Preparation method of hydrofining catalyst

A technology for hydrorefining and catalysts, which is applied in catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. Pore ​​structure, affecting catalyst performance, etc., to achieve the effect of improving physicochemical properties, increasing quantity, active metal loading and high dispersion

Active Publication Date: 2012-10-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the impregnating liquid adopted in this method, the complexing agent adopts organic carboxylic acid and polyhydric alcohol, and after boron and polyhydric alcohol are complexed and reacted, the acidity of the solution will be increased, and in the presence of organic carboxylic acid, the acidity of the impregnating liquid will be enhanced, When impregnating the alumina support, it will damage the strength and pore structure of the support, and also affect the dispersion of active metals and boron, thereby affecting the performance of the catalyst
In addition, since boron is complexed with polyols, active metal ions can be complexed with organic acids and polyols, so there is a problem of competitive complexation between boron and active metal ions, which will also affect the active metal and boron. Dispersion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Pseudo-boehmite dry rubber powder 115 grams, with ethanol as wetting agent, its saturated adsorption value is 270 grams after measuring. Take 115 grams of dry rubber powder and 3 grams of scallop powder, mix well, then gradually add 135 grams of ethanol, and keep stirring until uniform. Prepare the impregnation solution as follows: 6.92 grams of boric acid, 10 grams of humic acid urea, 15.56 grams of ammonium tetramolybdate, 13.98 grams of cobalt nitrate, and 160 grams of water. Then gradually add the impregnating solution into the above-mentioned wet alumina precursor, first stir it into a ball, then move it into an extruder, fully knead it into a plastic body, and then extrude it into a bar shape. After drying overnight at room temperature, the extrudate was dried at 110°C for 4 hours. The dried sample was placed in a high-temperature furnace, heated to 550°C, and roasted at this temperature for 6 hours at a constant temperature to obtain the hydrofining catalyst, nu...

Embodiment 2

[0026] 115 grams of pseudo-boehmite dry rubber powder, 3 grams of squat powder, mixed evenly in a dry state, then gradually added 130 grams of 60v% ethanol solution, and kept stirring until uniform. Prepare the impregnation solution as follows: 6.92 grams of boric acid, 13 grams of humic acid urea, 15.56 grams of ammonium tetramolybdate, 26.79 grams of cobalt nitrate, and 163 grams of water. Then gradually add the impregnating solution into the above-mentioned wet alumina precursor, first stir it into a ball, then move it into an extruder, fully knead it into a plastic body, and then extrude it into a bar shape. After drying overnight at room temperature, the extrudate was dried at 110°C for 4 hours. Put the dried sample in a high-temperature furnace, raise the temperature to 600°C, and roast at this temperature for 4 hours at a constant temperature, place the dried sample in a high-temperature furnace, raise the temperature to 550°C, and roast at this temperature for 6 hours ...

Embodiment 3

[0028] 115 grams of pseudo-boehmite dry rubber powder and 3 grams of safflower powder were mixed evenly in a dry state, and then gradually added 150 grams of 60v% ethanol solution, and kept stirring until uniform. Prepare the composition of the dipping solution as follows: 6.22 grams of boric acid, 10 grams of humic acid urea, 19.10 grams of ammonium metatungstate, 15.18 grams of nickel nitrate, and 160 grams of water. Then gradually add the impregnating solution into the above-mentioned wet alumina precursor, first stir it into a ball, then move it into an extruder, fully knead it into a plastic body, and then extrude it into a bar shape. After drying overnight at room temperature, the extrudate was dried at 110°C for 4 hours. Put the dried sample in a high-temperature furnace, raise the temperature to 600°C, and roast at this temperature for 4 hours at a constant temperature, place the dried sample in a high-temperature furnace, raise the temperature to 550°C, and roast at t...

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Abstract

The invention discloses a preparation method of a hydrofining catalyst, comprising the following steps of: mixing a complex impregnation liquid containing Group VIB and Group VIII metal, humic acid urea and boron compound with an alumina precursor, moulding, drying, and roasting to obtain the hydrofining catalyst. By the adoption of the method, loading and dispersity of active metal and a boron aid on the surface of alumina can be raised, and performance of the catalyst is further improved.

Description

technical field [0001] The invention relates to a method for preparing a hydrorefining catalyst, which belongs to the field of inorganic material preparation. Background technique [0002] Hydrofining is an important means to remove sulfur, nitrogen, oxygen and other organic substances in oil by catalytic hydrogenation. At present, an important aspect in the research of hydrorefining catalysts is to adopt various methods to prepare alumina supports for catalysts and modify them to obtain catalytic materials with good performance. [0003] As a catalytic carrier material, alumina is widely used in the field of hydrogenation. However, when alumina is used as a catalyst carrier, the acidity is weak, and it is easy to strongly interact with the active metal component to form inactive species. Sintering affects the activity and stability of the catalyst. Therefore, when alumina is used as a catalyst carrier, one or several other elements are usually added to adjust the acidity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/882B01J23/888B01J37/02C10G45/08C10G45/06
Inventor 王少军杨卫亚凌凤香沈智奇孙万付
Owner CHINA PETROLEUM & CHEM CORP
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