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Hydrorefining catalyst and preparation method thereof

A technology for hydrorefining and catalyst, which is applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., and can solve the problems of low activity and short service life of catalysts

Active Publication Date: 2017-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Aiming at the disadvantages of low activity of hydrofinishing catalysts or short service life of catalysts in the prior art, the present invention provides a new hydrofinishing catalyst, a preparation method of hydrofining catalyst and a hydrofining catalyst prepared by the method, The catalyst prepared by this method not only has significantly improved activity, but also significantly improved the service life of the catalyst

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  • Hydrorefining catalyst and preparation method thereof
  • Hydrorefining catalyst and preparation method thereof
  • Hydrorefining catalyst and preparation method thereof

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preparation example Construction

[0037] The present invention also provides a kind of preparation method of hydrorefining catalyst, and this preparation method comprises the following steps:

[0038] (1) impregnating the γ-alumina carrier in a mixture containing urea, a water-soluble salt of metal component C and water, and obtaining a modified alumina carrier through heat treatment, filtration, washing and drying;

[0039] (2) introducing metal component A and metal component B to the modified alumina carrier obtained in step (1), wherein,

[0040] Metal component A is at least one of the metal elements selected from Group VIII, metal component B is at least one of the metal elements selected from Group VIB, and metal component C is at least one of the divalent metal elements One, and metal component C is different from both metal component A and metal component B.

[0041] According to the present invention, in the mixture, the concentration of the water-soluble salt of metal component C is preferably 0.05...

Embodiment 1

[0080] (1) 75.0g of γ-Al 2 o 3 The carrier was immersed in a solution of 250.0g deionized water, 9.0g urea, 4.0g ammonium nitrate and 14.6g cobalt nitrate hexahydrate, heat treated at 85°C for 18 hours, filtered, washed and then dried at 120°C for 3 hours to obtain Co modified The alumina support, the SEM image of the Co-modified alumina support is as follows figure 1 shown. From figure 1 It can be seen that the surface of the alumina carrier has a large number of network structures, and the network density is listed in Table 1.

[0081] (2) Prepare 48 mL of a solution containing 12.5 g of molybdenum trioxide and 4.1 g of phosphoric acid, impregnate the Co-modified alumina carrier obtained in step (1) for 1 hour, dry at 120° C. for 4 hours, and then Immerse in 40mL of an aqueous solution containing 27.3g of ammonium metatungstate for 1 hour, dry at 120°C for 4 hours, and bake at 450°C for 3 hours in an air flow of 100mL / min. After cooling down to room temperature, continue...

Embodiment 2

[0092] (1) 75.0g of γ-Al 2 o 3 The carrier was soaked in a solution of 250.0g deionized water, 13.5g urea, 2.4g ammonium chloride and 7.3g cobalt nitrate hexahydrate, heat treated at 70°C for 24 hours, filtered, washed and then dried at 150°C for 2 hours to obtain Co modified permanent alumina carrier;

[0093] (2) Immerse the Co-modified alumina carrier obtained in step (1) in 48 mL of aqueous solution containing 10.3 g of phosphoric acid for 1 hour, then dry at 120° C. for 4 hours, and roast at 450° C. for 3 hours in an air stream of 100 mL / min. After reaching room temperature, immerse in 45mL aqueous solution containing 15.3g ammonium paramolybdate, 27.3g ammonium metatungstate, 24.2g nickel nitrate hexahydrate and 42.6g citric acid for 1 hour, and dry at 150°C for 4 hours to obtain catalyst S-2 . Catalyst S-2 grid density and composition are listed in Table 1.

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Abstract

The invention relates to a hydrorefining catalyst and a preparation method thereof. The method comprises: (1) soaking a gamma-alumina carrier in a mixture containing urea, water-soluble salt of a metal component C and water, and performing heat treatment, filtering, washing and drying to obtain a modified alumina carrier; and (2) introducing a metal component A and a metal component B to the modified alumina carrier obtained from the step (1). The metal component A is selected from at least one of group VIII metal elements, the metal component B is selected from at least one of group VIB metal elements, and the metal component C is at least one of divalent metal elements and is different from the metal component A and the metal component B. The surface of the catalyst has a network structure with the grid density being 0.5-50 grids per square micrometer. The hydrorefining catalyst is obviously improved in activity and prolonged in service life.

Description

technical field [0001] The invention relates to a hydrorefining catalyst, a preparation method of the hydrorefining catalyst and a hydrorefining catalyst prepared by the method. Background technique [0002] Hydrogenation technology is the most important means of producing clean oil products, among which efficient hydrogenation catalyst is the core technology of hydrogenation technology. The main active component is VIB group metal W or Mo, the VIII group metal Ni or Co is the auxiliary active component, and γ-A1 2 o 3 or modified γ-A1 2 o 3 The supported catalyst is a hydrogenation catalyst widely used in industry at present. γ-A1 2 o 3 Because of its suitable mechanical strength, acidity and pore structure, using it as a carrier or modifying it has been widely used in the preparation of hydrorefining and hydrocracking catalysts. [0003] Generally speaking, for the desulfurization-based reaction process, the hydrogenation active metal component of the catalyst is pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/888B01J35/10C10G45/08
Inventor 韩伟龙湘云李明丰杨清河聂红李大东
Owner CHINA PETROLEUM & CHEM CORP
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