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Preparation method of catalyst by ultralow-sulfur hydrofining

A technology for hydrorefining and catalyst, which is applied in the field of oil refining to achieve the effects of moderate surface acidity, large pore volume, and high low-temperature reaction activity of the catalyst

Inactive Publication Date: 2013-02-06
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, hydrodesulfurization has been paid much attention, but this situation is changing. On the one hand, the processing of high-nitrogen heavy oil has become the general trend; on the other hand, the existence of nitrogen compounds inhibits the deep hydrodesulfurization performance of catalysts.

Method used

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  • Preparation method of catalyst by ultralow-sulfur hydrofining
  • Preparation method of catalyst by ultralow-sulfur hydrofining
  • Preparation method of catalyst by ultralow-sulfur hydrofining

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 240g of a macroporous aluminum hydroxide dry rubber powder, the content of which is 70% on a dry basis of alumina, mixed with 6g of scallop powder, 9g of 66% concentrated nitric acid and 10g of oxalic acid, added deionized water, kneaded and mixed in a kneader Evenly, extrude and shape through extruder to obtain clover strips with a diameter of 1.5mm. Dry in an oven at 120°C for 12 hours, and bake in a muffle furnace at 550°C for 4 hours to obtain carrier Z-1, whose properties are shown in Table 1.

[0027] Add 6g of phosphoric acid to 60mL of deionized water, add 28g of molybdenum oxide and 16g of basic nickel carbonate under heating and stirring, then add 30g of ammonium metatungstate and 5g of cobalt carbonate after dissolving, stir, and after it is completely dissolved, set the volume to 100mL to obtain W-Mo-Ni-Co-P co-immersion solution, set aside for later use.

[0028] Take 120g of the carrier strips prepared in the previous step in the dipping tank, add them ...

Embodiment 2

[0030] By a kind of macroporous aluminum hydroxide dry rubber powder 240g, its aluminum oxide content is 70%, mixes 25% silica sol 88g, turmeric powder 6g, 66% concentrated nitric acid 9g and oxalic acid 10g, adds deionized water, in Knead and mix in a kneader, and then extrude through an extruder to obtain clover strips with a diameter of 1.5 mm. Dry in an oven at 120°C for 12 hours, and bake in a muffle furnace at 550°C for 4 hours to obtain carrier Z-2, whose properties are shown in Table 1.

[0031] Add 6g of phosphoric acid to 120mL of deionized water, add 28g of molybdenum oxide and 16g of basic nickel carbonate under heating and stirring, then add 30g of ammonium metatungstate and 5g of cobalt carbonate after dissolving, stir until it is completely dissolved, and then set the volume to 200mL to obtain W-Mo-Ni-Co-P co-immersion solution, divide the co-immersion solution into two parts of equal volume and store it for later use.

[0032] Take 120g of the carrier strips...

Embodiment 3

[0035] 240g of a macroporous aluminum hydroxide dry rubber powder, whose alumina content is 70%, is mixed with 25% of silica sol 88g, zirconium oxynitrate 22g, cinnamon powder 6g, 66% concentrated nitric acid 9g and polyethylene glycol (Polymerization degree 2000) 10g, add deionized water, knead and mix in a kneader, and then extrude through an extrusion machine to obtain butterfly-shaped strips with a diameter of 1.5 mm. Dry in an oven at 120°C for 12 hours, and bake in a muffle furnace at 550°C for 4 hours to obtain carrier Z-3, whose properties are shown in Table 1.

[0036] Add 15g of citric acid to 120 mL of deionized water, add 28g of molybdenum oxide and 16g of basic nickel carbonate under heating and stirring, then add 30g of ammonium metatungstate and 5g of cobalt carbonate after dissolving, and stir until it is completely dissolved. 200mL to obtain the complexed W-Mo-Ni-Co-P co-immersion solution, divide the co-immersion solution into two parts of equal volume and se...

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Abstract

The invention relates to a preparation method of catalyst by ultralow-sulfur hydrofining. Al2O3-SiO2-ZrO2 tertiary compound oxide as a carrier, W-Mo-Ni-Co quaternary elements as active metal components and P as aid are used to prepare the catalyst which is butterfly-shaped. The preparation method is characterized by introducing SiO2 to Al2O3 to modulate surface acidity of the carrier and increasing specific surface area and pore volume of the carrier; introducing ZrO2 to increase low-temperature reactivity of the catalyst; preparing metallic co-impregnated solution by complexing process, and loading W-Mo-Ni-Co quaternary active metal components and the aid P by means of stepwise saturated impregnation to increase dispersity and utilization rate of active metals. The catalyst has the advantages of large specific surface, large pore volume, moderate surface acidity, high metal reduction activity and high low-temperature reactivity. Compared with like catalysts, the catalyst can be used to produce ultralow-sulfur diesel with lower than 10microgram / g sulfur content under low reaction severity.

Description

technical field [0001] The invention belongs to the field of oil refining, and in particular relates to a preparation method of an ultra-low-sulfur hydrogenation catalyst. Background technique [0002] At present, the heavy and inferior quality of crude oil is becoming more and more serious. The output of sour crude oil (with a sulfur content of 0.5%~2.0%) and high-sulfur crude oil (with a sulfur content of more than 2.0%) in the world has accounted for more than 75% of the world's total crude oil output. Among them, crude oil with a sulfur content of more than 1% exceeds 55% of the world's total crude oil production, and crude oil with a sulfur content of more than 2% also accounts for more than 30%. The standards for tail gas discharged into the atmosphere are becoming more and more stringent, and the requirements for the quality standards of petroleum products are also getting higher and higher, that is, the allowable sulfur content is getting lower and lower. On January ...

Claims

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Application Information

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IPC IPC(8): B01J23/888C10G45/08
Inventor 杨建国刘红光石芳张国辉肖寒李佳赵训志
Owner CHINA NAT OFFSHORE OIL CORP
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