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Preparation method of hydro-treatment catalyst

A hydrotreating and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. together, the adverse effects of catalyst activity, etc., to achieve the effect of increasing permeability, increasing sulfidation degree and sulfidation uniformity, and increasing effective diffusion coefficient

Active Publication Date: 2014-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the preparation process of the above catalyst, organic additives are added to the impregnating liquid to increase the viscosity of the impregnating liquid, which is not conducive to the dispersion of active metals on the surface of the carrier, and the catalyst particles after impregnation are easy to stick together, and there is a group phenomenon. There is metal precipitation on the surface of the catalyst, which affects the high dispersion of active components on the surface of the carrier and adversely affects the activity of the catalyst

Method used

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  • Preparation method of hydro-treatment catalyst
  • Preparation method of hydro-treatment catalyst
  • Preparation method of hydro-treatment catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Prepare the catalyst precursor by adopting silicon-modified pseudo-boehmite dry rubber powder, take by weighing 200 grams of the above dry rubber powder, 100 grams of SB powder, add each 4 grams of astragalus powder and citric acid, add acidic solution after mixing, The concentration of nitric acid in the acidic solution is 2wt%, and the rest is distilled water. Roll for 15-25 minutes, extrude with a clover orifice plate with a diameter of 1.7mm, dry at 120°C for 12 hours, and roast at 550°C for 3 hours to obtain a catalyst carrier, namely Z-1, whose properties are as follows: the pore volume is 0.72 ml / g, the specific surface area is 342m 2 / g.

Embodiment 2

[0041] Weigh an appropriate amount of carrier Z-1, impregnate the carrier Z-1 with an impregnation solution containing Mo, Ni, P, and asparagine in equal volumes, and the composition of the impregnation solution is MoO 3 The content of NiO is 88.5g / 100ml, the content of NiO is 15 g / 100ml, the content of P is 2.3g / 100ml, the amount of asparagine is 13.2g / 100ml, wherein the amount of asparagine is related to the moles of Ni atoms in the final catalyst The ratio is 0.5:1. The ultrasonic impregnation method was used for impregnation, the power of the ultrasonic wave was 15W / ml, the frequency was 50kHZ, the temperature was 45°C, and the time was 20min. After impregnation, it was aged at room temperature for 10 hours, and dried for 3 hours at 115°C in an air atmosphere to obtain the catalyst C- 1.

Embodiment 3

[0043] Weigh an appropriate amount of catalyst carrier Z-1, use an impregnation solution containing Mo, Ni, P, 2-amino-1,3 propanediol, the composition of the impregnation solution is MoO 3 The content of NiO is 89.5g / 100ml, the content of NiO is 15 g / 100ml, the content of P is 2.5g / 100ml, the amount of 2-amino-1,3 propanediol is 14.58g / 100ml, of which 2-amino-1,3 propanediol The molar ratio of the amount of Ni to the Ni content in the final catalyst is 0.8:1. The ultrasonic impregnation method was used for impregnation, the power of the ultrasonic wave was 15W / ml, the frequency was 50kHZ, the temperature was 45°C, and the time was 30min. After impregnation, it was aged at room temperature for 10 hours, and dried for 3 hours in an air atmosphere at 120°C to obtain the catalyst C- 2.

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Abstract

The invention discloses a preparation method of a hydro-treatment catalyst. The preparation method comprises the following steps: preparing an alumina carrier, preparing an impregnation solution containing the VIII group metal and VIB group metal, wherein the impregnation solution comprises a proper amount of an organic auxiliary agent containing chelating ligand, then impregnating the alumina carrier into the impregnation solution under a proper ultrasonic treatment condition, and drying so as to obtain the hydro-treatment catalyst. The preparation method utilizes the ultrasonic cavitation effect to properly reduce the viscosity of the impregnation solution; at the same time the complexing capacity between the chelating ligand in the organic auxiliary agent and nickel / cobalt is improved by the catalytic function of the ultrasonic, the interaction force between the chelating ligand and nickel / cobalt is strengthened, thus the active metal component is promoted to highly disperse on the carrier surface, furthermore, the existing state of the active metal on the catalyst surface is improved at the same time, the sulfurization degree and sulfurization uniformity of the active metal are both improved, so the activity and stability of the catalyst are both improved. The catalyst is especially suitable for being used in the hydro-denitrogenation process and hydro-desulfurization process of heavy distillate oil.

Description

technical field [0001] The invention relates to a preparation method of a hydrogenation treatment catalyst, in particular to a preparation method of a hydrogenation treatment catalyst suitable for heavy distillate oil hydrodenitrogenation and desulfurization processes. Background technique [0002] The content of impurities such as nitrogen, sulfur, oxygen and metals in crude oil is constantly increasing, and the degree of crude oil is becoming heavier. It has become a fact before people. The existence of these impurities not only poisons the catalyst in the subsequent treatment process, but also emits A large amount of harmful gases such as sulfur oxides and nitrogen oxides are released, endangering human health and environmental protection. The use of catalysts with high activity and good stability can not only ease the process conditions, but also reduce hydrogen consumption and achieve energy saving and consumption reduction. [0003] The hydrotreating process is to l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J23/888B01J23/882C10G45/08
Inventor 唐兆吉杨占林王继锋曾榕辉姜艳
Owner CHINA PETROLEUM & CHEM CORP
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