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Hydrofining catalyst and preparation method thereof

A technology for hydrorefining and catalyst, applied in chemical instruments and methods, chemical elements of heterogeneous catalysts, catalysts for physical/chemical processes, etc., can solve the problems of low activity and low acid content, and achieve high hydrogenation activity, pore The effect of increasing volume and improving dispersion

Active Publication Date: 2021-06-18
山西腾茂科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The object of the present invention is to provide a hydrogenation refining catalyst and its preparation method in order to overcome the defects of the existing hydrogenation catalysts with low carrier acid content and low desulfurization and denitrogenation activities

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  • Hydrofining catalyst and preparation method thereof
  • Hydrofining catalyst and preparation method thereof
  • Hydrofining catalyst and preparation method thereof

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preparation example Construction

[0019] A first aspect of the present invention provides a method for preparing a hydrorefining catalyst, comprising the following steps:

[0020] (1) uniformly mixing the zirconium-containing compound and water, adjusting the pH value of the resulting slurry to 5-10, then stirring at room temperature -90°C for 0.5-12 hours, filtering, drying and roasting to obtain zirconia;

[0021] (2) uniformly mix the compound containing the active element, the zirconia and water, and adjust the pH value of the obtained mixture to 5-10, then stir at room temperature -90°C for 0.5-12 hours, filter and dry, and calcining at 550-800°C for 2-5 hours to obtain a composite zirconia carrier; wherein, the co-active element is selected from one or more of RE, Mg, and Ca;

[0022] (3) impregnating the composite zirconia carrier with an active metal in an organic solvent;

[0023] (4) Calcining the product obtained in step (3) under an inert atmosphere, the calcining temperature is 300-700° C., and t...

Embodiment 1

[0042] Get 1465g zirconium oxychloride ZrOCl 2 ·8H 2 After beating with O and 2269g of deionized water, the pH of the mixture was adjusted to 7.0 with dilute ammonia water, stirred at room temperature for 3.0 hours, filtered, dried at 120°C for 12 hours, and calcined at 700°C for 3 hours to obtain zirconia.

[0043] Take 737g of zirconia (calculated on a dry basis), 240mL of rare earth chloride solution (250g / L of rare earth oxide content), and 2800g of deionized water, adjust the pH of the mixture to 5.5 with dilute ammonia water, and stir and age at 30°C for 2 hours , dried at 120° C. for 12 hours after filtration, and calcined at 750° C. for 2 hours to obtain a composite zirconia carrier. The weight ratio of zirconia: rare earth oxide: water is 1:0.08:3.80.

[0044] 339g ferric chloride, 272g ammonium molybdate are dissolved in 800g ethanol (purity 99.9%) and make soaking liquid, gained soaking liquid and above-mentioned composite zirconia carrier (with respect to composi...

Embodiment 2

[0046] After taking 1250g of zirconium isopropoxide and 1100g of deionized water for beating, adjust the pH value of the mixture to 5.5 with dilute ammonia water, stir at 40°C for 3.0 hours, filter and dry it at 120°C for 12 hours, and roast at 600°C for 5 hours. to obtain zirconia.

[0047] Mix 618g of zirconia (calculated on a dry basis), 203g of magnesium chloride, and 2000g of deionized water, adjust the pH of the mixture to 7.5 with dilute ammonia water, stir and age at 40°C for 1 hour, filter and dry it at 120°C for 12 hours , calcined at 650°C for 3 hours to obtain a composite zirconia carrier. The weight ratio of zirconia:magnesia:water is 1:0.14:3.24.

[0048] 280g cobalt nitrate Co(NO 3 ) 2 ·6H 2 0.160g ammonium metatungstate is dissolved in 900g ethanol (purity 99.9%) and makes impregnating liquid, gained impregnating liquid and above-mentioned composite zirconia carrier (with respect to composite zirconia carrier, the consumption of cobalt oxide is 8wt%, the am...

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Abstract

The invention relates to the field of hydrogenation catalysts. The invention discloses a hydrofining catalyst and a preparation method thereof. The method comprises the following steps: (1) uniformly mixing a zirconium-containing compound and water, adjusting the pH value of the obtained slurry to be 5-10, then conducting stirring at room temperature to 90 DEG C for 0.5-12 hours, and conducting filtering, drying and roasting to obtain zirconium oxide; (2) uniformly mixing a compound containing an auxiliary active element, zirconium oxide and water, adjusting the pH value of the obtained mixture to be 5-10, conducting stirring at a temperature ranging from room temperature to 90 DEG C for 0.5-12 hours, conducting filtering and drying, and conducting roasting at 550-800 DEG C for 2-5 hours to obtain a composite zirconium oxide carrier, wherein the auxiliary active element is selected from at least one of RE, Mg and Ca; (3) dipping the composite zirconium oxide carrier in an organic solvent for loading an active metal, and conducting drying; and (4) roasting the product obtained in the step (3) for 0.5-5 hours at 300-700 DEG C in an inert atmosphere to obtain the hydrofining catalyst. The physical and chemical properties of the carrier can be effectively improved, and the dispersity of active metal on the surface of the catalyst is remarkably improved.

Description

technical field [0001] The invention relates to the field of hydrogenation catalysts, in particular to a method for preparing a hydrogenation refining catalyst and the prepared hydrogenation catalyst. Background technique [0002] With the increasingly stringent environmental protection regulations, the new diesel standard puts forward stricter requirements on the sulfur mass fraction, aromatic hydrocarbon mass fraction and cetane number in diesel products. The output of catalytic cracking diesel oil accounts for about 30% of the total diesel output. Due to its low cetane number, high mass fraction of sulfur, nitrogen and colloid, the oil product has dark color and poor stability, so it cannot be directly used as diesel oil. Hydrogenation process is one of the most effective means of improving oil quality, and hydrogenation catalyst is the most important and key technology in hydrogenation process. [0003] Hydrogenation catalysts are generally composed of metals or metal o...

Claims

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Application Information

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IPC IPC(8): B01J23/887B01J23/888B01J23/882C10G45/08
CPCB01J23/8871B01J23/888C10G45/08B01J2523/00C10G2300/202C10G2300/205C10G2400/04B01J35/633B01J35/635B01J35/615B01J2523/48B01J2523/68B01J2523/842B01J2523/22B01J2523/69B01J2523/845B01J2523/23B01J2523/847Y02P20/52
Inventor 许本静柴永明
Owner 山西腾茂科技股份有限公司
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