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Desulfurization catalyst, preparation method thereof and hydrocarbon oil desulfurizing method

A desulfurization catalyst, alumina technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as reduced adsorbent activity

Active Publication Date: 2015-04-15
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to provide a desulfurization catalyst and its preparation method and a method for desulfurization of hydrocarbon oil in order to overcome the problem of reduced adsorbent activity in the prior art

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

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preparation example Construction

[0044] The present invention also provides a method for preparing a desulfurization catalyst, the method comprising: (1) performing a precipitation reaction on a mixed solution obtained by mixing a lead-containing compound, a zinc-containing compound and water, and filtering, drying and Roasting to obtain a precipitated product; (2) contacting layered clay, alumina source, water and acid solution to form a slurry, and mixing the precipitated product obtained in step (1) with the slurry to form a carrier mixture; Shaping, drying and roasting the carrier mixture to form a carrier; (3) introducing a compound containing an active metal to the carrier obtained in step (2) and drying and roasting to obtain a desulfurization catalyst precursor; the active metals are cobalt, nickel, iron and at least one of manganese; (4) reducing the desulfurization catalyst precursor obtained in step (3) in an atmosphere containing hydrogen to obtain a desulfurization catalyst.

[0045] In the prepa...

Embodiment 1

[0084] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0085] (1) Prepare the precipitated product. Mix 10.9 kg of zinc acetate dihydrate powder (produced by Beijing Chemical Plant, analytically pure), 0.86 kg of lead acetate trihydrate (Sinopharm Chemical Reagent Company, analytically pure) and 18 kg of deionized water, and dissolve completely after stirring for 30 minutes. The precipitated product obtained by adding 1.8 kg of ammonia water was filtered, dried at 150° C. for 2 hours, and then calcined at 500° C. for 1 hour to obtain the precipitated product C1.

[0086] The precipitated product C1 was subjected to fluorescence analysis and XRD determination. In the XRD spectrum (see figure 1 ) has no diffraction peak of PbO, and the standard diffraction peak of ZnO shifts to the right, where A 100 -B 100 =0.2°, A 002 -B 002 =0.21°, A 101 -B 101 =0.2°, indicating that PbO and ZnO in the precipitated ...

Embodiment 2

[0094] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0095] (1) Prepare the precipitated product. Mix 14.0 kg of zinc nitrate hexahydrate (produced by Beijing Chemical Plant, analytically pure), 1.80 kg of lead 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 After treatment at 80°C for 2 hours, a white precipitate was obtained. After filtration, it was first dried at 150°C for 2 hours, and then calcined at 500°C for 1 hour to obtain the precipitated product C2.

[0096] The precipitated product C2 was subjected to fluorescence analysis and XRD determination. In the XRD spectrum (see figure 1 ) has no diffraction peak of PbO, and the standard diffraction peak of ZnO shifts to the right, where A 100 -B 100 =0.25°, A 002 -B 002 =0.24°, A 101 -B 101 =0.24°, indicating that PbO and ZnO in the precipi...

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Abstract

The invention discloses a desulfurization catalyst which includes following components, on the basis of the total weight of the desulfurization catalyst, by weight: 5-35% of pillared interlayered clay, 5-35% of aluminum oxide, 30-70% of zinc oxide, 2-15% of lead oxide and 5-30% of an active metal. At least partial lead oxide and the zinc oxide are formed into a zinc-lead solid solution with a general formula being Pb<x>Zn<1-x>O, wherein 0<x<=0.12 and the x refers to atom molar ratio. The active metal is at least one of cobalt, nickel, iron and manganese. The invention also provides a preparation method of the desulfurization catalyst and a hydrocarbon oil desulfurizing method. The desulfurization catalyst is better in desulfurization activity and activity stability.

Description

technical field [0001] The present invention relates to a kind of desulfurization catalyst and its preparation method and the method of hydrocarbon oil desulfurization, specifically, relate to a kind of desulfurization catalyst, a kind of preparation method of desulfurization catalyst and the desulfurization catalyst obtained by this method, and desulfurization catalyst in hydrocarbon oil desulfurization method applied in . Background technique [0002] As people pay more and more attention to environmental protection, environmental regulations are becoming stricter, and reducing the sulfur content of gasoline and diesel is considered to be one of the most important measures to improve air quality, because sulfur in fuel will affect the performance of automotive catalytic converters produce adverse effects. The sulfur present in the exhaust of automobile engines will inhibit the precious metals in the converter and cause irreversible poisoning, reducing the effect of the co...

Claims

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Application Information

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IPC IPC(8): B01J23/835C10G45/06
Inventor 龙军田辉平林伟
Owner CHINA PETROLEUM & CHEM CORP
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