst are shown in Table 1.

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Abstract

The invention discloses a hydrogenation and metal removing catalyst preparation method, which comprises: (1) impregnating a physical pore expanding agent by using a silicon-containing solution, carrying out mixing kneading on the physical pore expanding agent, pseudo-boehmite, an auxiliary extrusion agent and a glue solvent after the impregnating to form a plastic body, extruding strips, drying, calcining the dried material in a nitrogen atmosphere, and then calcining in an air atmosphere to produce a silica-containing alumina carrier; and (2) impregnating the carrier by using a hydrogenation activity component impregnating liquid, drying the material, and calcining to prepare the hydrogenation and metal removing catalyst. According to the present invention, the catalyst prepared through the method has advantages of high mechanical strength, suitable pore structure, high catalytic activity, and high activity stability.

Description

technical field [0001] The invention relates to a preparation method of a hydrodemetallization catalyst. Background technique [0002] With the increasing requirements for deep processing of raw materials worldwide, the main energy structure is gradually developing in the direction of macromolecules and high carbon, especially for my country where crude oil is generally heavy. In order to effectively solve the problems of excessive diffusion resistance of heavy oil components in the catalyst pores, heavy metal impurity deposition and coking caused by catalyst activity decline or deactivation, it is urgently required that the alumina carrier widely used in the petrochemical industry has a large pore volume and The characteristic of large aperture. The large pore size is conducive to the diffusion of macromolecular compounds into the catalyst particles, and the large pore volume is conducive to improving the ability to accommodate metals or coke. [0003] US4448896 discloses...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/883B01J35/10C10G45/08
CPCB01J23/002B01J23/883B01J35/1019B01J35/1042B01J35/108B01J37/0018B01J2523/00C10G45/08C10G2300/205B01J2523/31B01J2523/41B01J2523/68B01J2523/847
Inventor 季洪海王少军凌凤香沈智奇杨卫亚王丽华郭长友
Owner CHINA PETROLEUM & CHEM CORP
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