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Method for hydrorefining petroleum wax

A technology of hydrogenation refining and petroleum wax, which is applied in the direction of petroleum wax refining, etc., can solve the problems of unsatisfactory refining effect, achieve good hydrogenation activity and simple preparation process

Active Publication Date: 2014-06-04
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing wax hydrorefining catalysts have unsatisfactory refining effect when dealing with raw materials containing macromolecular organic compounds, especially metal organic compounds

Method used

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  • Method for hydrorefining petroleum wax

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1)Al 2 o 3 Preparation of vector

[0023] (a) Macroporous Al with weak surface acidity 2 o 3 preparation of

[0024] Weigh 500g of pseudo-boehmite powder, 15g of Tianqing powder, 15g of citric acid, 50g of fatty alcohol ether phosphate, 350ml of dilute nitric acid of 3wt.% to 5wt.%, knead evenly, dry at 110°C, and roast at 750°C under air Processing, cooling and grinding into >150 mesh powder for later use.

[0025] (b) Weigh 1000g of pseudo-boehmite powder, add the macroporous Al prepared by (a) 2 o 3 300g, 30g Tianqing powder, 30g citric acid, 100g silica sol (SiO 2 concentration of 30wt.%), 700ml of dilute nitric acid of 3wt.%~5wt.%, kneaded evenly, extruded with extruder, dried at 110°C, and roasted at 600°C under air to obtain Al 2 o 3 carrier.

[0026] (2) Preparation of W-Mo-Ni-P impregnation solution

[0027] Configure 1000ml solution, weigh 125g molybdenum trioxide (industrial grade) and 60g basic nickel carbonate (industrial grade) and join in 600m...

Embodiment 2

[0031] (1)Al 2 o 3 Preparation of vector

[0032] (a) Macroporous Al with weak surface acidity 2 o 3 preparation of

[0033] Weigh 500g of pseudo-boehmite powder, 15g of Tianqing powder, 15g of citric acid, 60g of polyol phosphate, 350ml of dilute nitric acid of 3wt.% to 5wt.%, knead evenly, dry at 110°C, and roast at 800°C under air , cooled and ground into >150 mesh powder for later use.

[0034] (b) Weigh 1000g of pseudo-boehmite powder, add the macroporous Al prepared by (a) 2 o 3 350g, 30g Tianqing powder, 30g citric acid, 110g silica sol (SiO 2 concentration of 30%), 730ml of dilute nitric acid of 3% to 5%, kneaded evenly, extruded with extruder, dried at 110°C, and roasted at 600°C under air to obtain Al 2 o 3 carrier.

[0035] (2) Preparation of W-Mo-Ni-P impregnation solution

[0036] With embodiment 1 (2).

[0037] (3) Preparation of W-Mo-Ni catalyst

[0038] Weigh 500g Al2 o 3 For the carrier, measure 360ml of the solution prepared in step (2), impregn...

Embodiment 3

[0040] (1)Al 2 o 3 Preparation of vector

[0041] With embodiment 1 (1).

[0042] (2) Preparation of W-Ni catalyst.

[0043] Weigh 500g Al 2 o 3 Carrier, measure the aqueous solution of 375ml ammonium metatungstate and nickel nitrate (wherein WO 3 The concentration is 70g / 100ml; the concentration of NiO is 20g / 100ml) equal volume impregnation for 30min, drying at 110°C, and then roasting at 460°C to obtain the catalyst.

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Abstract

The invention relates to a method for hydrorefining petroleum wax. According to the invention, alumina is used as a carrier of a hydrorefining catalyst, and an active component in the catalyst is one or two selected from the group consisting of NiO, MoO3 and WO3, wherein, the content of NiO accounts for 2 to 7% of the total weight of the catalyst, and the content of MoO3 and / or WO3 accounts for 20 to 32% of the total weight of the catalyst; the content of SiO2 accounts for 1 to 9% of the total weight of the catalyst, and the content of P2O5 accounts for 1 to 7% of the total weight of the catalyst; the catalyst has a specific surface area of 120 m<2> / g to 190 m<2> / g, a pore volume of 0.30 ml / g to 0.55 ml / g, pores with a pore diameter of 5 nm to 14 nm account for 40 to 70% of the whole pore volume, and pores with a pore diameter of 20 nm to 40 nm account for 20 to 40% of the whole pore volume; the alumina carrier has a double-peak pore structure, the pore wall of a macroporous tunnel has weak surface acidity, and pore wall of a microporous tunnel has strong surface acidity.

Description

technical field [0001] The invention relates to a method for hydrofinishing petroleum wax. Background technique [0002] Paraffin wax and microcrystalline wax are important petroleum products and important raw materials for medicine, daily chemical industry and other fine chemical industries. Paraffin raw materials usually contain a small amount of harmful substances, such as certain aromatic compounds harmful to the human body and certain colored and unstable components. At present, the main method of wax refining is to use hydrorefining method to remove the colored, unstable and harmful substances contained in the raw materials through hydrogenation. [0003] The raw materials for paraffin wax and microcrystalline wax hydrorefining come from vacuum distillate oil or deasphalted oil, which will contain a small amount of macromolecular organic compounds, especially some metal organic compounds. For general hydrogenation catalysts, due to the limitation of pore size, these ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/19C10G73/44
Inventor 张志华徐伟池赵忠武郭金涛田然于春梅孙发民张文成王刚冯秀芳邴淑秋丛丽茹李淑杰方磊李宝强
Owner PETROCHINA CO LTD
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