Paraffin hydrofining catalyst and preparation method thereof

A hydrorefining and catalyst technology, which is applied in petroleum wax refining, catalyst activation/preparation, physical/chemical process catalyst, etc., can solve the problem that the dispersion of active metal nickel cannot be improved, the distribution of active metal cannot be reduced, and the utilization rate of active metal is low. and other problems, to achieve the effect of reducing capillary pressure, reducing polarity and free energy, and high utilization.

Pending Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The concentration of the mixed solution of molybdenum, nickel and phosphorus used in the preparation of this method is high, especially the mass concentration of molybdenum. In addition, this method cannot reduce the distribution of the active metal at the small pores of the catalyst and does not improve the dispersion of the active metal nickel, so that the active metal low utilization

Method used

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  • Paraffin hydrofining catalyst and preparation method thereof
  • Paraffin hydrofining catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Weigh 500g of macroporous pseudo-boehmite, add 10g of turnip powder, 20g of methyl cellulose, and 20g of acetic acid, mix well, add an appropriate amount of deionized water, and knead at room temperature to shape. After molding, dry at 120°C for 4 hours, and bake at 650°C for 4 hours. The specific surface area of ​​the carrier after calcination is 345 m 2 / g, the pore volume is 0.95 mL / g, and the average pore diameter is 14nm;

[0031] (2) Weigh 100g of the catalyst carrier prepared in step (1), spray and soak it with 100ml of Span-80 ethanol solution with a concentration of 0.5g / 100mL, and then dry it under vacuum at 60°C for 5 hours;

[0032] (3) Dissolve ammonium molybdate, nickel nitrate and phosphoric acid in water, then add sodium polymethacrylate to obtain an impregnation solution, in which the content of molybdenum oxide is 53.8 / 100mL, the content of nickel oxide is 11.7g / 100mL, and the content of phosphorus The content is 2.2g / 100mL, and the content of so...

Embodiment 2

[0034] Others are the same as in Example 1, except that the content of sodium polymethacrylate in the dipping solution prepared in step (3) is 1.2 g / 100 mL in terms of carboxylate, and the dipping time is 3 hours. Obtained paraffin hydrotreating catalyst B.

Embodiment 3

[0036] Others are the same as in Example 1, except that the Span-80 ethanol solution with a concentration of 1.0 g / 100 mL is used in step (2). A paraffin hydrorefining catalyst C was obtained.

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Abstract

The invention discloses a paraffin hydrofining catalyst and a preparation method thereof. The catalyst is prepared by taking aluminum oxide as a carrier, and nickel and molybdenum as active metal components; taking the mass amount of the catalyst as a reference, the catalyst comprises 2.0%-35.0% of molybdenum oxide, and 0.5%-20.0% of nickel oxide; and the dispersity of the active metal componentsis as follows: IMo/IAl is 0.14-0.30, and INi/IAl is 0.07-0.15. The paraffin hydrofining catalyst is high in active metal utilization rate, high in active metal dispersity and high in activity.

Description

technical field [0001] The invention relates to a paraffin hydrorefining catalyst and a preparation method thereof. Background technique [0002] Paraffin wax is mainly composed of n-alkane, which is solid at room temperature, with a relatively large average molecular weight, generally between 300 and 500, and a carbon number of C20 to C30. Hydrofining of paraffin wax is mainly that the raw material wax is mixed with a certain proportion of hydrogen gas into the reactor at a certain temperature. h 2 S, NH 3 、H 2 O and other by-products to remove impurities. Regarding paraffin hydrorefining catalysts, molybdenum is generally used as the main metal component, and tungsten is also used as the main metal component. Hydrotreating catalysts employ secondary metal components such as nickel or cobalt in addition to the primary metal component. [0003] The raw material cost of active metals in paraffin hydrorefining catalysts accounts for a relatively large proportion of catal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/19B01J37/02C10G73/44
CPCB01J27/19B01J35/1019B01J35/1042B01J35/1061B01J37/0203C10G73/44
Inventor 刘文洁袁胜华张皓张艳侠
Owner CHINA PETROLEUM & CHEM CORP
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