Teeth spherical heavy oil hydrotreating catalyst and preparation method thereof

A hydrotreating and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of poor hydrodenitrogenation activity, small specific surface area, The problem of high reaction temperature, to achieve the effect of good effect, high specific surface area and low reaction temperature

Active Publication Date: 2009-08-05
BEIJING GAOXIN LIHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, heavy oil hydrotreating catalysts mostly use γ-Al 2 o 3 As a carrier, the shape is cylindrical, clover-shaped, etc., and has defects such as small specific surface area, small pore size, and low st

Method used

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  • Teeth spherical heavy oil hydrotreating catalyst and preparation method thereof
  • Teeth spherical heavy oil hydrotreating catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] plan 1

[0032] (1) Preparation of toothed spherical alumina carrier precursor

[0033] 200g of commercial aluminum hydroxide produced by the nitric acid method, 60g of commercial aluminum hydroxide produced by the carbonization method, 10g of scallop powder, 10g of sodium polyacrylate and 13g of citric acid powder, after mixing and grinding for 30min with a mixer, add 80g of deionized water and 16g of 60% nitric acid was continued to be mixed and milled for 40 minutes with a mixer to obtain a soft block plastic body.

[0034] (2) Preparation of toothed spherical alumina carrier

[0035] The soft block-shaped plastic body prepared in step (1) is put into the trough of the extruder, extruded through the toothed spherical orifice plate, and then pelletized to obtain the shaped carrier. Then, it was cured at room temperature for 1 hour, dried at 100-110°C for 2 hours in an air atmosphere, and baked in a muffle furnace at 500-550°C for 4 hours to obtain a toothed spherical ...

Embodiment 2

[0053] This embodiment is an evaluation experiment of the reference product and the invention products 1-5, and the experiment is carried out on a 100ml small-scale hydrogenation device. According to the following steps 1) and 2), the parallel experiment of catalytic hydrogenation reaction is carried out to reference substance, invention product 1~5 respectively, and the steps are as follows:

[0054] 1) Load 100ml of catalyst in the reactor, heat up to 320° C., and then presulfurize the kerosene containing 2% dimethyl disulfide for 8 hours under hydrogen atmosphere to obtain raw material oil.

[0055] 2) Then carry out the catalytic hydrogenation reaction of raw material oil, reaction conditions: hydrogen partial pressure 6.0MPa, liquid hourly space velocity 0.5 hour -1 , the volume ratio of hydrogen to oil is 800, and the reaction temperature is 372°C.

[0056] Table 2 Comparison of experimental results (various indicators of oil produced at >372°C)

[0057]

[0058] As...

Embodiment 3

[0063] (1) Preparation of toothed spherical alumina carrier precursor

[0064] 60g of commercial aluminum hydroxide produced by nitric acid method, 200g of commercial aluminum hydroxide produced by carbonization method, 8-10g of scallop powder, 10-12g of sodium polyacrylate and 10-13g of citric acid powder, mixed with a mixing mill for 10-30min Finally, add 80 g of deionized water and 16 g of 60% nitric acid, and continue to mix and grind for 100 to 120 min with a mixer to obtain a soft block plastic body.

[0065] (2) Preparation of toothed spherical alumina carrier

[0066] The soft block-shaped plastic body prepared in step (1) is put into the trough of the extruder, extruded through the toothed spherical orifice plate, and then pelletized to obtain the shaped carrier. Then, it was cured at room temperature for 1 hour, dried at 80-90°C for 4 hours in an air atmosphere, and baked at 550-600°C for 3 hours in a muffle furnace to obtain a toothed spherical alumina carrier.

...

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Abstract

The invention discloses a dentiform sphere shaped heavy oil hydrotreated catalyst and a preparation method thereof. The catalyst comprises an active composition, an addition agent and a dentiform sphere shaped aluminum oxide carrier, wherein the active composition comprises compounds of cobalt and nickel, and a compound of molybdenum or/and tungsten; the addition agent comprises a compound of phosphor, silicon, boron or halogen or compounds of any two compositions of the phosphor, the silicon, the boron and the halogen; and compositions according to gross weight of the dentiform sphere shaped heavy oil hydrotreated catalyst comprise: 2 to 6 percent of the cobalt compound, 3 to 10 percent of the nickel compound, 0 to 26 percent of the molybdenum compound, 0 to 8 percent of the tungsten compound, and 0.5 to 2 percent of the addition agent. The catalyst has the characteristics of high specific surface area, large pore volume, high strength, proper surface acid content, small bed pressure drop, low reaction temperature and high activity of hydrodesulfurization and denitrification. The preparation method comprises preparation of a precursor substance of the aluminum oxide carrier, preparation of the dentiform sphere shaped aluminum oxide carrier, preparation of a catalyst steeping fluid and preparation of the catalyst. The preparation process can be mastered and realized simply and easily.

Description

technical field [0001] The present invention relates to a heavy oil hydrotreating catalyst and a preparation method thereof, in particular to a toothed spherical catalyst for the hydrotreating of heavy oil such as atmospheric residue, vacuum residue, coking wax oil and the like. Preparation method etc. Background technique [0002] With the development of the national economy, people's demand for energy resources is increasing. As one of the important energy resources, petroleum resources, especially light oil resources, are decreasing day by day due to its non-renewable nature. With the reduction of light oil resources, the proportion of heavy oil in world oil production is increasing, and the content of residual oil in heavy oil is as high as 60%. Therefore, the lightening of heavy oil is one of the very important tasks in the current oil refining industry. Among them, the hydrotreating of heavy oil is one of the important means of lightening heavy oil. The so-called hy...

Claims

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Application Information

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IPC IPC(8): B01J23/882B01J23/883B01J23/888B01J21/06B01J27/16B01J27/12B01J21/02B01J21/08B01J35/08C10G49/04
Inventor 杨大奎冯天张谦温
Owner BEIJING GAOXIN LIHUA TECH CO LTD
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