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A kind of desulfurization catalyst and its preparation method and the method for hydrocarbon oil desulfurization

A desulfurization catalyst, alumina technology, applied in the direction of refined hydrocarbon oil, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problem of reduced activity of adsorbents

Active Publication Date: 2016-08-24
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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  • A kind of desulfurization catalyst and its preparation method and the method for hydrocarbon oil desulfurization
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  • A kind of desulfurization catalyst and its preparation method and the method for hydrocarbon oil desulfurization

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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 lead-containing compound, a zinc-containing compound and water to a precipitation reaction, and filtering, drying, and filtering the mixture obtained by the precipitation reaction. Roasting to obtain a precipitated product; (2) contacting a silica source, an alumina source, an alkali metal compound, 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 step (1) The obtained precipitation 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) the active metal-containing compound is introduced into the carrier obtained in step (2) and dried, Roasting to obtain a desulfurization catalyst precursor; the active metal is at least one of cobalt, nickel, iron a...

Embodiment 1

[0087] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0088] (1) Prepare precipitation product. Mix 10.9 kilograms of zinc acetate dihydrate powder (produced by Beijing Chemical Plant, analytically pure), 0.86 kilograms of lead acetate trihydrate (Sinopharm Chemical Reagent Company, analytically pure), and 18 kilograms of deionized water, stirred for 30 minutes and then 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.

[0089] The precipitated product C1 was subjected to fluorescence analysis and XRD measurement. XRD spectrum (see figure 1 ) There is 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 precipitati...

Embodiment 2

[0097] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0098] (1) Prepare precipitation 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. After stirring 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.

[0099] The precipitation product C2 was subjected to fluorescence analysis and XRD measurement. XRD spectrum (see figure 1 ) There is 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 precipitation product C...

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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 aluminum oxide, 30-70% of zinc oxide, 2-15% of lead oxide, 0.5-10% of an alkali metal 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 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 invention relates to a desulfurization catalyst and a preparation method thereof and a method for desulfurizing hydrocarbon oil, in particular to a desulfurization catalyst, a preparation method of a desulfurization catalyst and a desulfurization catalyst obtained by the method, and a desulfurization catalyst for desulfurization of hydrocarbon oil Method applied in. Background technique [0002] As people pay more and more attention to environmental protection, environmental protection laws and regulations are becoming stricter. Reducing the sulfur content of gasoline and diesel is considered to be one of the most important measures to improve air quality, because the sulfur in the fuel will affect the performance of the automobile catalytic converter. Have an adverse effect. The sulfur in the exhaust gas of automobile engines can inhibit the precious metals in the converter and cause it to be irreversibly poisoned, reducing the converter's effect on t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/76B01J29/14C10G45/12
Inventor 林伟田辉平王鹏许明德郭瑶庆徐志成
Owner CHINA PETROLEUM & CHEM CORP
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