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Desulfurization catalyst, preparation method thereof and hydrocarbon oil desulfurizing method

A technology for desulfurization catalysts and oxides, which is applied in the direction of refined hydrocarbon oil, molecular sieve catalysts, chemical instruments and methods, and can solve the problems of reduced activity of adsorbents, etc.

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

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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

[0043] The present invention also provides a method for preparing a desulfurization catalyst, the method comprising: (1) subjecting a mixed solution obtained by mixing a lead-containing compound, a zinc-containing compound and water to a precipitation reaction, and filtering, drying, and roasting to obtain a precipitated product; (2) contacting a silicon oxide source, a non-aluminum oxide precursor, a molecular sieve with a BEA structure and / or a molecular sieve with a FAU structure, water and an acid solution to form a slurry, and the step (1) obtains The precipitated product is mixed with the slurry to form a carrier mixture; then 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) and dried and calcined to obtain a desulfurization catalyst precursor; the active metal is at least one of cobalt, nickel, iron and manganese; (4) reducing the desulfurization catalyst pre...

Embodiment 1

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

[0085] (1) Preparation of the precipitated product. Mix 10.9 kg of zinc acetate dihydrate powder (produced by Beijing Chemical Factory, analytical grade), 0.86 kg of lead acetate trihydrate (Sinopharm Chemical Reagent Co., Ltd., analytical grade) and 18 kg of deionized water, stir for 30 minutes and dissolve completely. 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.

[0086] The precipitated product C1 was subjected to fluorescence analysis and XRD measurement. XRD spectrum (see figure 1 ) has no diffraction peaks of PbO, and the standard diffraction peaks of ZnO appear to shift 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 precipita...

Embodiment 2

[0095] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0096] (1) Preparation of the precipitated product. Mix 14.0 kg of zinc nitrate hexahydrate (produced by Beijing Chemical Factory, analytically pure), 1.80 kg of lead nitrate powder (Sinopharm Chemical Reagent Co., Ltd., 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 first dried at 150°C for 2 hours, and then calcined at 500°C for 1 hour to obtain a precipitated product C2.

[0097] The precipitated product C2 was subjected to fluorescence analysis and XRD measurement. XRD spectrum (see figure 1 ) has no diffraction peaks of PbO, and the standard diffraction peaks of ZnO appear to shift 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 t...

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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: 5-30% of a silicon oxide source, 5-30% of a non-aluminum oxide, 30-70% of zinc oxide, 2-15% of lead oxide, 1-20% of a molecular sieve having a BEA structure and / or a molecular sieve having an FAU structure, 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 non-aluminum oxide is at least one of zirconium dioxide, titanium dioxide and stannic dioxide. 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 desulfurization catalyst, a preparation method thereof, and a method for desulfurization of hydrocarbon oil, in particular, to a desulfurization catalyst, a preparation method of a desulfurization catalyst, a desulfurization catalyst obtained by the method, and a desulfurization catalyst in the desulfurization of hydrocarbon oil. method applied in. Background technique [0002] With increasing emphasis on environmental protection, environmental regulations are becoming more stringent, 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 can affect the performance of automotive catalytic converters adversely affect. The sulfur present in the exhaust gas of the automobile engine will inhibit the precious metals in the converter and cause it to be irreversibly poisoned, reducing the effect of the converter on the puri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/76B01J29/14C10G45/12
Inventor 林伟田辉平王鹏王磊徐志成
Owner CHINA PETROLEUM & CHEM CORP
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