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Desulfurization catalyst and preparation method thereof, and hydrocarbon oil desulfurization method

A desulfurization catalyst and binder technology, used in chemical instruments and methods, physical/chemical process catalysts, hydrocarbon oil treatment, etc., can solve problems such as poor desulfurization activity and stability, improve service life and reduce octane number loss. , The effect of good wear resistance

Pending Publication Date: 2020-05-08
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] The purpose of the present invention is to overcome the problems of poor desulfurization activity and stability in the prior art, and to provide a desulfurization activity, high stability, long service life, reduced octane number loss in oil products, and good wear resistance. Desulfurization catalyst, its preparation method and method for hydrocarbon oil desulfurization

Method used

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  • Desulfurization catalyst and preparation method thereof, and hydrocarbon oil desulfurization method
  • Desulfurization catalyst and preparation method thereof, and hydrocarbon oil desulfurization method
  • Desulfurization catalyst and preparation method thereof, and hydrocarbon oil desulfurization method

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preparation example Construction

[0044] The present invention also provides a method for preparing a desulfurization catalyst. The method includes: (1) subjecting a mixed solution obtained by mixing a silver-containing compound, a zinc-containing compound, and water to a precipitation reaction, and filtering, drying and filtering the mixture obtained by the precipitation reaction. Calcining to obtain a precipitated product; (2) contacting a silicon oxide source, a non-aluminum binder, water and an acid solution to form a slurry, and mixing the precipitated product obtained in step (1) with the slurry to form a carrier mixture; The carrier mixture is shaped, dried and calcined to form a carrier; (3) a compound containing an active metal is introduced into the carrier obtained in step (2), dried and calcined to obtain a desulfurization catalyst precursor; the active metal is cobalt and nickel At least one of iron and manganese; (4) reducing the desulfurization catalyst precursor obtained in step (3) under a hydro...

Embodiment 1

[0082] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0083] (1) Prepare precipitation product. Mix 10.9 kilograms of zinc acetate dihydrate powder (produced by Beijing Chemical Plant, analytically pure), 0.72 kilograms of anhydrous silver acetate (Sinopharm Chemical Reagent Company, analytically pure), and 18 kilograms of deionized water. After stirring for 30 minutes, they are completely dissolved. The precipitated product obtained by adding 1.8 kg of ammonia water was filtered and dried at 150°C for 2 hours, and then calcined at 500°C for 1 hour to obtain the precipitated product C1.

[0084] The precipitated product C1 was subjected to fluorescence analysis and XRD measurement. XRD spectrum (see figure 1 ) No Ag 2 The diffraction peak of O, and the standard diffraction peak of ZnO shifted to the right, where A 100 -B 100 = 0.31°, A 002 -B 002 = 0.32°, A 101 -B 101 =0.31°, indicating that Ag in the precipita...

Embodiment 2

[0093] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0094] (1) Prepare precipitation product. Mix 14.0 kg of zinc nitrate hexahydrate (produced by Beijing Chemical Plant, analytically pure), 1.76 kg of silver nitrate powder (Sinopharm Chemical Reagent Company, analytically pure) and 18 kg of deionized water, stir for 30 minutes, add 2.0 kg of urea and heat to A white precipitate was obtained after treatment at 80°C for 2 hours. After filtration, it was dried at 150°C for 2 hours, and then calcined at 500°C for 1 hour to obtain precipitated product C2.

[0095] The precipitation product C2 was subjected to fluorescence analysis and XRD measurement. XRD spectrum (see figure 1 ) No Ag 2 The diffraction peak of O, and the standard diffraction peak of ZnO shifted to the right, where A 100 -B 100 = 0.37°, A 002 -B 002 = 0.35°, A 101 -B 101 = 0.35°, indicating that Ag in the precipitation product C2 2 O and ZnO all ...

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Abstract

The invention discloses a desulfurization catalyst and a preparation method thereof, and a hydrocarbon oil desulfurization method. Based on the total weight of the desulfurization catalyst, the desulfurization catalyst contains 5-35 wt% of a silicon oxide source, 5-35 wt% of a non-aluminum binder, 30-70 wt% of zinc oxide, 2-15 wt% of silver oxide and 5-30 wt% of an active metal, wherein at least part of the silver oxide exists in a form of forming a zinc-silver composite metal oxide represented by a general formula AgxZn1-xO with the zinc oxide, x is greater than 0 and less than or equal to 0.24, x represents an atomic molar ratio, the active metal is at least one selected from cobalt, nickel, iron and manganese, and the sulfur capacity of the zinc-silver composite metal oxide representedby AgxZn1-xO is greater than or equal to 30%. The desulfurization catalyst prepared by adopting the ratio has the characteristics of high desulfurization activity, high stability, long service life and good wear resistance.

Description

Technical field [0001] The present invention relates to a desulfurization catalyst for hydrocarbon oil, in particular to a desulfurization catalyst, a preparation method thereof, and a method for desulfurization of hydrocarbon oil. Background technique [0002] The sulfur in the exhaust gas of automobile engines can inhibit the precious metals in the catalytic converter and cause it to be irreversibly poisoned, reducing the purification effect of the catalytic converter on automobile exhaust gas. The unpurified car exhaust contains unburned non-methane hydrocarbons, nitrogen oxides and carbon monoxide, which can easily form photochemical smog under photocatalysis. [0003] Most of the sulfur in gasoline products in my country comes from thermal processing gasoline blending components (such as catalytic cracking gasoline), so the reduction of sulfur content in thermal processing gasoline helps reduce the sulfur content of gasoline products. my country's current gasoline product sta...

Claims

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Application Information

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IPC IPC(8): B01J23/89C10G45/06
CPCB01J23/8966B01J23/8953C10G45/06C10G2300/1037C10G2300/104C10G2300/1044C10G2300/202C10G2300/70C10G2400/02
Inventor 林伟宋烨王磊田辉平刘俊
Owner CHINA PETROLEUM & CHEM CORP
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