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Hydrotreating catalyst and preparation method thereof

A hydrogenation treatment and catalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problem of high price of active metal components, low utilization rate of active components, and catalyst selection To solve the problems such as the reduction of property, achieve the effect of reasonable distribution of components, high utilization rate and inhibition of diffusion

Active Publication Date: 2019-08-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst still has the following problems: First, the utilization rate of the active components is not high, and the active components deep inside the catalyst particles are difficult to play their due role. Most catalysts use metals as active components, and many active metal components are sold for sale. Expensive
The second is that the mass transfer in the pores deep inside the catalyst particles is difficult, a large amount of reactants or reaction products are deposited, and side reactions that are difficult to control occur at high temperatures, resulting in a decrease in catalyst selectivity.

Method used

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  • Hydrotreating catalyst and preparation method thereof
  • Hydrotreating catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of Mo-Ni-P aqueous solution:

[0034] 7.0g phosphoric acid H 3 PO 4 (concentration 85 wt%) was dissolved in 80mL of water, then added 23.8g of molybdenum trioxide and 8.8g of basic nickel carbonate, heated to 100°C, stirred and refluxed for 2.0h, and filtered to 100mL to obtain Mo-Ni-P aqueous solution. where MoO 3 The concentration of NiO is 0.23g / mL, the concentration of NiO is 0.046g / mL, and the concentration of P is 0.019g / mL.

[0035] (2) Preparation of catalyst:

[0036] 79.3g of amorphous silica-alumina carrier (silica content 20wt%, pore volume 0.78mL / g, specific surface area 320m 2 / g, cylinder, diameter 0.8mm) and 550g of n-decane solution were added to the autoclave, heated to 400°C, and reacted for 3h. After the reaction, the catalyst was filtered out and dried at 30°C until there was no liquid on the surface of the carrier phase to obtain catalyst precursor A; then add it to an aqueous solution containing 100.0g citric acid, let it sta...

Embodiment 2

[0042] (1) Preparation of Mo-Ni-P aqueous solution:

[0043] 8.7g phosphoric acid H 3 PO 4 (concentration 85 wt%) was dissolved in 80mL of water, then added 30.3g of molybdenum trioxide and 11.2g of basic nickel carbonate, heated to 100°C and stirred and refluxed for 2.0h, filtered and set to 100mL to obtain Mo-Ni-P aqueous solution. where MoO 3 The concentration of NiO was 0.30 g / mL, that of NiO was 0.06 g / mL, and that of P was 0.023 g / mL.

[0044] (2) Preparation of catalyst:

[0045] 75.2g of amorphous silica-alumina carrier (silica content 20wt%, pore volume 0.78mL / g, specific surface area 320m 2 / g, cylinder, diameter 0.8mm) and 550g of n-decane solution were added to the autoclave, heated to 400°C, and reacted for 3h. After the reaction, the catalyst was filtered out and dried at 30°C until there was no liquid on the surface of the carrier phase to obtain catalyst precursor A; then add it to an aqueous solution containing 100.0g citric acid, let it stand for 5min, ...

Embodiment 3

[0051] (1) Preparation of Mo-Ni-P aqueous solution:

[0052] 10.2g phosphoric acid H 3 PO 4 (concentration 85 wt%) was dissolved in 80mL of water, then added 34.8g of molybdenum trioxide and 12.8g of basic nickel carbonate, heated to 100°C and stirred and refluxed for 2.0h, filtered and set to 100mL to obtain Mo-Ni-P aqueous solution. where MoO 3 The concentration of NiO was 0.34 g / mL, that of NiO was 0.069 g / mL, and that of P was 0.03 g / mL.

[0053] (2) Preparation of catalyst:

[0054] 72.3g of amorphous silica-alumina carrier (silica content 20wt%, pore volume 0.78mL / g, specific surface area 320m 2 / g, cylinder, diameter 0.8mm) and 550g of n-decane solution were added to the autoclave, heated to 400°C, and reacted for 3h. After the reaction, the catalyst was filtered out and dried at 30°C until there was no liquid on the surface of the carrier phase to obtain catalyst precursor A; then add it to an aqueous solution containing 100.0g citric acid, let it stand for 5min,...

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Abstract

The invention provides a hydrotreating catalyst and a preparation method thereof. The hydrotreating catalyst takes Mo and Ni as active metal components and P as an auxiliary agent, and a carrier is amorphous silica-alumina. With the weight of the carrier as a reference, the content of MoO<3> is in a range of 10%-25%, the content of NiO is in a range of 2%-6%, the content of the P is in a range of 0.5%-2.5%, and the balance is the carrier. The invention also provides a preparation method of the hydrotreating catalyst. The catalyst prepared by the preparation method provided by the invention has a more reasonable distribution of the active metal components and a high utilization ratio, and not only is the metal usage amount decreased, but also the activity of catalysts is increased.

Description

technical field [0001] The invention relates to a hydroprocessing catalyst and a preparation method thereof, in particular to a loaded hydroprocessing catalyst and a preparation method thereof. Background technique [0002] As the sulfur content in vehicle fuel standards decreases year by year, hydrodesulfurization has become the main way to process inferior raw materials to produce clean fuel. The activity of hydrodesulfurization catalyst determines the economic benefit of the whole hydrodesulfurization process. Highly active hydrodesulfurization catalysts can produce low-sulfur products under moderate conditions, thereby prolonging the operating cycle and saving operating costs. [0003] Hydrodesulfurization catalysts usually use Group VIB and Group VIII metals as active components, and various additives can be added to improve catalyst activity. At present, the catalyst preparation method commonly used in countries all over the world is the solution impregnation method,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/19B01J35/10C10G45/08
CPCB01J27/19B01J35/1019B01J35/1038B01J35/1042B01J35/1061C10G45/08
Inventor 金浩孙素华朱慧红杨光
Owner CHINA PETROLEUM & CHEM CORP
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