Heavy fractional oil hydrogenation treating catalysts

A hydrogenation treatment and catalyst technology, applied in the direction of physical/chemical process catalysts, catalyst carriers, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as Al, achieve high specific surface area, increase bulk density , is conducive to the effect of technology dispersion

Inactive Publication Date: 2007-10-24
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the present invention, the average pore diameter is 3-10nm, the pore volume is 0.5-1.1ml / g, and the specific surface area is 100-500m 2 The MCM-41 / alumina composite carrier of / g is used as a carrier, which solves the problem of Al in MCM-41, improves the acidity of MCM-41 molecular sieve, and also solves the problem of MCM-41 stability. The active component is at least one A metal component selected from group VIII and at least one metal component selected from group VIB, the specific surface area of ​​the prepared catalyst is 145-230m 2 / g, the pore volume is 0.44~0.67mL / g, the pore diameter is 2.90~4.50nm

Method used

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  • Heavy fractional oil hydrogenation treating catalysts
  • Heavy fractional oil hydrogenation treating catalysts

Examples

Experimental program
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Effect test

Embodiment 1

[0029] In 50ml of water, add 24g of pseudo-boehmite, then add 88ml of water glass (modulus 3.1) into the above mixed system, and soak for 6 hours. Get 30g of cetyltrimethylammonium bromide and 100ml of water, stir to form micelles, mix the two, and adjust the pH to 11.0 with 2mol / L dilute sulfuric acid after stirring for 1 hour. Hydrothermal crystallization in a lined autoclave at 140°C for 24 hours, the product was taken out, washed 5 times with 100ml of distilled water, dried at 110°C for 12 hours, and calcined at 550°C for 5 hours to obtain white MCM-41 / γ-Al 2 o 3 composite material1. The weight ratio of MCM-41 to alumina was 1.85.

Embodiment 2

[0031] In 50ml of water, add 12g of pseudo-boehmite, then add 88ml of water glass (modulus 3.1) into the above mixed system, and soak for 6 hours. Get 30g of cetyltrimethylammonium bromide and 100ml of water, stir to form micelles, mix the two, and after stirring for 1 hour, adjust the pH to 12.0 with 2mol / L of dilute sulfuric acid. Hydrothermal crystallization in a lined autoclave at 140°C for 48 hours, the product was taken out, washed 5 times with 100ml of distilled water, dried at 110°C for 12 hours, and calcined at 550°C for 5 hours to obtain white MCM-41 / γ-Al 2 o 3 Composite material 2. The weight ratio of MCM-41 to alumina was 3.7.

Embodiment 3

[0036] This embodiment is the preparation of catalyst.

[0037] Take the MCM-41 / alumina composite material of Example 1 and Example 2, MCM-41 of Comparative Example 1 and 7.0g of pure alumina, add 15ml of ammonium metatungstate aqueous solution, soak at 50°C for 3 hours, and dry at 110°C 10 hours, 500 ℃ air roasting 3 hours; then on the basis of the above materials, add 6ml of nickel nitrate aqueous solution, soak 3 hours at 50 ℃, 110 ℃ dry 10 hours, 500 ℃ air roasting 3 hours, obtain catalyst 1 ~ Catalyst 4. WO in the catalyst 3 The mass percentage of NiO is 27.4%, the mass percentage of NiO is 2.7%, and the rest is the carrier. Table 2 shows the physical and chemical properties of catalysts 1-4 according to different supports.

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Abstract

The invention relates to a heavy distillate oil hydrotreating accelerant whose carrier is MCM-41 meson molecular screen compound material, with at least one selected from VIII or VIB for the active group, with compound material being 65-80% of the total weight, VIII metal 4-9%, VIB metal 16-28%, even big radius hole ensuring the smooth running in and out of the reaction molecule to the hole, high ratio surface being beneficial for the technical distraction, providing more active center, accumulated radius distribution increasing accelerant density, improving its activeness and stability.

Description

technical field [0001] The invention belongs to the field of petroleum refining, and relates to a catalyst for hydrotreating heavy distillate oil, in particular to a catalyst for hydrotreating vacuum gas oil and coker wax oil. Background technique [0002] In recent years, as crude oil becomes heavier, the content of sulfur, nitrogen, metals, etc. in heavy distillate oil such as coker wax oil is getting higher and higher, so its cracking performance is poor, and it is easy to cause coking and deactivation of the catalyst , so that the coker gas oil can only be added to the catalytic cracking feedstock in a very low amount for processing. Therefore, hydrotreating coker wax oil is the most direct and effective way to improve its machinability. However, traditional hydrogenation catalysts have disadvantages such as small pore size, wide distribution, insufficient openness, and poor accessibility between raw material macromolecules and active centers. Therefore, the incompatib...

Claims

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Application Information

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IPC IPC(8): B01J23/85B01J32/00C10G45/08C10G49/04C10G49/08
Inventor 刘百军孟庆民李敏
Owner BC P INC CHINA NAT PETROLEUM CORP
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