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Preparation method of heavy oil hydrotreating catalyst

A technology for hydrotreating and heavy oil, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., which can solve problems such as cumbersome process and increased control difficulty

Active Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of this method is cumbersome, and there is a risk of increased difficulty in control during the second impregnation operation

Method used

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  • Preparation method of heavy oil hydrotreating catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Weigh 100 g of a clover-shaped commercially available alumina carrier, numbered A-0, and measure its water absorption η to be 1.15. The alumina particle diameter is 2.0mm, and the average pore diameter is 26.3nm. Weigh 12g of molybdenum trioxide (containing 99wt% molybdenum oxide), 4.6g of basic nickel carbonate (containing 52wt% of nickel oxide), 3.5g of phosphoric acid solution (containing 26.7wt% of phosphorus), add clean water and dissolve at room temperature for 20 minutes , add 5.0 g of citric acid and 1.0 g of 1,2,3,4-butanetetracarboxylic acid, continue to dissolve for 30 minutes, then start heating and boiling until all the raw materials are dissolved. Cool to room temperature after 60 minutes at constant temperature. Slowly add surfactant Tween-60 weight 3.5g to the above solution, after the foam in the solution is completely eliminated, set the volume to 115mL for use. The above impregnation solution was impregnated on the carrier A-0 by spraying to obtain ...

Embodiment 2

[0026] Weigh 100 g of a clover-shaped commercially available alumina carrier, numbered A-0, and measure its water absorption η to be 1.15. The alumina particle diameter is 2.0mm, and the average pore diameter is 26.3nm. Weigh 12g of molybdenum trioxide (containing 99wt% molybdenum oxide), 6g of basic nickel carbonate (containing 52wt% of nickel oxide), 10g of phosphoric acid solution (containing 26.7wt% of phosphorus), add clean water to dissolve at room temperature for 25 minutes, add 1.5 g of citric acid and 2.0 g of 1,2,3,4-butanetetracarboxylic acid continued to dissolve for 20 minutes, then began to heat up and boil until all the raw materials were dissolved. Cool to room temperature after 60 minutes at constant temperature. Slowly add surfactant Tween-80 weight 3.5g to the above solution, after the foam in the solution is completely eliminated, set the volume to 120mL for use. The above impregnation solution was impregnated on the carrier A-0 by spraying to obtain A-2....

Embodiment 3

[0028] Weigh 100 g of a clover-shaped commercially available alumina carrier, numbered A-0, and measure its water absorption η to be 1.15. The alumina particle diameter is 2.0mm, and the average pore diameter is 26.3nm. The alumina particle diameter is 2.0mm, and the average pore diameter is 26.3nm. Weigh 12g of molybdenum trioxide (containing 99wt% molybdenum oxide), 4.6g of basic nickel carbonate (containing 52wt% of nickel oxide), 3.5g of phosphoric acid solution (containing 26.7wt% of phosphorus), add clean water and dissolve at room temperature for 20 minutes After adding 6.0 g of citric acid and 6.0 g of 1,2,3,4-butanetetracarboxylic acid and continuing to dissolve for 40 minutes, start to heat up and boil until the raw materials are completely dissolved. Cool to room temperature after 70 minutes at constant temperature. Slowly add surfactant Tween-60 weight 3.5g to the above solution, after the foam in the solution is completely eliminated, set the volume to 120mL for...

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Abstract

The invention provides a preparation method of a heavy oil hydrotreating catalyst. The method comprises the following steps: preparing an aqueous solution containing a surfactant, 1, 2, 3, 4-butanetetracarboxylic acid, citric acid and at least one active metal as an impregnation liquid; preparing an alumina carrier; impregnating an alumina carrier with the impregnation liquid to load an active metal component, and drying and roasting to obtain the heavy oil hydrotreating catalyst. The input amounts of the 1, 2, 3, 4-butanetetracarboxylic acid and the citric acid enable the concentrations of the 1, 2, 3, 4-butanetetracarboxylic acid and the citric acid in the impregnation liquid to be 2-120g / L, and the input mass ratio of the 1, 2, 3, 4-butanetetracarboxylic acid to the citric acid is 4: 1-1: 8. The preparation process is simple, environment-friendly and safe, and other existing operations do not need to be changed. The active metal utilization rate and the catalyst particle utilization rate can be improved, and the demetallization capacity of the catalyst is improved.

Description

technical field [0001] The invention relates to a heavy oil hydrogenation catalyst and a preparation method thereof, in particular to a method for improving the demetallization capacity of a heavy oil hydrogenation demetallization catalyst. [0002] technical background [0003] Hydrogenation reaction is usually a heterogeneous reaction with gas, liquid and solid. Most of the catalysts are supported, that is, the active components are loaded on the carrier according to a certain method, and finally the catalyst is obtained. The physical and chemical properties of catalysts vary according to the raw materials being processed. Including appearance shape, pore structure, active metal composition, etc. In order to give full play to the role of catalyst active components, researchers usually design the distribution of active components according to the actual needs of the reaction, including uniform type, eggshell type, egg yolk type, etc. In some reactions where the diffusion s...

Claims

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Application Information

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IPC IPC(8): B01J27/188B01J35/10B01J37/02C10G45/08
CPCB01J27/188B01J37/0203B01J37/082C10G45/08C10G2300/205B01J35/615B01J35/635
Inventor 王志武张成关月明袁胜华王永林王欣刘文洁蒋淑娇韩易潼
Owner CHINA PETROLEUM & CHEM CORP