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Preparation method of wax oil hydrogenation pretreatment refining agent

A wax oil, pre-hydrogenation technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of increased production cost, high price, low metal dispersion, etc., to improve utilization efficiency, high hydrodesulfurization, and high dispersion

Inactive Publication Date: 2013-08-14
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst has good hydrorefining activity for light distillate oil, but the active metals supported by it are two components of Ni and Mo, and the problem of low metal dispersion is not easy to solve
As far as the current domestic price is concerned, the price of molybdenum oxide is higher than that of tungsten oxide, WO 2 About 250,000 yuan / ton, MoO 3 It is 440,000 yuan / ton, so for domestic refineries, Ni-Mo / Al 2 o 3 Type catalysts will increase production costs

Method used

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  • Preparation method of wax oil hydrogenation pretreatment refining agent
  • Preparation method of wax oil hydrogenation pretreatment refining agent
  • Preparation method of wax oil hydrogenation pretreatment refining agent

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0018] This example is a comparative example. 240g of a macroporous aluminum hydroxide dry rubber powder, whose alumina content is 70%, 6g of scallop powder, 9g of 66% concentrated nitric acid, and 10g of methyl cellulose, add deionized water, and knead in a kneader Mix evenly, and then extrude and shape through an extruder to obtain clover strips with a diameter of 1.5 mm. Dry it in an oven at 120°C for 12 hours, and bake it in a tube furnace at 500°C for 4 hours with air to obtain alumina carrier T1, whose properties are shown in Table 1.

[0019] Add 140 g of the prepared alumina carrier strips to 100 mL of deionized aqueous solution containing 55 g of ammonium metatungstate hexahydrate, 24 g of ammonium heptamolybdate tetrahydrate, 35 g of nickel nitrate hexahydrate and 7 g of citric acid, and soak at room temperature for 4 hours, after separation, the wet catalyst was placed in an oven at 120°C, dried for 4 hours, and calcined at 500°C with air in a tube furnace for 4 ho...

Embodiment 2

[0021] 240g of a macroporous aluminum hydroxide dry rubber powder, whose alumina content is 70%, is mixed with 40g of zirconium hydroxide, 55g of 25% silica sol, 6g of kale powder, 9g of 66% concentrated nitric acid and methyl cellulose 10 g, added deionized water, kneaded and mixed in a kneader, and then extruded by 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 tube furnace with air at 550°C for 4 hours to obtain silicon-zirconium-modified alumina carrier T2, whose properties are shown in Table 1.

[0022] Add 140 g of the prepared silicon-zirconium-modified alumina carrier strip to 100 mL of 48 g ammonium metatungstate hexahydrate, 20 g ammonium heptamolybdate tetrahydrate, 25 g nickel nitrate hexahydrate, 8 g phosphoric acid, and 6 g citric acid. Ion aqueous solution, soaked at room temperature for 4 hours, after separation, put the wet catalyst in an oven at 120°C, dried for 4 hours, and calcined in a tub...

Embodiment 3

[0024] 240 grams of a macroporous aluminum hydroxide dry rubber powder, whose alumina content is 70%, is mixed with 45g of zirconium hydroxide, 65g of 25% silica sol, 6g of turmeric powder, 9g of 66% concentrated nitric acid and polyethylene glycol Alcohol (polymerization degree 2000) 10g, add deionized water, knead and mix in a kneader, and then extrude through an 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 tube furnace with air at 550°C for 4 hours. The properties of the obtained silicon-zirconium-modified alumina carrier T3 are shown in Table 1.

[0025] Add deionized water to 15 grams of ammonium fluoride to 200 mL, after dissolving, add 140 g of silicon-zirconium modified alumina carrier strips, soak at room temperature for 4 hours, after separation, place the wet fluorine-containing alumina strips in an oven at 120 ° C Internally dried for 4 hours, and then fired in a tube furnace at 500°C with dry air fo...

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Abstract

The invention relates to a preparation method of a wax oil hydrogenation pretreatment refining agent; and the preparation method is characterized by comprising the steps of: adding zirconium hydroxide and silica sol into macroporous aluminum hydroxide dry gel powder; drying and carrying out high-temperature roasting to obtain silicon-zirconium modified aluminum oxide gamma-Al2O3 as carrier; and loading active hydrogenated metal oxide components such as tungsten, molybdenum, cobalt and nickel as well as auxiliary agents containing components such as phosphorus and fluorine by using an impregnation method.

Description

technical field [0001] The invention belongs to the field of oil refining, and in particular relates to a preparation method of a wax oil pretreatment hydrofining catalyst. Specifically, it is a preparation method of a wax oil pretreatment hydrorefining catalyst with silicon-zirconium modified alumina as a carrier. Background technique [0002] Traditional distillate hydrotreating catalysts usually use zirconia and silica-alumina as carriers. The supported active metal components are usually selected from Group VIB and Group VIII metals, commonly used are bimetallic components or trimetallic components composed of Co, Ni, Mo, W, etc. For desulfurization-based distillate oil hydrofinishing, the hydrogenation active metal component of the catalyst is preferably a combination of Co(Ni)-Mo; for distillate oil hydrofinishing mainly hydrogenated such as denitrogenation and aromatics saturation, Ni is preferred. -W combination. [0003] CN1289828A discloses γ-Al 2 o 3 or with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/08B01J27/19
Inventor 石芳杨建国于海斌张国辉肖寒赵训志钟读乐李佳
Owner CHINA NAT OFFSHORE OIL CORP
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