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Method for preparing petroleum wax hydrofining catalyst

A hydrorefining and catalyst technology, which is applied in petroleum wax refining, catalyst activation/preparation, catalyst carrier, etc., can solve the problems of complex process and difficult operation, and achieve simple preparation process, improved dispersion degree, and increased pore volume Effect

Active Publication Date: 2011-05-04
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is more complicated and the operation is difficult

Method used

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  • Method for preparing petroleum wax hydrofining catalyst
  • Method for preparing petroleum wax hydrofining catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) SiO 2 -P 2 o 5 -Al 2 o 3 Preparation of vector

[0026] Take by weighing 1000g pseudo-boehmite, 30g Tianqing powder, 30g citric acid, 100g silica sol (SiO 2 concentration of 30%), 100g of fatty alcohol ether phosphate, and 700ml of 3-5% dilute nitric acid are mixed evenly, extruded with an extruder, dried at 110°C, and roasted at 650°C under air to obtain SiO 2 -P 2 o 5 -Al 2 o 3 carrier.

[0027] (2) Preparation of W-Mo-Ni-P impregnation solution

[0028] Configure 1000ml solution, weigh 125g molybdenum trioxide (industrial grade) and 60g basic nickel carbonate (industrial grade) into 600ml water, stir well, add 40g phosphoric acid (85%), boil for 2 hours, add 200g nickel nitrate, continue Boil for 15 minutes, cool to room temperature, add 410g of ammonium metatungstate, after all dissolved, add dilute ammonia water to adjust the pH value of the solution to 4.0. Transfer the solution to a volumetric flask, add water to make the volume to 1000ml, and obt...

Embodiment 2

[0032] (1) SiO 2 -P 2 o 5 -Al 2 o 3 Preparation of vector

[0033] Take by weighing 1000g pseudo-boehmite, 30g Tianqing powder, 30g citric acid, 100g silica sol (SiO 2 Concentration: 30%), 120g polyol phosphate ester, 750ml of 3-5% dilute nitric acid are mixed evenly, extruded with extruder, dried at 110°C, and roasted at 650°C under air to obtain SiO 2 -P 2 o 5 -Al 2 o 3 carrier.

[0034] (2) Preparation of W-Mo-Ni-P impregnation solution

[0035] With embodiment 1 (2).

[0036] (3) Preparation of W-Mo-Ni catalyst

[0037] With embodiment 1 (3).

Embodiment 3

[0039] (1) SiO 2 -P 2 o 5 -Al 2 o 3 Preparation of vector

[0040] Take by weighing 1000g pseudo-boehmite, 30g Tianqing powder, 30g citric acid, 100g silica sol (SiO 2 Concentration: 30%), 140g of polyol phosphate, 730ml of 3-5% dilute nitric acid are mixed evenly, extruded with extruder, dried at 110°C, and roasted at 650°C under air to obtain SiO 2 -P 2 o 5 -Al 2 o 3 carrier.

[0041] (2) Preparation of W-Ni catalyst.

[0042] Weigh 500gSiO2 2 -P 2 o 5 -Al 2 o 3 Carrier, with a certain amount of ammonium metatungstate and nickel nitrate aqueous solution (WO 3 Concentration of 70g / 100ml; NiO concentration of 20g / 100ml) saturated spray soaking for 1 hour, drying at 110°C, and then roasting at 450°C to obtain the catalyst.

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Abstract

The invention relates to a method for preparing a petroleum wax hydrofining catalyst. The method comprises the following steps of: weighing boehmite, adding a silicon-containing compound in an amount which is 6 to 17 percent based on the weight of the boehmite and phosphorus-containing organic compound solution in an amount which is 2 to 20 percent based on the weight of the boehmite, and extruding and forming on an extruder; drying at the temperature of between 100 and 120 DEG C; baking at the temperature of between 500 and 700 DEG C to obtain a gamma-Al2O3 carrier containing silicon and phosphorus, wherein the silicon-containing compound is silica solution of which SiO2 accounts for 30 percent based on the weight of the silica solution, or nano-silica; the active ingredients are one or two of NiO and Moo3, and WO3; NiO accounts for 2 to 7 percent based on the total mass of the catalyst, and MoO3 and / or WO3 account for 28 to 32 percent based on the total mass of the catalyst; the prepared catalyst has intensively distributed pores and appropriate surface acidity and still has high hydrogenation activity at a low reaction temperature and under a low reaction pressure.

Description

technical field [0001] The invention relates to a preparation method of a catalyst for hydrorefining petroleum wax, belonging to the technical field of catalysts. Background technique [0002] Petroleum wax is an important petroleum product and an important raw material for medicine, daily chemical industry and other fine chemical industries. The main method of wax refining is to use hydrorefining method, the purpose is to retain the basic composition of normal alkanes, remove carcinogens such as polycyclic aromatic hydrocarbons represented by 3,4-benzopyrene and non-hydrocarbon sulfur, nitrogen and oxygen. [0003] The paraffin hydrofining process is a highly selective reaction process. While removing impurities such as sulfur, nitrogen and oxygen in the raw material and hydrogenating unsaturated components such as polycyclic aromatic hydrocarbons, cracking reactions are not allowed to occur, otherwise it will Lead to an increase in wax oil content and needle penetration....

Claims

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Application Information

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IPC IPC(8): B01J27/19B01J27/188B01J32/00B01J37/00C10G73/44
Inventor 张志华王刚徐伟池田然于春梅孙发民蒲延芳郭金涛冯秀芳李淑杰吴显军方磊夏恩冬李凤铉刘莉李海岩朱金玲
Owner PETROCHINA CO LTD
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