Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of hydrogenation treatment catalyst and preparation method thereof

A hydrogenation treatment and catalyst technology, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of metal deposition, pollution, and cost increase, and achieve simple preparation process and desulfurization Improve denitrification activity and prevent pollution

Active Publication Date: 2016-02-10
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 0 Cited by
  • 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
[0005] Hydrotreating catalysts mostly use γ-Al 2 o 3 As a carrier, its isoelectric point is 7-9, and the pH value of the commonly used Mo, Ni(Co), and P impregnation solutions is mostly <2, which is much lower than the isoelectric point of the carrier, which makes the active components in the impregnation solution and If the carrier interaction is too strong, it will have a significant impact on the activity of the catalyst, and if the pH value is too small, the specific surface area of ​​the carrier will be lost during the impregnation process.
However, if the pH value of the acidic impregnation solution is too high, metals will be deposited on the surface of the carrier during impregnation, and the active components in the catalyst will not be uniformly dispersed, which will affect the performance of the catalyst.
[0006] At present, the hydrotreating catalysts prepared by different methods do not solve the above shortcomings well, and the performance of hydrotreating catalysts, especially the improvement in activity, is limited.
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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] To the prepared metal impregnation solution 1 (MoO 3 89.2g / 100ml, NiO 15.0g / 100ml, P 2.5g / 100ml) add dimethylhydrazine NH 2 N(CH 3 ) 2 , the amount added is 40% of the mass of the metal impregnating solution. Take the carrier Z1 in the comparative example, impregnate it with the prepared solution for 2 hours, dry it at 100°C for 4 hours, and then reductively activate it under a hydrogen atmosphere. The reductive activation procedure is as follows: Raise from room temperature to 450°C at 5°C / min, from 450°C to 500°C at a heating rate of 2°C / min, and keep at 500°C for 2 hours to prepare catalyst C-1 of the present invention.

Embodiment 2

[0037] To the prepared metal impregnation solution 2 (MoO 3 83.1g / 100ml, NiO 15.6g / 100ml, P 1.94g / 100ml) add dimethylhydrazine NH 2 N(CH 3 ) 2 , the amount added is 35% of the mass of the metal impregnating solution. Take the carrier Z2 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. First, use 10 °C / min was raised from room temperature to 350 °C, at a rate of 1 °C / min, from 350 °C to 500 °C, and kept at 500 °C for 4 hours to prepare catalyst C-2.

Embodiment 3

[0039] To the prepared metal impregnation solution 3 (MoO 3 39.0g / 100ml, NiO 6.5g / 100ml, P 1.1g / 100ml) add dimethylhydrazine NH 2 N(CH 3 ) 2 , the amount added is 45% of the mass of the metal impregnating solution. Take the carrier Z3 in the comparative example, impregnate it with the prepared solution for 3 hours, dry it at 100°C for 4 hours, and then perform activation treatment under a hydrogen atmosphere. / min from room temperature to 450°C, at a rate of 1°C / min, from 450°C to 650°C, and kept at 650°C for 4 hours to prepare catalyst C-3.

[0040] The main character of the catalyst prepared by above-mentioned comparative example and embodiment is shown in Table 1

[0041] Table 1

[0042] catalyst C-1 C-2 C-3 BC1 BC2 BC3 Specific surface area, m 2 / g 225 210 208 196 184 180 Total pore volume, ml / g 0.42 0.41 0.39 0.39 0.37 0.36 Average pore size, nm 8.0 8.0 8.1 8.0 8.0 8.0 Mo,% 13.99 13.95 13.89 12.86 13.47 1...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a hydrogenation catalyst. The method comprises the following processes: (1) preparing a conventional active metal impregnation solution; (2) adding a hydrazine derivative into the solution obtained in the step (1); (3) impregnating an alumina carrier or an alumina carrier containing an auxiliary agent with the impregnation solution containing hydrazine derivative obtained in the step (2) and then drying; and (4) activating the materials obtained in the step (3) with hydrogen to obtain the final hydrogenation catalyst after activation. The active metal is selected from metals of group VIII and group VI B in the periodic table. Suitable base metals of group VIB include molybdenum, tungsten, chromium or a mixture thereof, and preferably molybdenum, tungsten or a mixture thereof. Suitable base metals of group VIII include cobalt, nickel, iron, or a mixture thereof, and preferably cobalt, nickel or a mixture thereof. The catalyst has the advantages of simple preparation process, high desulfurization and denitrification activity, does not require vulcanization treatment before usage.

Description

technical field [0001] The invention relates to a hydrogenation treatment catalyst and a preparation method thereof, in particular to a heavy distillate oil hydrogenation treatment 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 alk...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(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