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

A technology of desulfurization catalyst and lead oxide, which is applied in the direction of refined hydrocarbon oil, molecular sieve catalyst, chemical instruments and methods, etc., and can solve the problems such as the decrease of 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 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

[0045] 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 the pillared clay, alumina source, phospho-aluminum molecular sieve, 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; 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 cobalt , At least one of nickel, iron and manganese; (4) reducing the desulfurization catalyst precursor obtained in...

Embodiment 1

[0085] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0086] (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. Stir for 30 minutes and then completely dissolve. 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.

[0087] 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 precipitation pr...

Embodiment 2

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

[0096] (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, 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.

[0097] 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 C2 all form a ...

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Abstract

The present invention discloses a desulfurization catalyst, which contains, by weight, 5-30% of pillared clay, 5-30% of alumina, 30-70% of zinc oxide, 2-15% of lead oxide, 1-20% of a phosphorus-aluminum molecular sieve, and 5-30% of an active metal, wherein at least part of the lead oxide exists in the form for forming the zinc lead solid solution represented by a general formula PbxZn1-xO with the zinc oxide, x is more than 0 and is less than or equal to 0.12, x represents an atomic molar ratio, and the active metal is at least one selected from cobalt, nickel, iron and manganese. The present invention further provides a desulfurization catalyst preparation method and a hydrocarbon oil desulfurization method. The desulfurization catalyst of the present invention has good desulfurization activity and good 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 Applications(China)
IPC IPC(8): B01J29/85C10G45/12
Inventor 龙军田辉平林伟
Owner CHINA PETROLEUM & CHEM CORP
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