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Hydrotreatment catalyst and preparation method thereof

A hydrotreating and catalyst technology, applied in physical/chemical process catalysts, catalyst carriers, chemical instruments and methods, etc., can solve the problems of uneven dispersion, poor alumina modification effect, etc., and achieve the improvement of hydrodesulfurization activity, The effect of improving surface acidity and pore structure and improving hydrodenitrogenation performance

Inactive Publication Date: 2012-07-25
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned patents, the carrier modifiers (molecular sieves, fluorides and zirconium compounds) are all added during the kneading process of preparing the carrier, which has the problem of uneven dispersion and poor effect on alumina modification

Method used

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  • Hydrotreatment catalyst and preparation method thereof
  • Hydrotreatment catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 30 grams of aluminum hydroxide dry glue containing 4w% of F and 2w% of silicon oxide and 70 grams of aluminum hydroxide dry glue of 10w% containing zirconia and mix them evenly with 5 grams of squash powder, add 90ml of Dilute nitric acid solution with a concentration of 3%, mixed evenly, extruded into strips, dried at 120°C for 4 hours, and calcined at 550°C for 4 hours to prepare modified carrier SA-1.

[0020] Take 30 grams of aluminum hydroxide dry glue containing 6w% F and 2w% silicon oxide and 70 grams of aluminum hydroxide dry glue containing 10w% zirconia and mix them evenly with 5 grams of squash powder, and follow the above steps Preparation of modified carrier SA-2.

[0021] Take 30 grams of aluminum hydroxide dry glue containing 10w% of F and 2w% of silicon oxide and 70 grams of aluminum hydroxide dry glue of 10w% containing zirconia and mix them evenly with 5 grams of squash powder, and follow the above steps Preparation of modified carrier SA-3.

[...

Embodiment 2

[0025] 51.5 grams of molybdenum trioxide, 13.2 grams of basic nickel carbonate, 10.3 grams of 85% phosphoric acid were dissolved and calibrated to 100ml to obtain a Ni-Mo-P impregnation solution, and 100 grams of SA-1 carrier was impregnated with 75ml of the impregnation solution in equal volumes at 120 It was dried at ℃ for 4 hours and calcined at 400℃ for 4 hours to prepare catalyst A-1.

[0026] The SA-2, SA-3, SA-4 and SA-5 carriers were respectively impregnated with the same impregnating solution to prepare A-2, A-3, A-4 and A-5 catalysts respectively.

Embodiment 3

[0037] This example is an activity evaluation test of the catalyst of the present invention and compared with other catalysts. The evaluation is carried out on a 100ml small-scale hydrogenation device, and the evaluation conditions are: reaction pressure 10.0MPa, hydrogen-oil volume ratio 500:1, volume space velocity 1.5h -1 , The reaction temperature is 380°C. The properties of the raw oil used are shown in Table 1, and the evaluation results are shown in Table 2.

[0038] Table 1 Evaluation of raw oil properties

[0039]

[0040] Table 2 Catalyst evaluation results

[0041]

[0042] As can be seen from Table 2, under the same process conditions, the catalyst of the present invention has a better pore structure and surface acidity, and the modified carrier and catalyst are prepared by using F, Si, Zr combined modified aluminum hydroxide dry glue to improve the carrier And the surface acidity of the catalyst, while improving the hydrodesulfurization activity of the ca...

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Abstract

The invention discloses a hydrotreatment catalyst and a preparation method thereof. The preparation method comprises the following steps of: mixing fluorine / silicon-modified aluminum hydroxide dry glue with zirconium-modified aluminum hydroxide dry glue to obtain an aluminum oxide carrier; soaking VIB and VIII metal active ingredients; and drying and baking, wherein the content of the aluminum oxide carrier is 60-90 percent by weight; the content of a VIB metal oxide is 5-35 percent by weight; the content of a VIII family metal oxide is 1-10 percent by weight; and the content of P2O5 is 0.5-5 percent by weight. The catalyst has high hydrodesulfurization activity and high hydrodenitrogeneration activity, and can be widely applied to hydrotreatment of petroleum fractions, particularly hydrotreatment of heavy fraction oil such as hydrotreatment of FCC (Fluid Catalytic Cracking) raw materials or hydrocracking raw materials.

Description

Technical field: [0001] The invention relates to a hydrogenation catalyst and a preparation method thereof. The catalyst has high denitrification activity, and is especially suitable for hydrogenation treatment of heavy distillate oil, such as FCC raw material or hydrocracking raw material hydrogenation treatment. Background technique: [0002] Hydrotreating is an important process technology in petroleum processing. It is of great significance for improving secondary processing feed (catalytic cracking and hydrocracking, etc.) and improving oil quality (gasoline and diesel, etc.). The key to hydrotreating technology lies in the catalyst. At present, most hydrotreating catalysts use alumina as the carrier, and the VIB group metal molybdenum and / or tungsten and the VIII group metal nickel and / or cobalt are the active components. This type of catalyst has a good Hydrodesulfurization activity, while hydrodenitrogenation activity is slightly worse. In order to improve the hydro...

Claims

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Application Information

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IPC IPC(8): B01J27/19B01J27/188B01J35/10B01J32/00B01J21/06C10G45/08
Inventor 张孔远刘晨光宋开畅徐鲁燕付兆霖
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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