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Paraffin hydrofining catalyst and preparation method thereof

A hydrorefining and catalyst technology, applied in petroleum wax refining, catalyst activation/preparation, molecular sieve catalysts, etc., can solve the problems of not improving the dispersion of active metal nickel, not reducing the distribution of active metals, and low utilization of active metals. Achieve the effects of weakening 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

[0040] (1) Weigh 500g of pseudo-boehmite and 30g of montmorillonite, mix well;

[0041] (2) Weigh 5g hydrogen-type Y-type molecular sieve (SiO 2 / Al 2 o 3 The molar ratio is 4.7), added to 400g deionized water, mixed and beaten;

[0042] (3) Add the slurry obtained in step (2) to the mixture obtained in step (1), add 10g of turnip powder, 20g of methylcellulose, 15g of acetic acid, add an appropriate amount of deionized water, and knead at room temperature to form. After forming, dry at 120°C for 4 hours, and bake at 600°C for 4 hours. The specific surface area of ​​the carrier after calcination is 365 m 2 / g, the pore volume is 0.90 mL / g, and the average pore diameter is 12nm;

[0043] (4) Weigh 100 g of the catalyst carrier prepared in step (3), spray and soak it with 100 ml of Span-80 ethanol solution with a concentration of 0.3 g / 100 mL, and then dry it in vacuum at 60 ° C for 5 hours;

[0044] (5) Dissolve ammonium molybdate, nickel nitrate and phosphoric acid in wa...

Embodiment 2

[0047] Others are the same as in Example 1, except that in step (1), 50 g of montmorillonite is weighed and mixed with pseudo-boehmite to obtain paraffin hydrotreating catalyst B.

Embodiment 3

[0049] Others are the same as in Example 1, except that in step (2), 10 g of hydrogen-type Y-type molecular sieves are weighed and added to 400 g of deionized water, mixed and beaten to obtain paraffin hydrorefining catalyst C.

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Abstract

The invention discloses a paraffin hydrofining catalyst and a preparation method thereof. A carrier of the paraffin hydrofining catalyst comprises aluminum oxide, layered clay and a Y-type molecular sieve; nickel and molybdenum are taken as active metal components; taking the mass of the paraffin hydrofining catalyst as a reference, the paraffin hydrofining catalyst comprises 2.0%-35.0% of molybdenum oxide, and 0.5%-20.0% of nickel oxide; the dispersity of the active metal components is as follows: IMo / IAl is 0.15-0.30, 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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IPC IPC(8): B01J29/16B01J35/10B01J37/02B01J37/08C10G73/44
CPCB01J29/166B01J37/0201B01J37/082C10G73/44B01J35/615B01J35/638B01J35/635B01J35/647
Inventor 袁胜华刘文洁张皓段日张艳侠
Owner CHINA PETROLEUM & CHEM CORP
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