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Distillate oil hydrogenation catalyst and preparation method thereof

A hydrogenation catalyst and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of difficult impregnation operation, unstable solution, easy to cause pollution, etc., and achieve simple preparation process , avoid pollution, increase the effect of hydrodesulfurization and denitrification activity

Active Publication Date: 2014-05-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN93109141.1 pointed out that when the solution used contains ammonia solution of molybdenum and cobalt (nickel) at the same time, the impregnating solution is alkaline. If it is to be impregnated into a catalyst at one time, it needs to be formulated with a high concentration of molybdenum-cobalt (nickel)-ammonia solution, which is unstable and makes impregnation difficult
[0006] At present, hydrotreating catalysts prepared by different methods do not solve the above shortcomings well, and the performance of hydrotreating catalysts still needs to be further improved
The above-mentioned hydrogenation catalyst needs to be subjected to normal vulcanization treatment before use, and the active metal is converted into a vulcanized state. The vulcanization process not only increases the cost, but also easily causes pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Prepare dimethylhydrazine NH with a weight concentration of 30% 2 N(CH 3 ) 2 Solution, take the catalyst BC1 in the comparative example, impregnate it with the prepared solution for 2 hours, dry at 100°C for 4 hours, and then reductively activate it under a hydrogen atmosphere. The reductive activation procedure is to rise from room temperature to 450 °C, at a heating rate of 2 °C / min, from 450 °C to 500 °C, and kept at 500 °C for 2 hours to prepare the catalyst C-1 of the present invention.

Embodiment 2

[0038] Prepare dimethylhydrazine NH with a weight concentration of 60% 2 N(CH 3 ) 2 Solution, take the catalyst BC2 in the comparative example, impregnate it with the prepared solution for 2 hours, dry it at 100°C for 4 hours, and then perform hydrogen activation under a hydrogen atmosphere, firstly from room temperature to 350°C at 10°C / min , at a heating rate of 1°C / min, from 350°C to 500°C, and kept at 500°C for 4 hours to prepare transition metal nitride catalyst C-2.

Embodiment 3

[0040] Prepare dimethylhydrazine NH with a weight concentration of 40% 2 N(CH 3 ) 2 Solution, take the catalyst BC3 in the comparative example, impregnate it with the prepared solution for 2 hours, dry at 100°C for 4 hours, and then perform activation treatment under a hydrogen atmosphere. The transition metal nitride catalyst C-3 was prepared by raising the temperature from 450°C to 650°C at a rate of 1°C / min and keeping the temperature at 650°C for 4 hours.

[0041] The main character of the catalyst prepared by above-mentioned comparative example and embodiment is shown in Table 1

[0042] catalyst C1 C2 C3 BC1 BC2 BC3 Specific surface area, m 2 / g 228 200 202 196 184 180 Total pore volume, mL / g 0.39 0.40 0.41 0.39 0.37 0.36 Average pore size, nm 8.0 8.0 8.1 8.0 8.0 8.0 Mo,% 13.95 13.97 13.87 12.86 13.47 13.37 Ni,% 2.76 2.78 2.70 2.61 2.62 2.68 Si,% 1.01 1.04 1.05 0.98 1.02 1.06 B,% ...

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Abstract

The invention discloses a distillate oil hydrogenation catalyst. In terms of the weight of the oxide of an active metal component, the catalyst contains 9 to 30% of the active metal MoO3 and 2 to 10% of a group-VIII metal oxide, wherein group-VIII metal is Ni and / or Co. The hydrogenation catalyst is prepared by dipping an active component-loaded alumina carrier in a solution containing a hydrazine derivative and then carrying out hydrogen activation. A preparation method for the distillate oil hydrogenation catalyst comprises the following steps: (1) dipping the alumina carrier or alumina carrier containing an auxiliary agent by using a conventional active metal dipping solution and then carrying out drying and roasting; (2) preparing the solution containing the hydrazine derivative, dipping the material obtained in the step (1) and carrying out drying; and (3) subjecting the material obtained in the step (2) to hydrogen activation so as to obtain the finished hydrotreatment catalyst. The catalyst is easy to prepare, does not need sulfuration before usage, is applicable to hydrotreatment of heavy distillate oil and has high denitrification and desulphurization activity.

Description

technical field [0001] The invention relates to a distillate oil hydrogenation catalyst and a preparation method thereof, in particular to a heavy distillate oil hydrogenation catalyst and a preparation method thereof. Background technique [0002] Most supported catalysts are prepared by impregnation method, such as various hydrogenation catalysts. When the hydrogenation catalyst is prepared by the impregnation method, the pH value of the impregnation solution has a great influence on the structure and dispersion of the active metal (such as Mo) on the surface of the catalyst and its interaction with the carrier (such as Al 2 o 3 ) interactions have a great influence. The increase of the pH value can reduce the loss of the specific surface area of ​​the carrier during the impregnation process and increase the specific surface area of ​​the catalyst. [0003] Generally speaking, there are two types of impregnation solutions for hydrogenation catalysts: one is the alkaline...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C10G45/08
Inventor 姜虹杨占林王继锋唐兆吉魏登凌温德荣
Owner CHINA PETROLEUM & CHEM CORP
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