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Hydrodemetallization catalyst and preparation method thereof

A technology for hydrodemetallization and catalyst, which is applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc. The performance needs to be further improved, the carrier utilization rate is reduced, etc., to achieve the effect of promoting the penetration and uniformity, overcoming the large pore size and specific surface area and mechanical strength.

Active Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the catalyst prepared by this technology has a double pore distribution, the pore size of the large pore part is relatively large, resulting in a short time for the reaction molecules to stay in the pore channel, which reduces the utilization rate of the carrier, and the stability needs to be further improved.

Method used

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  • Hydrodemetallization catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) Weigh 200 grams of pseudo-boehmite (produced by Shandong Aluminum Co., Ltd., with a dry weight content of 70wt%), 29 grams of carbon black powder with an average particle size of 7 microns, and 0.3 grams of safflower powder. Mix evenly, add an appropriate amount of aqueous solution in which 4.5 grams of acetic acid is dissolved, knead, extrude, and dry the molded product at 120°C for 6 hours, and bake the dried product at 700°C for 5 hours to obtain an alumina carrier.

[0057] (2) Weigh 100 grams of alumina carrier in step (1), place it in 820 grams of ammonium bicarbonate solution with a mass concentration of 22%, transfer the mixed material into an autoclave and seal it, and heat up at a speed of 15°C / min to After 100°C, the temperature was kept constant for 3 hours, and then the temperature was raised to 130°C at a rate of 10°C / min for 6.5 hours, and then the carrier was dried at 100°C for 6 hours and calcined at 650°C for 5 hours to obtain modified alumina carri...

Embodiment 2

[0062] Same as Example 1, except that the addition of step (1) carbon black powder is 25 grams, and the particle size is 8 microns; the addition of step (2) ammonium bicarbonate is 1140 grams, and the concentration of ammonium bicarbonate is 15.5%. The pretreatment temperature is 80° C., the treatment time is 4 hours, the heat treatment temperature is 150° C., and the treatment time is 4.5 hours, to obtain the modified alumina carrier S-2. Step (3) MoO in active metal impregnation solution 3 Concentration is 7.69g / 100mL, NiO concentration is 3.24g / 100mL; step (4) MoO in active metal impregnation solution 3 The concentration is 0.85g / 100mL, the concentration of NiO is 0.61g / 100mL, and the amount of active metal impregnation solution is 4.5mL to prepare hydrodemetallization catalyst C2. The content of molybdenum oxide in the catalyst is 8.07wt%, and the content of nickel oxide is 3.45wt%. . The ratio by weight of the content of the hydrogenation active metal on the rod-shaped ...

Embodiment 3

[0065] With embodiment 1, only the addition of step (1) carbon black powder is 33 grams, and particle diameter is 5 microns; The addition of step (2) ammonium bicarbonate is 930 grams, and the concentration of ammonium bicarbonate is 24%, heat treatment The temperature was 140° C., and the treatment time was 5.5 hours to obtain a modified alumina carrier S-3. Step (3) MoO in active metal impregnation solution 3 Concentration is 7.83g / 100mL, NiO concentration is 3.31g / 100mL; step (4) MoO in active metal impregnation solution 3 The concentration is 1.06g / 100mL, the concentration of NiO is 0.53g / 100mL, and the amount of active metal impregnation solution is 2.8mL to prepare hydrodemetallization catalyst C3. The content of molybdenum oxide in the catalyst is 8.12wt%, and the content of nickel oxide is 3.37wt%. . The ratio by weight of the content of the hydrogenation active metal on the rod-shaped alumina on the outer surface of the catalyst to the content of the hydrogenation a...

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Abstract

The invention discloses a hydrodemetallization catalyst and a preparation method thereof. The hydrodemetallization catalyst comprises a carrier and a hydrogenation active metal component, wherein thecarrier is an aluminum oxide-based carrier and comprises main body aluminum oxide and rod-like aluminum oxide, the main body aluminum oxide is aluminum oxide with micron-sized pore channels, and at least a part of the rod-like aluminum oxide is distributed on the outer surface of the main body aluminum oxide and in the micron-sized pore channels with the pore diameter of 3-10 microns; wherein thelength of the rod-like aluminum oxide is 1-12[mu]m, the diameter of the rod-like aluminum oxide is 80-300nm, and the content of the hydrogenation active metal on the rod-like aluminum oxide on the outer surface of the catalyst is higher than the content of the hydrogenation active metal in the bulk phase of the catalyst. The hydrodemetallization catalyst disclosed by the invention is strong in metal deposition resistance and carbon deposition resistance, good in activity and stability, and suitable for the hydrotreating process of heavy oil.

Description

technical field [0001] The invention relates to the field of catalysis, in particular to a highly active hydrodemetallization catalyst and a method thereof. The hydrodemetallization catalyst is particularly suitable for the field of residual oil hydrogenation. Background technique [0002] With the intensification of crude oil deterioration and heaviness, the efficient conversion of heavy oil and the improvement of the yield of light oil products have become an important trend in the development of refining technology. The fixed bed hydrogenation technology of residual oil is an effective means to realize the efficient conversion of heavy oil. Adopting this technical route can effectively remove impurities such as metals, sulfur, nitrogen and residual carbon in residual oil, provide high-quality feed for catalytic cracking, and meet stricter environmental protection regulations while increasing production of light oil products. In the process of heavy oil processing, the me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/236B01J35/10C10G45/08
CPCB01J27/236B01J23/002C10G45/08C10G2300/202C10G2300/1037B01J2523/00B01J35/615B01J35/635B01J35/647B01J35/651B01J35/653B01J35/695B01J2523/31B01J2523/68B01J2523/847
Inventor 韩博季洪海凌凤香张会成王少军
Owner CHINA PETROLEUM & CHEM CORP
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